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JVC KD-R840BT

CD receiver

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Item #: 105KDR840B
 

Review Summary

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Our take on the JVC KD-R840BT

by Ken Nail
JVC

Why replace your factory radio?

Two good reasons - sound quality and cool features. A new car stereo offers power that's superior to most factory radios, along with more sophisticated tone controls. And most car stereos offer built-in or optional features that add safety and fun to life in your car, including inputs for your iPod or MP3 player, Bluetooth connectivity for hands-free cell phone calls, satellite radio or HD Radio reception, and connections for building an audio system in your car.

For great looks and great sound

JVC's KD-R840BT CD receiver ups the ante with its 5-zone Functional Variable Color faceplate. You can adjust any of the five distinct zones on the face to your liking, for a custom look that'll match your car's interior or your sense of style. And you can even have selected zones change color with your volume adjustments.

The sound measures up to the sharp styling, with a strong internal amp and a 3-band parametric equalizer, plus high- and low-pass filters to tailor sound output to your speakers. If you're looking to build a system with external amps, three sets of high-voltage preamp outputs ensure the cleanest performance from your system. Front and rear USB inputs give you more flexibility for connecting USB devices.

JVC KD-R840BT

The 5-zone variable color display gives you plenty of customization options.

Bluetooth® equipped for safety and convenience

Bluetooth is great for talking hands-free, but that's not the only way it can enhance your car audio experience. Pair up JVC's KD-R840BT CD receiver with your smartphone, and enjoy audio streaming of Internet radio for more musical variety. And, with many Android™ phones, you can receive text message notifications too.

And here's a cool feature — let's say you've got a business phone and a personal phone. Most car stereos with Bluetooth make you choose one for use in the car, but the KD-R840BT lets you pair two phones at once. And when a call comes in, the receiver will blink either blue or red, depending on the phone. So you'll either have your business game face on, or be ready to relax and unwind when chatting with a friend.

Android™ smartphone compatibility

JVC's Smart Music Control works with Android phones to support voice commands for controlling your music. You'll be able to change songs, search your music, and more without raising a finger. But if you like to get your digits involved, you can create playlists with the Mood Blender, or even adjust EQ settings with your phone. And this app lets you use your compatible Android phone's touchscreen to control many functions using finger swipes and gestures — for example, tap the screen to play and pause, or swipe right to skip forward a track. So pop your Android phone in a mount, and you can reach down and skip a track without taking your eyes off the road.

Internet radio control

PANDORA® Internet Radio is one of the most popular streaming stations on the web. iPhone users can control PANDORA through this JVC when connected to the USB slot, while Android and Blackberry owners control Pandora through the Bluetooth connection. Either way, you'll enjoy access to your favorite stations and display of song, artist, and album information on the receiver's screen while you're listening.

Never miss your favorite radio programs

Do you have news, sports, or other radio programs you don't want to miss? The KD-R840BT's radio timer feature automatically switches on the radio and tunes in the correct station, no matter what source you're on at the time. You can set the timer to work one time or daily, so it's great for catching the shows you enjoy during your daily commute.

Want to keep your steering wheel controls?

In most vehicles, you can use an adapter (not included) to connect your vehicle's steering wheel controls to this JVC stereo. Connect a few wires, then program the adapter for your particular car and the receiver, and you'll retain the convenience of your steering wheel controls. Check the "Accessories" tab for compatible adapters.

Bluetooth note: Use of this receiver's Bluetooth features will depend upon your phone's Bluetooth capabilities. Learn more in our article explaining Bluetooth profiles.

iPod note: If you're going to use your iPod with this receiver, be sure to check "Details" for specific iPod model compatibility with this receiver or its optional iPod adapter.

See more info on this item

Highlights:

    General features:
    • CD receiver with AM/FM tuner
    • built-in MOSFET amplifier (20 watts RMS CEA-2006/50 peak x 4 channels)
    • plays CDs, CD-Rs, and CD-RW discs including discs loaded with MP3, WMA, and WAV files
    • Bluetooth for hands-free calling and audio streaming — full-time connection to two phones at once
    • built-in iPod control and USB connection to Android phones
    • control PANDORA® from your iPhone, Android, or Blackberry smartphone
    • detachable face with 5-zone variable-color illumination
    • remote control
    Audio features:
    • 24-bit digital-to-analog converter
    • high- and low-pass filters
    • 3-band parametric equalizer
    Expandability:
    • compatible with Sirius XM satellite radio tuner
    • built-in iPod control and USB connection to Android phones
    • inputs: front and rear USB inputs, front auxiliary input
    • outputs: 6-channel preamp outputs (4.8-volt front, rear, and subwoofer)
    Other features and specs:

    Hands-on research from the Crutchfield Labs (what are the Labs?)

    Features and Specs
    General
    CEA-2006 Compliant
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    Yes
    RMS Power Output
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    20 watts
    Peak Output
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    50 watts
    RMS Power Bandwidth
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    20-20kHz
    Preamp Outputs
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    6-channel
    Sub Preamp Outputs
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    Yes
    Switchable Rear Preamp Outputs
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    No
    Preamp Voltage
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    4.8 volts
    Display Color
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    Variable
    Key Button Color
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    Variable
    EQ Bands
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    3
    Wireless Remote
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    Yes
    Steering Wheel Control Compatible
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    Adapter required
    Parts Warranty
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    1 Year
    Labor Warranty
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    1 Year
    Expandability
    AUX Input
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    Front
    USB Input
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    Front/Rear
    Memory Card Slot
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    USB memory
    Bluetooth Compatible
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    Built-in
    Satellite Radio Ready
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    SiriusXM
    HD Radio
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    No
    Navigation
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    ---
    iPod Compatibility
    Full size
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    Classic/5Gen
    Nano
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    7/6/5/4/3/2/1
    Touch
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    5/4/3/2/1
    Mini
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    No
    iPhone
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    5S/5C/5/4S/4/3GS/3G/2G
    Tuner
    FM Sensitivity
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    9.3 dBf
    European Tuning
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    Yes
    Seek/Scan
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    Seek
    Radio Data System
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    Yes
    Product Research
    What's in the box?

