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Kenwood KMM-BT308U

Digital media receiver

Get installation gear for most cars for only $15 for only $15
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  • Kenwood KMM-BT308U

    Kenwood KMM-BT308U

  • Kenwood KMM-BT308U

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  • Kenwood KMM-BT308U

  • Kenwood KMM-BT308U

  • Kenwood KMM-BT308U

    Plays MP3, WMA, WAV, and FLAC files

  • Kenwood KMM-BT308U

    Remote

 

Our take on the Kenwood KMM-BT308U

by Jon Paulette
Kenwood

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.

No discs needed

Tired of those scratched-up CDs taking up space in your car? With Kenwood's KMM-BT380U digital media receiver, you can ditch the discs and enjoy music stored on a variety of devices. Built-in Bluetooth® means you can stream your music wirelessly, plus you'll enjoy the convenience and safety of hands-free calling.

Kenwood's engineers packed this receiver with plenty of features, and, more amazingly, they made it all fit into a "short body" design that fits into almost any vehicle. This app-friendly receiver works with iPhones and Android devices, so you'll be able to stream your favorite Internet radio stations. If your iPhone is equipped with Siri® Eyes Free functionality, anything you can do with your phone can be done with your receiver. For Android users, Kenwood's Music Control app allows you to enjoy a variety of search and playback features.

Plenty of ways to play

Of course, you can also access the MP3, WMA, WAV, AAC, and FLAC files stored in your device using the dedicated "search" and "return" buttons. Handy tools like AppMode, Alphabet, Percentage Skip, and Related Search will help you find your music fast. If you play music using your iPod®, you can plug your player (with optional cable) into the front-panel USB input to enjoy Internet radio on Pandora, iHeartRadio, Aupeo! or TuneIt.

Need even more options? Drive Change allows you to connect a memory card reader or USB hub to the Kenwood's USB input and select music from up to five memory cards or USB flash drives. You can also plug in a thumb drive, or jack an MP3 player into the front-panel AUX input. No matter what you're playing, Kenwood's Drive EQ technology will compensate for wind and road noise to achieve maximum sound quality. And with the 13-digit LCD display, it's a lot easier to see song titles and channel information.

This digital media receiver will not play CDs. If you want to play CDs in your vehicle, we offer a wide selection of CD receivers.

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/smartphone note: If you're going to use your iPod or smartphone with this receiver, be sure to check "Details" for compatibility information.

See more info on this item

Highlights:

    General features:
    • digital media receiver with AM/FM tuner (does not play CDs)
    • built-in Bluetooth for hands-free calling and music streaming
    • MOSFET amplifier (22 watts RMS/50 peak x 4 channels)
    • compatible with Kenwood Music Control app for select Android phones
    • Pandora control with iPhone and Android
    • detachable faceplate
    • 13-digit LCD display with blue key illumination
    • plays MP3, WMA, AAC, WAV, and FLAC files
    • wired Bluetooth microphone included
    • remote control included
    Audio features:
    • System Q Sound Control (8 EQ curves and a 3-band equalizer)
    • Sound Reconstruction improves the sound of heavily compressed music files
    • low-pass filter and subwoofer level control
    • bass boost
    Expandability:
    • iPod direct control via USB input
    • inputs: front-panel auxiliary input and USB port
    • outputs: 2-channel preamp outputs (2.5-volt rear/sub)
    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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    No
    RMS Power Output
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    22 watts
    Peak Output
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    50 watts
    RMS Power Bandwidth
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    20-20KHz
    Preamp Outputs
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    2-channel
    Sub Preamp Outputs
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    No
    Switchable Rear Preamp Outputs
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    Yes
    Preamp Voltage
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    2.5 volts
    Display Color
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    White
    Key Button Color
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    Blue
    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
    Memory Card Slot
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    USB memory
    Bluetooth Compatible
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    Built-in
    Satellite Radio Ready
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    No
    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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    8.2 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

    • Digital media receiver (10A fuse)
    • Face (attached)
    • Trim ring (attached)
    • Sleeve (installed)
    • Wiring harness
    • Wireless remote control (RC-406)
    • CR2025 3V lithium-battery (installed in remote)
    • Microphone with integrated bracket (attached 10' cable terminated by a right-angle male 3.5mm connector)
    • 2 Removal tools
    • Face-fixing screw
    • Instruction Manual (En/Fr/Sp)
    • Warranty Card

    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
    USB/Android Integration
    iPod/iPhone + Aux  Connectivity
    AM/FM & Internet Radio
    Audio Section
    Display & Remote Features

    Built-in Bluetooth

    Bluetooth Technology: The Kenwood KMM-BT308U is equipped with built-in Bluetooth (ver. 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 Kenwood KMM-BT308U. Visit Kenwood's Support Site for a complete list of compatible Bluetooth enabled phones.

    Secure Simple Pairing (SSP) + Auto Pairing (for iPhone): With Secure Simple Pairing (SSP), you can easily pair a Bluetooth enabled phone to the Kenwood KMM-BT308U without having to enter pin codes or go through complicated settings. When a paired Bluetooth device is in close proximity to the receiver, the auto connection function automatically pairs the two units. You can pair up to five Bluetooth-enabled devices to the Kenwood head unit with a maximum of two Bluetooth phones and one Bluetooth audio player connected at one time (but only one can be used at a time). You can even pair your Apple iPhone by simply connecting it to the Kenwood head unit via USB and following a single prompt on the head unit's display.

    Bluetooth Hands-Free Communication: The head unit supports Bluetooth hands-free communication for your Bluetooth enabled mobile phone. The controls of the KMM-BT308U can be used to dial a number, answer an in-coming call, or end a call. The unit also includes an external microphone (featuring adjustable gain), so you can carry on your side of the conversation while listening to the caller through your vehicles speakers. During a conversation, you can switch between the Private Mode (talking directly on your cell phone) and the Hands Free Mode. 

    • 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 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 1-30 seconds. The KMM-BT308U 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 KMM-BT308U, 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 control knob or remote control.
      • Speed (Preset) Dialing: Allows you to register up to 6 phone numbers for quick dialing. The preset numbers can be accessed from the head unit's Control Knob.
      • Phone Book: You can dial by using the downloaded phone book. You can download phone book data from your cell phone to the KMM-BT308U. Up to 600 numbers can be stored for each registered cell phone. Each number can be up to 32 digits long and each name can be up to 50 characters long.  Stored phone numbers can be categorized by General, Home, Office, Mobile, or Other. You can search each category of the phone book in alphabetical order.
      • Call History: The Call History 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.
      • Voice Dialing: If your mobile phone supports voice recognition, then you can dial out by voice command. Simply speak into the included microphone.

    Note: 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 10' 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 1.505" (depth).

    SMS: If your Bluetooth enabled mobile phone is compatible with SMS (Short Message Service), the Kenwood 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 Kenwood KMM-BT308U also supports wireless audio playback (AD2P) and control (AVRCP) of a Bluetooth enabled audio player or smartphone. The KMM-BT308U 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 KMM-BT308U 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 Eyes Free Control: When paired and connected with an iPhone 4S or 5/5C/5S via Bluetooth (not USB), the Kenwood KMM-BT308U has the ability to access Siri through its front-panel controls and external microphone. Simply press-and-hold down on the head unit's Answer Button 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 KMM-BT308U and its microphone. The head unit's display will only indicate hands-free calling and Bluetooth audio information (all other functions of Siri are only audible through the Kenwood KMM-BT308U; 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.

    USB/Android Integration

    USB Port: The Kenwood KMM-BT308U features a front panel USB (type-A) port that is hidden behind a flip-up cover. The USB port enables connection and control of a portable USB mass-storage class (MSC) devices; such as select Android smartphones (Froyo/Gingerbread OS only), portable digital audio players, or USB thumbdrives. The unit supports playback of MP3, WMA, WAV, and FLAC music files stored on a compatible USB memory device formatted with FAT file system. USB portable audio players that can be charged via USB will be charged when plugged into the digital media receiver's USB port (max. 1A), and the vehicle's ignition switch is set to ACC or On.

    Media Type Description
    File System FAT 12/16/32
    Playable File Types  MP3: bit rate of 8-320 kbps w/ sampling rate of 8-48 kHz
    WMA: bit rate of 32-192 kbps w/ sampling rate of 8-48 kHz
    WAV: bit rate of 16-bit w/ sampling rate of 44.1 kHz
    FLAC: bit rate of 16-bit w/ sampling rate of 8-48 kHz
    Maximum # of Folders/Files 999 folders/20,480 files (999 files per folder)
    Tags ID3 (ver.1.0/1.1/2.2/2.3/2.4), WMA, WAV, and Flac tags
    Note: When a mass-storage class (MSC) compatible smartphone is connected to the head unit's USB input, the unit's Drive Change features lets you select its internal memory or external memory (such as an SD card) for stored music playback. The Drive Change feature also lets you switch between multiple memory cards (up to 5) in a USB multi-card reader or multiple USB thumbdrives (up to 5) connected to a USB hub.