    Download owner's manual

    • CD receiver (with 10-amp ATC fuse inserted into chassis)
    • Face (attached)
    • Sleeve (installed)
    • Trim ring (installed)
    • Wiring harness
    • Microphone with integrated bracket (attached 12' cable terminated by a right-angle male 3.5mm connector)
    • Wireless remote control (RM-RK52)
    • CR2025 3V Lithium battery (installed)
    • Face-case
    • 2 Radio removal tools
    • Face fixing screw
    • Face case
    • Instruction Manual (En/Fr/Sp)
    • US Warranty Sheet
    • Canadian Warranty Card
    • "Caution!" note (attached to wiring harness)
    • Face Fixing screw note

    Our Product Research Team

    At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team — they open the box, verify contents, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

    Built-in Bluetooth
    Disc & USB Playback
    iPod/Android/AUX Integration
    AM/FM+Pandora+SiriusXM Radio
    Audio Section
    Display Features
    Remote/Bluetooth Control

    Built-in Bluetooth

    Bluetooth Technology: The JVC KD-R840BT is equipped with built-in Bluetooth (version 2.1+EDR), allowing you to make and receive phone calls wirelessly through the receiver; as well as stream music wirelessly from your smartphone to the head unit. In order to use Bluetooth wireless technology, your phone must also be Bluetooth compatible and be able to interpret certain profiles. This unit is compatible with the following Bluetooth Profiles:

    • Hands-Free Communication: HFP 1.5 (Hands Free Profile), OPP 1.1 (Object Push Profile), PBAB 1.0 (Phone Book Access Profile).
    • Audio Streaming: A2DP 1.2 (Advanced Audio Distribution Profile), AVRCP 1.3 (Audio/Video Remote Control Profile).
    Note: Due to the differences in Bluetooth technology, some Bluetooth enabled devices may be incompatible, function improperly, or may not support all features when used with the JVC KD-R840BT. See JVC's Bluetooth compatibility chart for a complete list of compatible Bluetooth enabled devices.

    Pairing: Your Bluetooth enabled mobile phone or digital audio player must be paired with KD-R840BT before hands-free & wireless operation. You can register up to five Bluetooth enabled devices with the JVC head unit. You can keep two phones connected at all times (only one can be used during a call).

    Bluetooth Hands-Free Communication: The head unit supports Bluetooth hands-free communication for your Bluetooth enabled mobile phone. The controls of the KD-R840BT can be used to dial a number, answer an in-coming call, or end a call. The unit also includes an external microphone (with mounting bracket) featuring adjustable gain, so you can carry on your side of the conversation while listening to the caller through your vehicles speakers.

    • Answering A Call: When a call comes in, a ring-tone will be heard through your vehicle's speaker and the caller's name or phone number will be displayed. You can also set the head unit's LCD to change colors when a phone call is received. You can answer the call from the head unit's front-panel controls, or setup the head unit to automatically answer the incoming call immediately or after 3/5/10 seconds. The KD-R840BT also supports the Call Waiting function, so you can answer another incoming call while suspending the current call you are on. Your compatible cell-phone must also support this feature.
    • Dialing A Number: Using the KD-R840BT, you can dial a phone number in one of the following ways:
      • Entering a Phone Number: Allows you to directly dial a phone number up to 32 digits from the head unit's front-panel rotary dial.
      • Speed Dialing: You can store up to 6 contacts in the memory of this unit for speed dialing.
      • Phone Book: You can dial by using the downloaded phone book. You can download phone book data from your cell phone to the KD-R840BT.You can search through your contacts alphabetically (A-Z) or numerically (0-9). Up to 400 numbers can be stored for each registered cell phone.
      • Call Log: The Call Log is a list of calls that have originated from and were received by this unit that you can dial. You can select Outgoing, Incoming, or Missed calls (up to 50 each).
      • Voice Dialing: If your mobile phone supports voice recognition, then you can dial out by voice command. Simply speak into the included microphone. 
    Note: During a conversation, you can switch between the Private Mode (talking directly on your cell phone) and the Hands Free Mode.

    External Microphone: The JVC KD-R840BT includes an external microphone to carry on your side of your phone conversation and voice command dialing. The external wired microphone offers improved audio quality versus an integrated microphone, so you can be heard easier over noisy traffic and road noise. You can adjust the volume level and noise cancellation of the microphone without affecting the other sources. The external microphone features an attached 12' cable terminated by a right-angle 3.5mm connector which plugs into the mic input on the rear-panel of the head unit. The microphone offers an integrated mounting bracket which can be clipped to your vehicle's sun-visor or taped to your dash. The external microphone measures 0.525" (diameter) x 1.485" (depth).

    Note: This unit does not offer an integrated front-panel microphone.

    SMS: If your Bluetooth enabled mobile phone is compatible with SMS (Short Message Service), the JVC head unit will notify you when a message has been received. You must then use your phone to check the message. You cannot read, edit, or send a message through this unit.

    Wireless Audio Streaming (w/ Metadata Display): The JVC KD-R840BT also supports wireless audio playback (AD2P) and control (AVRCP) of a Bluetooth enabled audio player or smartphone. The KD-R840BT will be able to control basic playback functions of your Bluetooth device's stored music; such as Play/Pause, Skip Next/Previous, Fast Forward/Rewind and Random/Repeat. The head unit will also display your stored music's song information; such as Artist name and Song/Album title. The KD-R840BT also supports audio streaming of music apps downloaded on your smartphone with metadata display and limited control. Advanced music control of your music apps will still need be done via your Bluetooth-enabled smartphone. When an incoming call or outgoing call is in progress from your Bluetooth enabled mobile phone, audio streaming will be paused so you can take your call. Once the call is finished, your streaming music will resume.

    Siri Digital Assistant Control: When paired and connected with an iPhone 4S or 5/5C/5S via Bluetooth (not USB), the JVC KD-R840BT has the ability to access Siri through its front-panel control and external microphone. Simply press the "phone command" button on theKD-R840BT to engage Siri and use the included microphone to communicate with Siri. Siri's voice will heard through your vehicle's speakers. All Siri functions including hands-free calling, music search, setting reminders, text-messaging, audible navigation, and more can be done through the head unit and its microphone. The head unit will only display hands-free calling and Bluetooth audio information (all other functions of Siri are only audible through the KD-R840BT; visual data will still need to be viewed from your iPhone device).

    Note: You can ask Siri to get directions to a destination and the turn-by-turn instructions will heard through your vehicle's speakers, while the on-screen map still displays on your iPhone 4S/5/5C/5S. The head unit's audio is attenuated while Siri provides audible directions.

    Disc & USB Playback

    Disc Compatibility: The unit features a single disc player that will playback CD-Audio, CD-Text, and finalized CD-R/CD-RW audio discs. The unit also supports playback of MP3/WMA music files loaded onto CD-R/RW discs.

    Dual USB Ports: The JVC KD-R840BT features a front-panel USB 2.0 type-A port (behind a sliding cover) and rear-panel USB 2.0 type-A port (attached to rear chassis by a 38" cable) for connection and control of a portable USB mass-storage class (MSC) device; such as select Android smartphones (Froyo/Gingerbread OS only), portable digital audio players, or USB thumbdrives. The USB ports enable audio playback and control of MP3, WMA, & WAV audio files stored on portable USB mass-storage class devices. USB portable audio devices that can be charged via USB will be charged when plugged into the CD receiver's USB ports (5V/1A), and the vehicle's ignition switch is set to ACC or On.  You cannot connect a USB device via a USB hub or Multi-Card Reader to this unit.

    MP3/WMA/WAV Playback: The JVC KD-R840BT supports the following types of MP3, WMA, & WAV files recorded onto CD-R/RW disc or loaded onto a USB mass storage class device.

    Media Type CD-R/RW USB Storage Device
    File System ISO9660 Level 1 or 2, Romeo, Joliet, or Windows long file name FAT 12/16/32
    Playable File Types

     MP3: bit rate of 8-320kbps w/ sampling rate of 8, 11.025, 12, 16, 22.05, 24, 32, 44.1, 48kHz
     WMA:
    bit rate of 16-320kbps w/ sampling rate of 8-48kHz
    WAV (USB only):
    bit rate of 16-bit w/ sampling rate of 44.1, 48kHz.

    Maximum # of Folders/Files 255 folders/65,025 files (255 files per folder)
    Tags ID3 tag (version 1.0/1.1/2.2/2.3/2.4), WMA tag

    Track/Folder List: The Track/Folder List displays a list of MP3/WMA folders and tracks on a loaded CD or USB device, so you can easily access your music. The Track/Folder List will also display the list of track titles on a CD Text disc.

    Character Search: You can search for your MP3/WMA/WAV music tracks alphabetically (A-Z) or numerically (0-9).

    Random/Repeat Modes: The JVC KD-R840BT offers the following Repeat and Random playback modes.

    • Repeat: Track Repeat (plays the current track repeatedly), Folder Repeat (plays all tracks of the current folder repeatedly), Off (cancels repeat function)
    • Random: Folder Random (plays all tracks of the current folder, then the tracks of the next folder in random), All Random (plays all tracks of the current disc at random), Off (cancels random function)

    Resume: If you change the source, playback also stops (without ejecting the disc or USB device). Next time you select CD or USB for the playback source, the player will start from where it has been stopped previously.

    JVC Playlist Creator Compatible: JVC Playlist Creator is a free Windows-based desktop software that helps organize, manage and transfer MP3/WMA music files to your USB (MSC) device from your PC. When you playback audio files that have been stored on your USB (MSC) device using JVC Playlist Creator through the KD-R840BT, you can search a file by song title, album name, artist name, or genre using the head unit's Quick Search function. The JVC Playlist Creator is a Windows-based software that can be downloaded for free from JVC's website to your PC. The JVC Playlist Creator is compatible with the following Windows Microsoft Operating Systems.

    • Windows XP Professional, Home Edition SP2 or later (32-bit)
    • Windows Vista (32/64-bit)
    • Windows 7 (32/64-bit)
    Note: Not compatible with Apple iPod/iPhone/iPad, Zune, or Android.

    Off Insert/Eject: A CD disc can be inserted or ejected with the power off. When a disc is inserted with the power off, the unit will automatically power up and begin playback.

    Disc Protection: If the ejected disc is not removed within 15 seconds, the disc is automatically inserted again into the loading slot to protect it from dust. The source will change to CD, and the disc will begin playback, even if you have another source selected at the time.

    Mounting: For proper disc playback you must install the unit within 30-degrees of horizontal.

    iPod/Android/BlackBerry/AUX Integration

    iPod/iPhone Direct: The JVC KD-R840BT's front-panel or rear-panel USB port can acts as an iPod/iPhone high-speed direct connection when used with the USB/iPod cable that came with your iPod/iPhone. This USB connection allows audio playback, music navigation, information display, and charging of select iPod/iPhone models from the JVC in-dash head unit. The head unit supports audio playback from music stored on your iPod/iPhone or music apps (such as iHeartRadio, SiriusXM, Last.fm, Rhapsody, & Slacker) streamed to your iPhone (not all music apps will be compatible).

    • DAC Bypass: The USB connection allows your iPod/iPhone's stored music and music apps to be loaded instantly to the head unit and sound quality to be maximized through the head unit's 24-bit D/A converter, allowing for a Signal to Noise ratio up to 105dB. The JVC head unit supports audio playback of music, podcasts, audiobooks, and music apps stored on your iPod or iPhone.
    • Music Control: You can choose to operate your iPod/iPhone through the JVC head unit's front-panel controls, from its clickwheel/touchscreen, or via a streamed app from your iPhone.
      • Head Unit Mode: From the head unit's front-panel controls you can search for music by Playlist, Artist, Album, Song, Podcast, Genre, and Composer. You can search a Playlist or Category alphabetically (A-Z) or numerically (0-9). The KD-R840BT also supports Repeat (file/all) and Random (album/all) playback functions of your iPod/iPhone. Your iPod/iPhone's clickwheel or touchscreen remains accessible in this mode. You can also control basic playback functions (such as Play/Pause, Previous/Next Track) from select music apps streamed to your iPhone.
      • iPod Mode: You can choose to navigate your iPod or iPhone's stored music from its clickwheel or touchscreen, like you are accustomed to during normal usage. Basic playback control (such as Play/Pause, Previous/Next Track) can still be done through head unit for stored music and music apps.
      • External Mode: External Mode allows you to solely navigate your connected iPod/iPhone device through its clickwheel or touchscreen. Playback of your iPod/iPhone's stored music and streamed music apps is supported. The head unit's iPod/iPhone controls will be locked.
    • iPod Display: The KD-R840BT will display your Apple device's stored music and streamed music app song/artist information, when in Head Unit and iPod mode (not in External mode), or listening to Pandora Internet Radio. The head unit can display Track number, Elapsed playing time, Artist name, Song/Artist title, and Station identification
    • iPod Charging: The head unit's USB connection provides 1A of current to power and charge your connected iPod/iPhone when your vehicle's ignition switch is set to the 'ACC' or 'On' position. This unit does not charge the iPad. If your iPod/iPhone has no initial battery charge, then the unit will not recognize it.

    iPod Compatibility Chart: The JVC KD-R840BT is "Made for iPod/iPhone" compatible and supports the following iPod/iPhone model features (as of 9/13/2013):

    Apple Device Generation Tested Version Media Type Control Type Display Type Bluetooth Charge
    Audio Video Head Unit iPod/iPhone External mode Pandora app Artist/Song Text Track Info Phone Audio Siri
    iPhone 2G 3.1.3 Y N Y Y Y N Y Y Y N N Y
    3G 4.2.1 Y N Y Y Y N Y Y Y Y N Y
    3GS 5.1.1 Y N Y Y Y Y Y Y Y Y N Y
    4 7.0 Y N Y Y Y Y Y Y Y Y N Y
    4S 7.0 Y N Y Y Y Y Y Y Y Y Y Y
    5 7.0 Y N Y Y Y Y Y Y Y Y Y Y
    5C 7.0 Y N Y Y Y Y Y Y Y Y Y Y
    5S 7.0 Y N Y Y Y Y Y Y Y Y Y Y
    touch 1st 2.2.1 Y N Y Y Y N Y Y N N N Y
    2nd 4.2.1 Y N Y Y Y N Y Y N Y N Y
    3rd 5.1.1 Y N Y Y Y N Y Y N Y N Y
    4th 6.1.3 Y N Y Y Y N Y Y N Y N Y
    5th 7.0 Y N Y Y Y N Y Y N Y Y Y
    nano 1st 1.3.1 Y N Y N N N Y Y N N N Y
    2nd 1.1.3 Y N Y Y Y N Y Y N N N Y
    3rd 1.1.3 Y N Y Y Y N Y Y N N N Y
    4th 1.0.4 Y N Y Y Y N Y Y N N N Y
    5th 1.0.2 Y N Y Y Y N Y Y N N N Y
    6th 1.2 PC Y N Y Y Y N Y Y N N N Y
    7th 1.02 PC Y N Y Y Y N Y Y N Y N Y
    classic 80GB 1.1.2 Y N Y Y Y N Y Y N N N Y
    120GB 2.0.1 Y N Y Y Y N Y Y N N N Y
    160GB 2.0.4 Y N Y Y Y N Y Y N N N Y
    video 5th 1.3 Y N Y N N N Y Y N N N Y
    iPad 1 5.1.1 Y N Y Y Y Y Y Y N Y N N
    2 7.0 Y N Y Y Y Y Y Y N Y N N
    3 7.0 Y N Y Y Y Y Y Y N Y N N
    4 7.0 Y N Y Y Y Y Y Y N Y Y N
    mini 7.0 Y N Y Y Y Y Y Y N Y Y Y
    Note: Apple iPod/iPhone software updates may change functionality results. If you download a newer software version, you may need to reset the head unit and your iPod/iPhone to regain functionality. If this doesn't work, you may need to wait until a newer software update is available.