    Music Control for Android Smartphone: The Kenwood Music Control app for Android organizes your Android smartphone's music, while providing quick and easy search capability from the Kenwood digital media receiver. The free Kenwood Music Control App for Android can be downloaded onto your Android smartphone from the Google Play App Store. Your Android smartphone must be running Android OS Froyo or Gingerbread (2.2+). Once the app is downloaded and has a chance to organize all the stored music on your Android smartphone, you can connect your Android smartphone to the Kenwood digital media receiver via USB (your compatible Android smartphone must be recognized as a USB mass storage class device; not compatible with MTP protocol). The Kenwood Music Control app offers the following Android supported functions.

    • Song Management: Music stored in your Android smartphone can be navigated from the Kenwood digital media receiver. Songs can be easily selected by searching for a Song title, Artist name, Album label, or Genre.
    • Song Information Display: Song information such as Artist name, Song title, and Album label are displayed on the connected Kenwood digital media receiver.
    • Mood Playlist: Playlists can be created by classifying songs into categories by type of mood. Songs are analyzed and classified into the following categories of moods - High Energy (Active/Powerful/Core), Acoustic (Detailed/Simple/Smooth/Easy), Standard (Dynamic/Rockin/Vivid), Stylistic (Cool/Urban/Trance)
    • Intro Skip: This function allows you to choose and listen to only the hook-lines of songs stored in your Android smartphone.
    Note: When the Kenwood Music Control app is first downloaded it will require some time to populate all the music, so we suggest doing this overnight.

    Music Editor Compatible: The Kenwood KMM-BT308U supports the PC application, Kenwood Music Editor Lite Kenwood's Music Editor Lit (v1.1.0). Kenwood Music Editor Lite is a Windows-based desktop software that helps organize, manage and transfer MP3/WMA music files to your USB thumbdrive from your PC. When you playback audio files that have been stored on your USB thumbdrive using Kenwood Music Editor Lite through this unit, you can search a file by title, album, or artist name using the head unit's Music Search function. The Kenwood Music Editor Light (v1.1.0) Windows-based software can be downloaded for free from Kenwood's website to your PC. The Kenwood Music Editor Light 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)
    • Windows 8
    Note: Not compatible with Apple iPod/iPhone/iPad, Zune, or Android

    Aux In: The unit is equipped with a front panel 3.5mm minijack auxiliary input that can be used to input audio from a portable audio source, such as a portable MP3 player. The Aux input must be turned on to function. The KMM-BT308U allows you to select the source type displayed when using the auxiliary input. You can choose from AUX, DVD, Portable, Game, Video, or TV. The unit has three aux input modes.

    iPod/iPhone + Aux Connectivity

    iPod Direct Connection: The Kenwood KMM-BT308U's front-panel USB port can be used to connect your 30-pin dock connector or Lightning-connector iPod/iPhone to the head unit. The KMM-BT308U supports audio playback, music navigation, information display, and charging of your compatible Apple device.

    • 30-Pin Dock Connector: If you have an older iPod/iPhone with a 30-pin dock connector, you can use Kenwood's dock connector-to-USB cable (113KCIP102, sold separately) or the dock connector-to-USB cable that comes with your Apple device to connect your iPod/iPhone to the KMM-BT308U.
    • Lightning Connector: If you have a newer iPod/iPhone with the Lightning-connector, you can use the Lightning-to-USB cable that came with your Apple device to connect your iPod/iPhone to the KMM-BT308U.

    Note: 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 (if your iPod/iPhone has no initial battery charge, then the unit will not recognize it).

    iPod Audio Playback w/ 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 16-bit D/A converter, allowing for a Signal to Noise ratio up to 105dB. The Kenwood head unit supports audio playback of stored music, podcasts, audiobooks, and music apps on your iPod or iPhone. The KMM-BT308U provides music control and song/artist information display.

    • Music Control: The Kenwood head unit allows you to navigate your iPod's music by Playlist, Artists, Album, Genre, Composer, Song, or Podcast. You can search these categories alphabetically (A-Z) or using a percentage search (0.5%, 1%, 5%, 10%). The head unit also supports Repeat (file) & Random (folder) playback functions of your connected iPod/iPhone. Newer iPod/iPhones with iOS 6.0+ allow you to continue to access your Apple device's touchscreen. Older iPod/iPhone devices will be locked during connection.
    • Song/Artist Info: The KMM-BT308U will display your iPod/iPhone's music file information. The head unit will display Track number, Elapsed playing time, Artist name, Song title, and Album label.

    Apple Device Compatibility Chart: The Kenwood KMM-BT308U is "Made for iPod/iPhone" compatible and supports the following iPod/iPhone model features (as of 2/14/2014):

    Apple Device Generation Tested Version Media Type Control Type Specific Apps Display Type Bluetooth Charge
    Audio Video Head Unit iPod/iPhone Pandora app iHeart Link Artist/Song Text Track Info Phone Audio Siri
    iPhone 2G 3.1.3 Y N Y Y N N Y Y Y N N Y
    3G 4.2.1 Y N Y Y N N Y Y Y Y N Y
    3GS 5.1.1 Y N Y Y Y Y Y Y Y Y N Y
    4 7.0.4 Y N Y Y Y Y Y Y Y Y N Y
    4S 7.0.4 Y N Y Y Y Y Y Y Y Y Y Y
    5 7.0.4 Y N Y Y Y Y Y Y Y Y Y Y
    5C 7.0.4 Y N Y Y Y Y Y Y Y Y Y Y
    5S 7.0.4 Y N Y Y Y Y Y Y Y Y Y Y
    touch 1st 2.2.1 Y N Y Y N N Y Y N N N Y
    2nd 4.2.1 Y N Y Y N N Y Y N Y N Y
    3rd 5.1.1 Y N Y Y N N Y Y N Y N Y
    4th 6.1.2 Y N Y Y N N Y Y N Y N Y
    5th 7.0.4 Y N Y Y N N Y Y N Y N 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 N N Y Y N N N Y
    3rd 1.1.3 Y N Y Y N N Y Y N N N Y
    4th 1.0.4 Y N Y Y N N Y Y N N N Y
    5th 1.0.2 Y N Y Y N N Y Y N N N Y
    6th 1.2 PC Y N Y Y N N Y Y N N N Y
    7th 1.02 PC Y N Y Y N N Y Y N Y N Y
    classic 80GB 1.1.2 Y N Y Y N N Y Y N N N Y
    120GB 2.0.1 Y N Y Y N N Y Y N N N Y
    160GB 2.0.4 Y N Y Y N 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 7.0.4 Y N Y Y Y Y Y Y N Y N N
    3 7.0.4 Y N Y Y Y Y Y Y N Y N N
    4 7.0.4 Y N Y Y Y Y Y Y N Y Y N
    mini 7.0.4 Y N Y Y Y Y Y Y N Y Y Y
    air 7.0.4 Y N Y Y Y Y Y Y N Y Y N
    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.

    AM/FM & Internet Radio

    RDS AM/FM Tuner: The Kenwood KMM-BT308U features a built-in RDS AM/FM tuner. The Radio Data System (RDS) feature displays radio broadcast information such as artist & track information when listening to compatible AM/FM stations. You can choose one of four tuning methods: Auto 1 (seek tuning), Auto 2 (cycles through and tunes the selected band's preset stations only with each button press), or Manual Tune. The KMM-BT308U's tuner features 3 FM banks (1, 2, 3) and 1 AM bank for storing presets. The Kenwood KMM-BT308U offers two preset modes.

    • Normal: You can store 6 presets for each AM/FM bank giving you a total of 18 FM presets and 6 AM presets (total of 24).
    • Mix: A total of 6 preset stations can be assigned to the head unit's 6 preset buttons, regardless of AM/FM band. This lets you recall a preset station without switching between bands.
    Note: Not only does the digital media receiver's tuner allow you manually enter your desired presets you can choose to have the unit automatically put stations with good reception in the memory banks automatically; this is a handy feature when traveling.

    Internet Radio Apps: The Kenwood KMM-BT308U allows you to access Pandora and iHeartRadio online music services through your USB-connected iPhone or Bluetooth-connected Android/Blackberry smartphone. Your Apple iPhone must be connected to the KMM-BT308U via the Kenwood KCA-iP102 cable (sold separately, or the cable supplied with your iPhone. Your Android or Blackberry smartphone must support A2DP/ AVRCP/SPP Bluetooth profiles and be paired with the Kenwood KMM-BT308U. Your iPhone, Android smartphone, or Blackberry device will need an active Data Plan account with connection to the Internet via 3G, EDGE, or WiFi.