    JVC Music Control (for Android):  By connecting the JVC CD receiver via USB to an Android smartphone (OS 2.2+) that has the free JVC Music Control app installed, it allows you to list and search all of the songs stored inside the smartphone from the receiver by artist name or album name. The JVC Smart Music Control app also analyzes all of your songs that are in your Android smartphone, and creates a playlist according to your mood. Once the application has completed the analysis of the songs, simply move the on-screen "mood ball" to your current mood, and this application will generate a list of songs that most fits your mood. Your compatible Android smartphone must be recognized as a USB mass storage class device; not compatible with MTP protocol.

    Drive Change Mode (for BlackBerry): The receiver's USB port also supports playback from BlackBerry smartphones (via USB mass storage mode). JVC's Drive Change Mode lets you connect your BlackBerry smartphone (that uses an external memory card) directly to the head unit, via USB. Drive Change Mode will let you switch between your BlackBerry smartphone's internal and external memory (such as microSD Card), so you can listen to music stored on either memory. You'll continue to be able control basic playback functions; such as folder/file search, play/pause, and skip next/previous; regardless of memory type.

    Front-Panel Auxiliary Input: A front-panel stereo minijack is provided to allow the connection of almost any portable audio source with a 3.5mm headphone output (great for those non-Apple/Android devices. Simply connect your portable digital music player to the unit's front-panel auxiliary input, and you can listen to the audio from the portable player through the speakers in your mobile audio system. The unit's front-panel auxiliary input can be turned On or Off.

    AM/FM+Pandora+SiriusXM Radio

    RDS AM/FM Tuner: The JVC KD-R840BT features a built-in RDS AM/FM tuner with manual, seek, and preset tuning. The Radio Data System (RDS) feature displays radio broadcast information such as artist, title, and album when listening to compatible AM/FM stations. You can store a total of 18 FM stations presets and 6 AM station presets (manually or automatically).  The head unit's Radio Timer features lets you tune into a preset station at a specific time regardless of the head unit's current source (you can activate the Radio Timer once, daily, or turn it completely off). If an analog FM stereo broadcast is hard to receive, you can manually switch the tuner to Mono operation. You can also switch the tuner's IF filter to Wide or Auto to increase/decrease the sensitivity.

    Note: You can set the built-in AM/FM tuner between US standard and European tuning spacing.

    Pandora Internet Radio: Pandora is the leading Internet Radio music service in the United States, giving people music they love anytime, anywhere, through personalized radio stations. The JVC KD-R840BT CD receiver lets you playback and control the Pandora Internet Radio music service that is being streamed to your Apple iPhone or Android smartphone. Your iPhone or Android smartphone will need an active Data Plan account with connection to the Internet via 3G, EDGE, or WiFi. In addition, you will need an active Pandora music service account.

    • Smartphone Connectivity: The JVC KD-R840BT supports playback of the Pandora app via your USB-connected iPhone or Bluetooth-paired Android smartphone.
      • Pandora App for iPhone: The KD-R840BT provides complete access to your Pandora account using your iPhone, via the head unit's front- or rear-panel USB port. To access Pandora you must have an Apple iPhone (iOS5 or later) with the latest version of the Pandora App from Apple's iTunes App Store.
      • Pandora via Android: The JVC KD-R840BT lets you playback and control Pandora Internet Radio streamed from your Android smartphone, via Bluetooth (no hard-wired connection required). To access Pandora from the JVC head unit, your Bluetooth-enabled Android smartphone must have the latest version of the Pandora App from the Google Play App Store. Your Android smartphone must support A2DP, AVRCP, and SPP Bluetooth profiles.
    • Pandora Control: The JVC KD-R840BT will provide control over the Pandora music service streamed to your USB-connected iPhone or Bluetooth-enabled Android smartphone.
      • Station List: You can select Pandora stations from your Station List by date or alphabetically (A-Z).
      • Create New Station: New stations can be created based on the current songs or artists playing on Pandora.
      • Skip Songs: You can skip song tracks within a station. You cannot skip back to a previous song. Pandora limits the number of skips allowed.
      • Thumbs Up/Down: You can give songs a thumbs up or thumbs down to help Pandora personalize stations to suit your preferences.
      • Bookmarking: The song or artist currently being played can be bookmarked & stored in your Pandora account.
    • Information Display: The JVC KD-R840BT will display Artist, Album, & Song information provided by the Pandora app on your iPhone or Android smartphone.
    Note: Access to the Pandora service will depend on the availability of a cellular and/or WiFi network for purposes of allowing your iPhone or smartphone to connect to the Internet. Pandora is not supported in Canada and only available in the United States.

    SiriusXM Ready: The JVC KD-R840BT comes ready for SiriusXM programming with access to XM and Sirius Satellite Radio stations. Thanks to its proprietary SiriusXM Connect port, you can add the optional SXV200V1 SiriusXM Connect tuner and receive more than 150 channels of exclusive programming directly from SiriusXM, via the "SiriusXM All Access" package (subscription required). Visit SiriusXM.com for a complete list of subscription options and channel guide. Additional features of the SXV200 SiriusXM Connect tuner include:

    • Channel list displays a list of all available channels
    • Category Search searches for channels in a certain category
    • Displayed Information such as Channel Name, Artist Name, & Song Title can be viewed on the head unit's LCD
    • Up to 18 SiriusXM Satellite Radio station presets
    • Direct Tuning via included remote
    • Supports the SiriusXM Instant Replay function, so you can pause, rewind, and replay up to 30 minutes of live content
    • Channels containing unsuitable content for children can be blocked

    Note: A separate SiriusXM Satellite Radio subscription is required (operates on the XM Network). However, you can easily add this SiriusXM tuner to an existing Sirius or XM account for a Multi-Radio Discount Plan.

    Audio Section

    24 Bit D/A Converter: The JVC KD-R840BT utilizes a 24-bit digital to analog converter for superior sound quality.

    MOSFET Amplifier: The KD-R840BT is equipped with a MOSFET amplifier. Compared to conventional power supplies, the MOSFET amplification circuit is smaller and more efficient, and it delivers increased power with less distortion and absolutely zero on/off switching noise. More power means louder and cleaner music at higher volumes because you're not pushing the limits of the amplification circuit.

    CEA2006 Compliant: The power specifications for the KD-R840BT are compliant with the CEA2006 Mobile Amplifier Power Testing and Measurement standards from the Consumer Electronics Association (CEA). These standards were developed as a way to equitably compare power specs from model to model and between manufacturers. The power output specs for the KD-R840BT are as follows:

    • CEA2006 Specs: 20 watts RMS x 4 channels (at 4 ohms, 20Hz-20kHz, 1% THD-N)
    • Maximum Power Output: 50 watts x 4 channels (200 total watts)

    Amplifier Gain Control: When you are using the KD-R840BT with factory speakers (or those rated to less than 50 watts peak), the Amplifier Gain Control can limit the amount of power being sent to those speakers. When the Amp Gain Control is set to "low," the volume control ranges from 0 (minimum) to 30 (maximum). When using speakers rated higher than 50 watts peak, you can set the Amp Gain Control to "high," and the volume control will range from 0 to 50.

    6ch/4V Preamp Outputs: The KD-R840BT is equipped with 6ch/4.8V preamp outputs (Front, Rear, Subwoofer). The front and rear preamp outputs allow fader control, while the subwoofer preamp output is non-fading.

    Subwoofer Controls: The head unit's sub preamp output features a low pass crossover and independent volume control. You can set the cutoff frequency of the low-pass filter at 55Hz, 85Hz, or 120Hz. You can adjust the head unit's subwoofer level between -8 and +8 (separate from the main volume level).

    High-Pass Filter (for Front & Rear Speakers): You can activate a variable high-pass filter (100, 120, 150, Hz or Through) for the unit's front & rear channels (speaker- or preamp-level), so low frequency signals are cut off from your system's front & rear speakers.

    Pro EQ: The KD-R840BT is equipped with JVC's Pro EQ. The integrated equalizer offers 7 preset sound modes (Flat, Natural, Dynamic, Vocal Boost, Bass Boost, & User) suitable for the music genre of your choice. The User mode allows you to manually adjust the head unit's 3-band parametric EQ (Frequency, Level, and Q-Factor).

    Pro EQ
    Frequency Level Q
    Bass 60, 80, 100, 200 Hz +/- 12 dB (-6 to +6) 1.0, 1.25, 1.5, 2.0
    Midrange 0.5, 1.0, 1.5, 2.5 kHz +/- 12 dB (-6 to +6) 0.75, 1.0, 1.25
    Treble 10.0, 12.5, 15.0, 17.5 kHz +/- 12 dB (-6 to +6) Fixed
    Note: You can store Pro EQ bass, middle and treble tone settings for each source (CD, AM/FM, Aux, USB, iPod, Bluetooth, and Pandora).

    Bass Boost: The unit's Bass Boost enhances low bass frequencies.

    Loud (Loudness): This feature boosts low and high frequencies to produce a well-balanced sound at a low volume level. You can set this feature to High, Low, or Off.

    Volume Adjust: The input level of each source (other than FM) is adjustable relative to the FM radio volume, so there isn't a significant volume difference when changing sources. Each source is individually adjustable from -5 to +5.

    Key Beep: The in-dash head unit provides an audible beep to confirm button operation. This function can be turned On or Off.

    Display Features

    Detachable Face: The JVC KD-R840BT features a detachable face to deter theft (a hard plastic face case is provided). An optional soft face case (142DFC1X, sold separately) can also be purchased for this unit. A face-fixing screw is supplied for making the face non-detachable, if desired.

    5 Zone Variable Color: The head unit's variable color illumination is separated into 5 Zones (LCD, rotary dial, button zone 1, button zone 2, and button zone 3). The KD-A845B offers 29 color presets and custom colors for each of these zones. You can choose one of these color presets or select the ColorFlow mode which scrolls through all 29 color presets. Additionally, there is a User preset, allowing you to individually adjust the intensity of Red, Green, and Blue from 0 to 31; resulting in approximately 30,000 custom color options. You can choose to use the same color for all 5 Zones, or use a different color for each separate Zone.

    • LCD Zone: The LCD zone refers to the head unit's LCD screen.
    • Rotary Dial Zone: The rotary dial zone refers to the unit's rotary volume control.
    • Button Zone 1: Button Zone 1 contains Phone, Menu, Source/Power, Back/Return, Next/Previous Track buttons.
    • Button Zone 2: Button Zone 2 contains EQ, Display, Preset 1, Preset 2, and Preset 3 buttons.
    • Button Zone 3: Button Zone 3 contains Preset 4, Preset 5, Preset 6, and Eject buttons; along with USB port backlight.

    Lighting Effects: You can select a preset color change pattern/speed for all zones (LCD, rotary dial, button zone 1/2/3). Choose from Spectrum, Groove, Techno, Emotion, Relax, and NightSweep.

    5 Zone Brightness Control: The unit offers a daytime and nighttime brightness setting for the LCD, rotary dial, button zone 1, button zone 2, and button zone 3. You can also adjust the brightness level of each zone manually from 0-31.

    Color Guide: When activated, the Color Guide mode changes the display and all button illumination to white when menu settings or music list search are performed.

    Auto Illumination Dimmer: The display/button illumination dimmer can be set to Off (normal brightness at all times), On (display/button illumination is always dimmed), or Auto (display dims when 12-volts is applied to the orange/white illumination lead).

    Remote/Bluetooth Control

    Wireless Remote Control: The KD-R840BT comes supplied with a wireless remote control (RM-RK52). The remote contains Attenuator, Sound, Source, Tracking, and Volume functions. The remote operates off of a single CR2025 3V Lithium-cell battery (included).

    Steering Wheel Remote Compatibility: The head unit features an OEM steering wheel remote control input wire (blue/yellow) within the included wiring harness that lets you keep your vehicle's factory radio steering wheel remote controls when used with an optional steering wheel audio control adapter (sold separately). Please consult Crutchfield's Outfit My Car to see if your vehicle is compatible.

     

    Product reviews from the Crutchfield Labs (what are the Labs?)

    Video: JVC 5-Zone Variable-Color Illumination

    Video: JVC 5-Zone Variable-Color Illumination

    by Zak Billmeier
    4/19/2013
     
    Video: JVC 5-Zone Variable-Color Illumination

    JVC makes it easy to dial in just the right look for your in-dash receiver - their new 5-zone variable-color illumination puts thousands of color combinations at your fingertips. Certain JVC...

     
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    JVC KD-R840BT Reviews

    Average Customer Review:

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    4 out of 5

    kd 8840bt

    Written By amp, tucson az on Tuesday, April 08, 2014
    Crutchfield Customer Review (What's this?)
     