    • Pandora App (for iPhone/Android/Blackberry): The free Pandora App (either from iTunes Apps, Google Play, or BlackBerry App World) lets you play music from the Pandora music service through the Kenwood KMM-BT308U using your USB-connected Apple iPhone (iOS 5.0+) or Bluetooth paired Android/Blackberry smartphone. The Kenwood KMM-BT308U provides control over the Pandora music service and displays Artist, Album, and Song information. You can select Pandora stations from your station list and sort them by date or alphabetically (A-Z). New stations can be created based on the current songs or artists playing. You can also save 3 Pandora stations as presets. You can also skip song tracks within a station. You can even give songs a thumbs up or thumbs down. An active Pandora account is required.
    • iHeartRadio Link (for iPhone/Android): The free iHeartRadio Link app for Kenwood (either from iTunes Apps or Google Play) lets you play music from the iHeartRadio music service through the Kenwood KMM-BT308U using your USB-connected Apple iPhone (iOS 5.0+), or Bluetooth paired Android smartphone (2.2+). The iHeartRadio music service provides access to more than 1,500 live radio stations from coast-to-coast (including pop, country, urban, rock, talk, and sports). The KMM-BT308U will provide control over the iHeartRadio Link app, as well as display station identification and song/artist information. From the head unit's front-panel controls, iHeartRadio stations can be searched by the following categories (Local, Genre, City, or My Stations). The Local selection provides a list of radio stations in your local listening area. The unit also provides over 22 Genres to choose from (including pop, country, hip-hop, jazz, etc.) to help you find the right radio station for you. In addition, you can search for radio stations by City. Cities can be searched alphabetically (A-Z). You can even store your favorite stations (My Stations) for easier, quicker access. An active iHeartRadio account is required.
    Note: Access to these Internet Radio services will depend on the availability of a cellular and/or WiFi network for purposes of allowing your iPhone or Android/Blackberry smartphone to connect to the Internet. Not supported in Canada and only available in the United States.

    Audio Section

    16 Bit D/A Converter: The Kenwood KMM-BT308U utilizes a 16-bit digital to analog converter for superior sound quality.

    MOSFET Amplifier: The Kenwood KMM-BT308U 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. The power output specs for the KMM-BT308U are as follows:

    • Full Bandwidth Power: 22 watts RMS x 4 channels (at 4 ohms, 20-20kHz, 1% THD)
    • Maximum Output Power: 50 watts x 4 channels

    2Ch/2.5V Preamp Output + Sub Control: The KMM-BT308U features a 2.5-volt stereo preamp output that you can be adjusted from a full-range rear speaker preamp output to a low-pass subwoofer preamp output. The Kenwood KMM-BT308U offers the following subwoofer controls, when you have the unit's preamp output configured as a sub output.

    • Low Pass Filter: The receiver features a built-in Low Pass Filter control for the preamp-output, when the output is set to Subwoofer. You can select from 85 Hz, 120 Hz, 160 Hz, or off.
    • Subwoofer Phase: You can adjust the phase of the subwoofer output between 180-degrees (Reverse) or 0-degrees (Normal).
    • Subwoofer Level: Once the Subwoofer preamp output is activated, you can independently control the subwoofer preamp output level (-15 to +15) from the digital media receiver.

    Speaker Settings: The Speaker Setting function tailors the head unit's audio settings according to the type of speakers in your vehicle. You may select a Speaker Setting of 'SP-Off' (flat/off), 'SP-OEM' (for OEM factory speaker systems), 'SP-6x9/6' (for systems with 6" and 6"x9" speakers), or 'SP-5/4' (for systems with 4" and 5" speakers).

    Preset EQ: Eight EQ curves are preset into memory, allowing you to recall the best preset EQ curve for different types of music. Each preset has its own level settings for bass, midrange, and treble . You can choose from the following preset EQ curves; Rock, Pops, Easy, Top 40, Jazz, Natural, Drive EQ, or User. The Drive EQ mode is an EQ preset that helps reduce road noise. The User mode allows you to manually adjust the head unit's Bass (200Hz) , Midrange (2.5kHz), and Treble (12.5kHz) level from +/- 8dB.

    Note: You can store bass, middle and treble tone settings for each source (Tuner, Aux, USB, iPod, Bluetooth, and Pandora/iHeartRadio).

    Sound Enhancements: The head unit provides further sound enhancements for your car audio system.

    • Bass Boost: The Kenwood receiver features a Bass Boost control that can be set to the following levels (BB1, BB2, BB3, or Off).
    • Loudness: This function enhances low and high frequencies to make the sound clearer lower volumes. There are 3 levels (LV1, LV2, or Off).
    • Sound Reconstruction: When MP3 or WMA files encoded at a low bit rate (less than 96 kbps, 44.1k, 48kHz) are played, the Sound Reconstruction function restores their high frequencies so the sound quality is closer to files encoded at a high bit rate. The processing is optimized for the compression format and the bit rate used. When Sound Reconstruction is Off, the unit plays the original sound stored in the audio file.

    Volume Offset: The level of each source may be independently adjusted to prevent radical leaps in output volume when switching from one source to another. The available settings range from -8 to 0 (-8 to +8 for Aux source).

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

    Display & Remote Features

    Detachable Face: The Kenwood KMM-BT308U features detachable face plate to deter theft. There is no protective face case included. An optional soft face case (142DFC1X, sold separately) can be purchased for this unit. A face-fixing screw is supplied for making the face non-detachable, if desired.

    Single-Line LCD: The Kenwood head unit features a single-line, 13-segment, backlit LCD with white text and black background, plus blue button illumination.