    I believe for the price this is a great deck. The hands free bluetooth my friends say is better than in my 2013 f350 when im talking to them thru system...which is kind of scarey since this is just over a hundred, any way decent sound,,,controls I had to look up in manual to fully operate and we will see on durability since its a new purchase
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    5 out of 5

    Great Reciever!

    Written By Ben, Utah on Sunday, March 02, 2014
    Crutchfield Customer Review (What's this?)
     
    I bought this stereo for my car because it looked cool, it could change colors, and it was ready for subs. I really like the rear USB port, I hooked up my iPod to my radio and it is in the center console now. I've definitely had better receivers, I like Pioneer the best, but this is still a great one. I'm satisfied with the purchase.
    Pros:
    Rear USB I love it, trillions of different colors, Bluetooth, looks spunky sittin in the dash.
    Cons:
    It can get kindof tricky figuring out how to use the receiver, I think Pioneer receivers sound more clear, pressing the center button either pauses or mutes the music and takes some getting used to.
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    5 out of 5

    Love this radio

    Written By Paul from WA, Washington on Friday, February 28, 2014
    Crutchfield Customer Review (What's this?)
     
    This radio has so many features that it has taken me a bit to fanagle the perfect sound for my car. But it sounds perfect. My kid loves changing the colors to match what he's wearing so I suppose it passes the kid cool factor as well. The rear USB fit perfect under the dash so now I have a hidden charger and it got rid of the unsightly iPhone charger in the center console.
    Pros:
    Looks great, sound great and great price. It even remembered my station presets after disconnecting the battery.
    Cons:
    None.
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    5 out of 5

    Nice stereo

    Written By that one guy, Kansas on Friday, February 28, 2014
    Crutchfield Customer Review (What's this?)
     
    Great product, sounds and looks good. Love the Bluetooth feature!
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    5 out of 5

    Great head unit

    Written By SlowRollinTurtle, Arkansas on Thursday, February 27, 2014
    Crutchfield Customer Review (What's this?)
     
    Great unit, easy to use. Second jvc unit I've bought and both are great.
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    5 out of 5

    Pleased customer

    Written By Calif surfer, Los angeles, Ca on Wednesday, February 26, 2014
    Crutchfield Customer Review (What's this?)
     
    I am pleased with the JVC radio. The price is good and it performs well so it is a good buy. The sound quality is better than my stock radio was in my town & country van.
    Pros:
    Instructions were good and easy to do. Splicing the connector on was made easy with the suppplied wire connectors. The adapter for the radio fit well. It paired with my i phone easiely and works excellent.
    Cons:
    The radio operating instructions are a bit complitated and require come time to get right. Lots of features to understand.
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    4 out of 5

    Great gear

    Written By J, Beaverfalls, pa on Saturday, February 22, 2014
    Crutchfield Customer Review (What's this?)
     
    Great gear, even better buy for the price. Would recommend this to everyone!!!
    Pros:
    Lots of customization options. Plus it's jvc so you know it's worth it. Built in Bluetooth so you don't have to worry about losing the blue tooth adaptor.
    Cons:
    Buttons could be bigger, more subwoofer options needed. Overall one badass head unit though.
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    4 out of 5

    love it!

    Written By marissa, Illinois on Friday, February 14, 2014
    Crutchfield Customer Review (What's this?)
     
    I really love this stereo. Lots of cool features. Crutchfield even sent me everything I needed for installation.
    Pros:
    It automatically syncs up with my phone when Bluetooth is on. Great for hands free calls when driving or listening to Pandora radio.
    Cons:
    None so far!
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    5 out of 5

    Really Nice Head Unit

    Written By Wesley, Beaver, OH on Saturday, February 08, 2014
    Crutchfield Customer Review (What's this?)
     
    It is an awesome stereo, sounds great and was easy to install. Really like the Bluetooth feature. Would defiantly buy another.
    Pros:
    Looks really good and the Bluetooth is a must have.
    Cons:
    None
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    5 out of 5

    One of the best deals out there

    Written By sandy, Pacifica, CA. on Tuesday, January 14, 2014
    Crutchfield Customer Review (What's this?)
     
    This is the best car stereo I have ever owned. The sound quality is excellent. Just the look of the stereo is awesome with the different colored lights. I also like the fact that you can play your ipod . and the blue tooth connection for a hands free phone calling.
    Pros:
    Sound quality, ease of use, and a Great value.
    Cons:
    can't think of one
    1 out of 1 people found this helpful
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    5 out of 5

    jvc kd-r840bt

    Written By Art, orangevale, ca on Friday, January 10, 2014
    Crutchfield Customer Review (What's this?)
     
    overall im very happy with my purchase. finding out that it does more than i had expected but still working on figuring out the eq
    Pros:
    looks great and sounds great and ya cant beat the price
    Cons:
    AT FIRST learning how to set to your own personal preferences was a challenge but getting the hang of it now
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    5 out of 5

    Fantastic Stereo

    Written By Anonymous, Anchorage, AK on Friday, December 27, 2013
    Crutchfield Customer Review (What's this?)
     
    Bought this for my wife for Christmas. Its a very cool, feature rich stereo with great sound. Install was a breeze, setup and configurations was super easy. Setup and sync with her smartphone was a breeze, now she is listening to Bluetooth streamed music and taking calls off her phone. Besides all the great features, the display has a super cool look with a zillion different color combinations etc. I would recommend to anyone looking to replace an older or stock stereo.
    Pros:
    Lots of features, Bluetooth for phone calls, imports contacts, stream any kind of music off smartphone, connect ipod, mp3, other devices.
    Cons:
    buttons are a bit cluttered, Bluetooth mic sound is marginal.
    3 out of 3 people found this helpful
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    5 out of 5

    JVC KD-R840BT

    Written By Anonymous, San Juan, PR on Friday, December 20, 2013
    Crutchfield Customer Review (What's this?)
     
    Excelent update to my car
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    5 out of 5

    Great Radio, Great Features for a Great Price

    Written By Dexter N, Portland, ME on Wednesday, December 11, 2013
    Crutchfield Customer Review (What's this?)
     
    Really, really love this radio. Put this in my 03 Wrangler after my old radio went out. There were many more features than I had originally thought which i really loved. Super easy to use, easy to install and overall a great radio.
    Pros:
    Great Sound, easy use, easy install, not to many bad things to say.
    Cons:
    When I got the kit it was missing several parts including bolts and one connector which I found at a local hardware store which isn't that big of a problem.
    1 out of 1 people found this helpful
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    5 out of 5

    JVC KD-R840BT

    Written By bouge07, Gray, LA on Wednesday, December 11, 2013
    Crutchfield Customer Review (What's this?)
     
    Easy to set up and does everything that need a stereo to do. Easy set up and easy to use, once you get used to the menu layout.
    Pros:
    Any color easy set up easy to install
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    5 out of 5

    Good Radio - Couple of Speed Bumps - Good Support

    Written By John S, Castle Rock, CO on Saturday, November 23, 2013
    Crutchfield Customer Review (What's this?)
     
    Needed to replace a failed radio in a Mountaineer. This provides a good range of features including the BT connectivity for only a little more than a repair to the old radio. The BT worked very well with my Samsung Android phone for both phone calls & Pandora. It gives me the capabilities found in new car factory systems at a much lower cost. Comments from people on the other end of the phone were very positive for clarity & volume. As far as the radio sound, this is one star down due to my inability to run it higher with the factory speakers - not the radios fault, but couldn't test the high power end.

    Overall, the installation was not very difficult if you have a basic understanding of auto dashes and radios. Even without that, the instructions were good so even a novice could probably handle it without much challenge. Don't forget the second acknowledgement for the BT pairing. That one bit me because I didn't read it well. I did have some speed bumps with the supplied harness / cabling, but Crutchfield shipped out a replacement and afterward, went the extra effort to make everything right. I would definitely consider buying from them again.
    Pros:
    Good sound, great BT / phone features. Programing relatively intuitive after a quick skim of the manual. Good support from Crutchfield.
    Cons:
    Obnoxious initial demo mode - could trigger an epileptic fit :) .
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    5 out of 5

    Installation for JVC KD-R840BC Mustang II

    Written By DarylS, Wheaton, MN on Saturday, November 16, 2013
    Crutchfield Customer Review (What's this?)
     
    The Radio installation was a little more complicated than I had first thought for the 1983 Mustang convertible due to the 2 channel factory installed amplifier. I ended up having to completely bypass most of the factory wiring associated with the amp. I used the installation kit and wired the included connectors directly to all the installed speakers. I did not use the PAC SOEM-4 Factory Integration Adapter nor was it needed after wiring direct to the speakers. The wiring in the Mustang does not match any of the install kit or normal radio wiring colors, so it is best to get a drawing of the factory radio installation. I tried every way that technical help thought to wire the PAC SOEM-4 Factory Integration Adapter, but couldn't get more than a normal conversation level of speaker noise, so that is why I wired direct to the speakers and I ended up not using the PAC-4 I should have done that in the first place. It sounds great and has the volume needed for a convertible.
    Pros:
    After installation works great with the satellite radio option
    Cons:
    Lots of modifications to the dash and wiring. It has an obnoxious demo mode the comes up everytime power is removed from the unit. I had disconnected the battery for the install and did lots of temporary test, got tied of the demo mode.
    1 out of 1 people found this helpful
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    4 out of 5

    Great head unit!

    Written By stephen, Fredericksburg on Saturday, November 09, 2013
    Crutchfield Customer Review (What's this?)
     
    Great head unit, forced to buy after my car was broken into and head unit was stolen. Chose this headunit as it had all the same features I needed. (Bluetooth and aux cord really)

    I really noticed the difference going from 2v to 4.8v preamp voltage. nice little pick-me-up after losing the previous head unit.
    Pros:
    Bluetooth, Color control, clear audio
    Cons:
    Would've been nice to have a full LCD display, but I knew that before I bought the unit.
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    5 out of 5

    great radio for price

    Written By Mike, Bartlett, IL on Tuesday, November 05, 2013
    Crutchfield Customer Review (What's this?)
     
    Bought for my sons car. Installation was easy and radio has good sound and features. Would buy again!!
    Pros:
    Cool features, good sound
    Cons:
    None
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    5 out of 5

    Nice unit great price

    Written By en258, Kingman, KS on Monday, November 04, 2013
    Crutchfield Customer Review (What's this?)
     
    Easy to use. Buttons are a little small and takes a little time with owners manual to figure some stuff out but once you do all is good
    Pros:
    price looks
    Cons:
    small buttons
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    4 out of 5

    JVC In Dash 840BT

    Written By rjw, Chapel Hill, North Carolina on Thursday, October 31, 2013
    Crutchfield Customer Review (What's this?)
     
    Good quality in dash replacement. The tuning is awkward - 6 stations preset with a button, the remaining 12 presets are a two button sequence plus a dial setting - not great while driving. Otherwise a great unit
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    5 out of 5

    JVC KD-R840BT

    Written By rlowrdr2003, ttown alabama on Tuesday, October 29, 2013
    Crutchfield Customer Review (What's this?)
     
    real good head unite for the money does everything i need and more
    Pros:
    great buy
    Cons:
    no option to play pandora threw bluetooth
    1 out of 1 people found this helpful
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    5 out of 5

    JVC KD-R840BT

    Written By Anonymous, Cheyenne Wyoming on Thursday, October 24, 2013
    Crutchfield Customer Review (What's this?)
     
    Great receiver. Easy installation and great sound. Amazing for the money. Definitely recommend.
    Pros:
    Lights, sound, ease of use, Bluetooth
    Cons:
    None
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    5 out of 5

    very nice

    Written By ot, miami on Tuesday, October 08, 2013
    Crutchfield Customer Review (What's this?)
     
    Excellent for the price love the bluethoot option
    Pros:
    2 Bluetooth at the same time nice features
    Cons:
    Hard to set up mike option it was better to pay for installing
    1 out of 1 people found this helpful
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    5 out of 5

    Just awesome

    Written By BASS CHEF, Salinas CA. on Monday, October 07, 2013
    Crutchfield Customer Review (What's this?)
     
    I love this unit
    Pros:
    Clean sound, easy EQ controls love the multiple color change zones reads usb very fast 4.8v rca outputs that is a plus every time front and rear usb built in Bluetooth the unit is just awesome
    Cons:
    Have not found any after two weeks of use
    1 out of 1 people found this helpful
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    4 out of 5

    JVC KD-R840BT

    Written By Antonio A, Keatchie,la on Friday, September 20, 2013
    Crutchfield Customer Review (What's this?)
     
    I think it is a great receiver.
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    5 out of 5

    Very Happy

    Written By Laura M, Michigan on Wednesday, September 18, 2013
    Crutchfield Customer Review (What's this?)
     
    This has great sound and more features than I will ever use.
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    5 out of 5

    Another great product from JVC

    Written By Todd B., Brownsville, KY on Wednesday, September 11, 2013
    Crutchfield Customer Review (What's this?)
     
    I only put JVC players in my vehicles and have since 1998. The player that is currently in my honda has been thru 3 cars and was purchased new back in 2002. Its still works great and that is why it was a no brainer that I bought this for my daughters first car. You get so much for the $$. The mic for the hands free calling works great and there are so many settings to really tweak the sound you want to get. I'll never own another player other than JVC. I recommend this for anyone but especially parents that want their kids to have hands free calling to make it safer on the road.
    Pros:
    Great value. Great sound. Awesome Features. Very easy to use. Bluetooth Tech is crisp and clear.
    Cons:
    Quite honestly the remote that comes with it is unnecessary but since its included for free no biggie. I just never use it.
    1 out of 1 people found this helpful
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    5 out of 5

    Awesome Head Unit!!