    • 12Hr/24Hr Clock: The head unit can be set to display a 12hr or 24hr clock. The unit also displays the day (Sun, Mon, Tue, Wed, Thu, Fri, or Sat).
    • Display Illumination/Clock Display: With your vehicle's key in the accessory or start position, the head unit continues to display the clock and button illumination during Standby mode. Pressing and holding the source button turns the unit off completely.
    • Brightness & Dimmer: You can dim the LCD and button illumination to better suit the time of day. You can adjust the maximum brightness of the LCD and button illumination from 0-31. The Kenwood logo does not dim.
    Note: This unit features a Demo mode which can be turned On or Off within the menu.

    Wireless Remote Control: The KMM-BT308U comes with an IR remote control (RC-406) for wireless operation of the head unit. The remote will control Audio, USB, iPod, and Tuner functions. It is powered by a single CR2025 3V lithium-cell battery (supplied).

    • Numeric Keypad: The wireless remote control features a numeric keypad (0-9) which allows direct track access of your music tracks & files from USB, as well as AM/FM presets.
    • Attenuator: The digital media receiver features an Attenuator button on the supplied remote control that turns the volume down very quickly with one touch of the button.

    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.

     
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    Kenwood KMM-BT308U Reviews

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    5 out of 5

    Kenwood KMM-BT308U

    Written By Mark B., Fredericktown, MO. on Friday, August 08, 2014
    Crutchfield Customer Review (What's this?)
     
    Overall a good radio
    Pros:
    Operates great
    Cons:
    A little difficult to operate at first.
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    5 out of 5

    great with an iphone

    Written By rx7master, st. louis on Monday, August 04, 2014
    Crutchfield Customer Review (What's this?)
     
    this thing is great. it automatically syncs to my phone when i get in & out. it still answers phone calls on blue tooth, even when its plugged in on USB mode. I like the fact that it doesnt have a CD drive. It just seems like a waste, when I dont use CDs in the car. I appreciate the fact I wasnt forced to pay for the CD capability when I dont plan to use it. It is a great value at around $100
    Pros:
    automatically syncs to iphone when getting in & starting the car.
    Cons:
    none
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    5 out of 5

    Love It!

    Written By RickC, St. Louis area on Monday, July 28, 2014
    Crutchfield Customer Review (What's this?)
     
    Nice and easy install. Everything fit perfect and looks great in the dash. This was a piece of cake my son helped out and could have done it by himself it was so easy.
    Pros:
    Quick, easy, looks great, sounds great.
    Cons:
    none
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    3 out of 5

    First Receiver "only"

    Written By kheros, clermont, fl on Thursday, July 24, 2014
    Crutchfield Customer Review (What's this?)
     
    This is my first receiver only head unit, I must say it has been a HUGE learning curve, the thought of having so many of "your" songs on a pen drive for endless music was intriguing, BUT there are limits to what this device can do as far as my "dreams" were taking me, (16 gig of music at my controls) it doesn't work that way
    Pros:
    I bought this for the Bluetooth mainly, I did want a "no" cd head unit also. the Bluetooth is nice, its works okay, kind of glitch but useable the only thing I have enjoyed!! as I stated before this is my first receiver only unit, I am NEW to this type of usage, it will take a while to get comfortable with the ins and outs of the unit.
    Cons:
    this unit has made me so angry so many times, I have been so upset at first, it cannot handle the large usb thumb drive I put in at first "16gig" the remote would not work or at best want you to throw it out the window!!!!!!!!! but since I have used smaller thumb drives it is more responsive but still the remote is "slow" at times I don't like slow when I press a button I want the results I was expecting!!! period. also the switch from usb, to tuner is painful, not enough letters to complain about!
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    4 out of 5

    Kenwood install - 1985 Porsche 911

    Written By JohnR, Westchester County, NY on Thursday, June 19, 2014
    Crutchfield Customer Review (What's this?)
     
    Been a long-time since I installed my own radio but it was time to re-wire the car and put something new in. For the money, the value of this radio seems to not be beat. Once I got the speaker leads figured out, it went in fairly seamlessly. The sound is good, not great - but an upgrade from before even on the same 30 year old speakers- they are next I suppose.
    Pros:
    Love all the features - paired quickly with BT on my phone and is easy to use to listen to music on my phone. BT phone is nice to have added to 30 year old car - and sound quality is good enough to use with the Targa top off!
    Cons:
    Bought the "scratch n dent" - wires on the back seemed shorter than I would have expected. Don't know if this was due to them being cut to go in the box or a reality of all units. Small buttons - especially on remote which is nearly impossible to use. Connection to remote also doesn't seem smooth - but who uses it anyway?
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    4 out of 5

    Good job!

    Written By Metal925, The valley on Sunday, June 01, 2014
     
    Might as well have a USB cord attached to the autos permanently. This charges my phone and lets me play my music, and gets the local radio I like with pretty good quality to distance. The blue tooth is a necessity. It's still not intuitive to use, I think the designers need to do ride alongs with more people. But it's a good item for the price.
    Pros:
    Blue tooth, USB.
    Cons:
    Design complications
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    4 out of 5

    Kenwood KMM-BT308U

    Written By joe b, dalls on Thursday, May 29, 2014
    Crutchfield Customer Review (What's this?)
     
    I like the hands free Bluetooth phone part for a teenage Grandson
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    3 out of 5

    finnicky eq

    Written By Aly, Parishville NY on Thursday, May 29, 2014
    Crutchfield Customer Review (What's this?)
     
    My husband installed and set it up with ease, but I just can't get my Bluetooth to stay connected. I need to reconnect every time I get in the car. It looks great, but that's not everything.
    Pros:
    Looks modern and flashy, and has the features that I was looking for.
    Cons:
    Sub-par sound quality and Bluetooth connection spotty.
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    5 out of 5

    Quality deck

    Written By EricP, Houston, TX on Thursday, May 15, 2014
    Crutchfield Customer Review (What's this?)
     
    Purchased for and installed in my son's vehicle so he could play music from his phone and have safe handsfree communications. Installed in a snap and worked flawlessly after contacting Crutchfield. The deck is set by Kenwood to only operate on the front speakers, and I had to call support to find where to switch it in the menu. After the great help from Crutchfield support, it sounds great.
    Pros:
    Low price, great sound and ease of install.
    Cons:
    Menu was a little difficult to navigate.
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    4 out of 5

    Does what it's supposed to

    Written By Jondster, Grand Rapids, Mi on Wednesday, May 07, 2014
    Crutchfield Customer Review (What's this?)
     
    Installed in a 2002 C5 Corvette, used with the standard Delco Bose speakers. I bought this to get some digital media flexibility and hands-free phone usage. Besides, who needs CDs rolling around loose in a sports car ? The install was easy (for a first-timer). The sound quality is good enough to demonstrate that a powered subwoofer is needed with Bose speakers.
    Pros:
    Easy install. Accepts many digital formats - I prefer a 16GB flash drive, but my cell and pad work nicely also.
    Cons:
    If you don't RTFM (read the manual) operation may be a little confusing for a while. LED readout is difficult in high ambient light situations (like a convertible).
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    3 out of 5

    It's definitely not high end.

    Written By Anonymous, Orlando on Tuesday, April 29, 2014
    Crutchfield Customer Review (What's this?)
     
    This is a decent HU nothing more, nothing less. Has a good sound and a decent look. Bought this to replace a jvc that was stolen from my car. The bluetooth connectivity is shotty at best and doesn't play through to my 4 channel or monoblock...which defeats the purpose since I get no sound.
    Pros:
    Cheap Good sound (Aux) Slim fit
    Cons:
    Bt is terrible Only 1 preout No customization
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    3 out of 5

    not bad...

    Written By great price.. not a bad cheap, Culpeper va on Monday, April 21, 2014
    Crutchfield Customer Review (What's this?)
     
    Not bad for what you pay for. Really wanted hands free phone.
    Pros:
    Price!
    Cons:
    No back end plug in for iPhone.
    Was this review helpful?    Yes | No
    "Coolness Factor"
    Build Quality
    Ease of Use
    Sound Quality
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    5 out of 5

    Kenwood in dash

    Written By Chris, Slidell, la on Friday, April 04, 2014
    Crutchfield Customer Review (What's this?)
     
    Was easy to install and easy to use. Have everything you for a radio.
    Pros:
    Was easy to setup and figure out once installed. Really like the Bluetooth feature
    Was this review helpful?    Yes | No
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    Build Quality
    Ease of Use
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    4 out of 5

    Kenwood BT308U

    Written By Mike, Ohio on Thursday, April 03, 2014
    Crutchfield Customer Review (What's this?)
     
    This was a nice upgrade to my 06 Wrangler. Install was simple with the Crutchfield sheet. The Bluetooth works well but pairing is a bit cumbersome. Sounds good, works great with my iPod touch thru the USB cord, and has plenty of nice features for the price.
    Pros:
    Price and overall performance.
    Cons:
    Operating instructions/pairing instructions kind of vague and confusing. Took me a few tries to pair and this is my 3rd Bluetooth experience.
    1 out of 1 people found this helpful
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    Build Quality
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    5 out of 5

    Perfect for a motorcycle

    Written By James J., Cincinnati Ohio on Thursday, April 03, 2014
    Crutchfield Customer Review (What's this?)
     