    Written By Jeremiah, El Paso, TX on Tuesday, September 03, 2013
    Crutchfield Customer Review (What's this?)
     
    Installed this in a Mercury Mariner. Couldn't have been easier! Heard the difference immediately, even through the supposedly "Premium" Audiophile System from Ford. Changed out the crap factory speakers and did custom install of Sony 6 1/2 component speakers, even though it was stated that they would not fit! Sounds INCREDIBLE now! Even through the factory amp and subwoofer! Couldn't be happier with all the extras like Bluetooth, Sirius XM radio which I actually Bluetooth using my free XM app which negates the need for a separate antenna (Sorry Crutchfield...) The DEMO Mode for the lights is a lil tricky to get rid of but once its done, you actually kind of mish the flashing lights and have to tweak it again to look as cool as before.
    Pros:
    Everything
    Cons:
    Not a one
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    3 out of 5

    JVC KD-R840BT

    Written By Will, Canterbury CT on Wednesday, August 28, 2013
    Crutchfield Customer Review (What's this?)
     
    Has many options for the money, Overall a good radio. It has 18 FM presets, 12 of them are a pain in the neck to get to.
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    4 out of 5

    Good radio with lots of features for the price

    Written By MattD, Germantown, MD on Friday, August 23, 2013
    Crutchfield Customer Review (What's this?)
     
    Nice radio with lots of features. Not super intuitive at first to use but not too hard to learn. At the price point it is hard to find anything to complain about.
    Pros:
    Bluetooth, Android/IPhone connectivity, decent performance all around
    Cons:
    Bluetooth can be a tad flaky but that seems true of most bluetooth
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    4 out of 5

    Solid Single

    Written By PC, Indianapolis, IN on Sunday, August 18, 2013
    Crutchfield Customer Review (What's this?)
     
    Overall solid unit for the price. Only some slight glitches in connectivity with iPhone 5. Never anything that isn't correctable, though.
    Pros:
    Good sound, streaming, and 2 USB ports.
    Cons:
    Bluetooth sometimes doesn't cooperate.
    1 out of 1 people found this helpful
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    4 out of 5

    Great unit

    Written By Rt, Great Falls, mt. on Wednesday, August 14, 2013
    Crutchfield Customer Review (What's this?)
     
    Great stereo for the money. Everything worked as it was described and it sounds and looks great! Very happy I bought this unit!
    Pros:
    Bluetooth is easy to setup. Pandora compatible and phone calls are a breeze.
    Cons:
    There is a lot to try and learn about this unit and it can be overwhelming.
    1 out of 1 people found this helpful
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    "Coolness Factor"
    Build Quality
    Ease of Use
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    4 out of 5

    JVC KD-R840BT

    Written By D. L, Memphis, TN on Saturday, August 03, 2013
    Crutchfield Customer Review (What's this?)
     
    Very nice radio with good sound quality and high power came with good installation instructions.
    Pros:
    I like the Bluetooth and the pandora radio capabilities.
    1 out of 1 people found this helpful
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    "Coolness Factor"
    Build Quality
    Ease of Use
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    4 out of 5

    jvc

    Written By Anonymous, los angeles, ca on Friday, August 02, 2013
    Crutchfield Customer Review (What's this?)
     
    Easy to install in 2002gmc truck.
    Pros:
    variable color display, rear USB.
    Cons:
    small buttons for radio presets.
    1 out of 1 people found this helpful
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    "Coolness Factor"
    Build Quality
    Ease of Use
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    3 out of 5

    JVC KD-R840BT

    Written By JCara12, Pennsylvania on Wednesday, July 31, 2013
    Crutchfield Customer Review (What's this?)
     
    There are several features I like on this unit, most notably that I can play Pandora through my Android phone and use the unit's remote control to change the song. No need to go back and forth between the phone and the receiver. However, the receiver is not user-friendly. I read the manual top to bottom and spent about 30 minutes trying to set things up but I still can't figure out how to use folders on the USB drive or how to fix the lighting. The receiver display flashes and changes colors like crazy and it looks like a rave party in my car at night- so embarrassing. I am sure Crutchfield can help me fix these things but I just don't have the time to mess with it. The sound might be good but I wouldn't know. I bought the unit bc I was advised to by Crutchfield bc of its high preamp output voltage but found out after installation that my car's amp can't handle it and it basically sounds like crap if I turn it up past regular listening volume. I'm not happy with this purchase or the advice I received from Crutchfield.
    1 out of 5 people found this helpful
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    "Coolness Factor"
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    5 out of 5

    Amazing

    Written By Skate shredder, Temperance mi on Monday, July 29, 2013
    Crutchfield Customer Review (What's this?)
     
    I have always loved JVC products and I had a old JVC radio in my cherokee and it was about 10 years old so I needed an upgrade I compared all the other ones and even a 1,000 dollar one and this one was way better
    Pros:
    Easy buttons. Great features. Amazing Bluetooth.
    Cons:
    Wish it had HD radio but o well I love it
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    "Coolness Factor"
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    1 out of 5

    JVC KD-R840BT

    Written By John C., Minneapolis, MN on Wednesday, July 24, 2013
    Crutchfield Customer Review (What's this?)
     
    Hard to program features , especially getting rid of "demo" mode. Seems to skip over FM1 and only goes to FM2. Remote is awkwardly shaped and too small making it hard to use.
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    4 out of 5

    JVC KD-R840BT auto radio

    Written By Jedpop075, Howard Beach, N.Y. on Tuesday, July 16, 2013
    Crutchfield Customer Review (What's this?)
     
    Very pleased with this radio and was easy to install with the installation kit for my auto
    Pros:
    Ease of installation
    Cons:
    N/A
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    Build Quality
    Ease of Use
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    5 out of 5

    jvc kd r840bt

    Written By Anonymous, Goodlettsville,TN on Sunday, July 14, 2013
    Crutchfield Customer Review (What's this?)
     
    It was a good radio till my baby girl's car was broken to and the radio was stolen along with the amp and speakers now all gone.
    Pros:
    great radio and good price
    Cons:
    none
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    "Coolness Factor"
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    5 out of 5

    Amazing! Sound difference!

    Written By Anonymous, Chicago, IL on Sunday, June 30, 2013
    Crutchfield Customer Review (What's this?)
     
    At first I was going to get a ken wood receiver but glad I didn't because this one is just so amazing. As soon as I installed it (crutchfield makes installing super easy because they give you instructions and if you can't do it still they have a support line you can call) I could tell the difference in my music.
    Pros:
    Colors Sound quality USB Bluetooth Controller
    Cons:
    Honestly none.
    2 out of 2 people found this helpful
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    "Coolness Factor"
    Build Quality
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    Sound Quality
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    5 out of 5

    Great unit for the price.

    Written By tsuds, Kona, HI on Tuesday, June 25, 2013
    Crutchfield Customer Review (What's this?)
     
    I Got this mostly for the bluetooth hands free, and to improve audio quality over stock head unit. This unit definitely does both well. I couldn't ask for more for the price.
    1 out of 1 people found this helpful
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    "