    This is the best head unit I have ever had. I rarely use cds especially when riding a motorcycle. To able to use my android phone as a mp3 player with bluetooth audio streaming is a blessing. Plus I can keep my phone charged, I didn't have to install a cirgerrate lighter for that. The sound quality is crisp and clean. I play alot of rnb hip hop. No base distortion once I got my settings right. So far this unit has drawn alot of attention from fellow bikers I ride with. Installation was easy. This is a perfect unit for rider with a fairing. Thanks to the Crutchfield audio specialist that recommend it. When I called I had already had audio system in mind for my bike. Once I gave an explanation of what I wanted and needed it was a totally different audio system thank u Crutchfield.
    Pros:
    It is perfect for a fairing motorcycle. With audio bluetooth u can set your mp3 play and ride
    Cons:
    Would not recommend for an individual still attached to cds
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    4 out of 5

    Kenwood Radio

    Written By TopDogg, Yuma, AZ on Friday, March 21, 2014
    Crutchfield Customer Review (What's this?)
     
    Awesome head unit, only downfall is that the screen words are a bit hard to read. it sounds great and looks nice. Would definitely recommend to anyone looking for a non CD player. USB, Bluetooth, aux and radio / phone use is excellent.
    Pros:
    great price, shipping and east to install
    Cons:
    Slightly Difficult to read display screen
    1 out of 1 people found this helpful
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    3 questions already asked

    What are the physical dimensions of this unit? I am looking for one smaller than std. 7" deep. Thanks, >Barry [ Barry  Aug 21, 2014 ]
    6 answers
    • I thought it was standard. It is installed and I'd have to take it back out to measure it. Sorry. [ Cynthia   Aug 22, 2014 ]
    • It's around 4" deep, lots of space behind it. Great receiver. [ James   Aug 22, 2014 ]
    • I don't know, I'd have to pull it from the car to measure. But I recall it being substantially shorter than the stock 2002 GM/Delco AM/FM CD player. Without need for room for a CD/DVD, it can be a lot shorter. I wouldn't be surprised if it were under 7" - but I'm sure you need a confirmed answer. Sorry. It'd sure be easier for Crutchfield to take one out of the box to measure - or at least easier than pulling it out of the dash of a corvette [ Jonathan   Aug 22, 2014 ]
    • Currently it's allready mounted in my jeep so I can't measure it. But I want to say it was about 5" deep total. I'm very pleased with it. [ TIM   Aug 22, 2014 ]
    • Hmm. I can't be exact. But it is surely less than 7inchs in depth. I'd say around 4 1/2" but not sure [ MATTHEW   Aug 22, 2014 ]
    • I already installed the unit so I dont remember the exact dimension. However I remember it being half the size of an average radio. This is due to it not having a CD player. Hope that helps. [ Kevin   Aug 22, 2014 ]
    I am curious if anyone knows if this unit can support a usb external drive OR it is limited to flash drives only. If so, what size on the either the external or the flash? [ Gregory  Aug 12, 2014 ]
    3 answers
    • I've attached a 8G Sandisc MP3 player and it works fine. (I don't know if that is what you meant.) It just reads the files directly though. I can't control it via the MP3 player. You can also use it to charge your phone apparently. I tried and it works. [ Cynthia   Aug 22, 2014 ]
    • Ditto on Schyler Must be formatted FAT [ Jonathan   Aug 22, 2014 ]
    • My 32 gb flash drive works fine on it I don't see why an external hard drive wouldn't though as long as it is formatted correctly [ SCHYLER A   Aug 12, 2014 ]
    Which speakers work best with this receiver? [ Gary  Mar 30, 2014 ]
    1 answer
    • I forwarded your question to an Advisor and they responded with the following: With the Kenwood #113KMBT308's power of 22 watts of RMS per channel, we have a whole bunch of great-sounding speakers that will work very well. However, I must assume that you are replacing factory speakers, and knowing some information about your vehicle would help determining which of our speakers will fit your vehicle. To see what speakers will fit, be sure to enter your vehicle into our Online Vehicle Selector. Once you have entered your vehicle information, the car speaker and receiver selections will automatically be filtered to show only those items that fit the dash in your car or a particular speaker location. You can use product category links to find the items you are looking for. Using the Online Vehicle Selector for your order also ensures that you will get the installation accessories you are entitled to, so you can start enjoying your new gear sooner. If you would like to discuss further you can contact an Advisor directly by phone (1-800-324-9695) or online chat. [ Krissy Staff  Apr 02, 2014 ]

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    For a more in-depth review and enhanced detailed information on the Kenwood KMM-BT308U, please visit the Crutchfield website product page (/ISEO-rccbcspd/p_113KMBT308/Kenwood-KMM-BT308U.html ).

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