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Sony MEX-BT4000P

CD receiver

95 Reviews

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Overview

Our take on the Sony MEX-BT4000P

Sony's MEX-BT4000P CD receiver employs Bluetooth® technology that gives you hands-free calls in your car with your compatible phone. You'll hear your callers through your car's speakers, and answer just like they're sitting next to you. The result? You'll drive more safely with your hands on the wheel and your phone stashed away. Plus, if you've got a smartphone or other device with Bluetooth, you can stream your music to the receiver without having to plug in.

Built-in Bluetooth

Sony's MEX-BT4000P CD receiver employs Bluetooth® technology that gives you hands-free calls in your car with your compatible phone. You'll hear your callers through your car's speakers, and answer just like they're sitting next to you. The result? You'll drive more safely with your hands on the wheel and your phone stashed away. Plus, if you've got a smartphone or other device with Bluetooth, you can stream your music to the receiver without having to plug in.

Front USB input

The front-panel USB input features Sony's 1-wire connection® — plug in your player and enjoy convenient control of the music on your iPod® or iPhone®. Sony's search tools whip through your files to find the tunes you want quickly and easily. You'll find Jump Mode particularly handy if you've got a large music library, as it allows you to jump through your playlist in 10% increments.

Sony MEX-BT4000P

Pandora®

You'll be able to cruise to your favorite Pandora® Internet radio stations too. With your iPhone, Android, or Blackberry phone, you can browse through your favorite stations and rate songs from the receiver's controls.

Soundshaping tools

If you're into tweaking your sound, you'll find a host of tools in Sony's Advanced Sound Engine. You can adjust the overall tone with the EQ7 7-band equalizer, then use tools like Listener Position calibration, Dynamic Loudness, and Rear Bass Enhancer to customize your listening experience to your own tastes. And speaking of customization, you can choose from wide selection of colors for the display on this Sony.

More listening options

You can add a SiriusXM satellite radio tuner to enjoy programming variety and commercial-free music. Use the handy front-panel auxiliary input to connect a portable satellite radio, MP3 player, or another audio source.

Want to keep your car's steering wheel audio controls?
In most vehicles, you can use this adapter to connect your vehicle's steering wheel controls to this Sony stereo. Connect a few wires, then program the adapter for your particular car and the Sony, and you'll retain the convenience of your steering wheel controls.

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.

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.

Awesome!

Anonymous, Albuquerque, New Mexico

Featured Video:

What's in the Box:

  • AM/FM CD receiver (with 10-amp fuse inserted into chassis)
  • Face
  • Sleeve (installed)
  • Trim ring (installed)
  • Wiring harness
  • Wireless remote control (RM-X231)
  • CR2025 Lithium battery (installed in remote)
  • Microphone (with attached 12' cord terminated by a right-angle male 3.5mm connector)
  • Visor bracket
  • Two-sided tape
  • 2 Radio removal tools
  • 4 Flathead ISO-mount screws
  • Face fixing screw
  • Operating Instructions (Eng/Fre)
  • Installation/Connections sheet (Eng/Fre)
  • US Limited Warranty sheet
  • Canada Consumer 1 Year Warranty
  • Face fixing screw note

Product Highlights:

    General features:
    • CD receiver with AM/FM tuner
    • built-in amplifier (17 watts RMS CEA-2006/52 peak x 4 channels)
    • built-in Bluetooth for hands-free calling and audio streaming
    • plays CDs, CD-Rs, and CD-RWs, including discs loaded with MP3, WMA, and AAC music files
    • Pandora® control for iPhone®, Android, and Blackberry
    • detachable faceplate with variable illumination and button colors
    • remote control
    Audio features:
    • EQ7 7-band equalizer with 7 preset sound curves
    • Rear Bass Enhancer
    • Dynamic Loudness
    • DM+ sound restoration
    • listener position calibration
    • high- and low-pass filters
    Expandability:
    • built-in iPod/iPhone controls with USB connection
    • compatible with SiriusXM satellite radio tuner
    • inputs: front USB and auxiliary inputs
    • outputs: 6-channel preamp outputs (2-volt front, rear, sub)
    Other info
    Reviews

    Sony MEX-BT4000P Reviews

    Average Customer Review(s):

    (95 Reviews)
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    Details

    Hands-on research

    Features and Specs

    Expandability
    AUX Input Front
    Audio/video Input ---
    USB Input Front
    CarPlay No
    Android Auto No
    Siri Control No
    Android Control USB MSC/MTP + Bluetooth A2DP/AVRCP + Pandora
    Memory Card Slot USB memory
    Bluetooth Compatible Built-in
    Satellite Radio Ready SiriusXM
    HD Radio No
    Navigation ---
    iPod Compatibility
    Full size Classic/5Gen
    Nano Nano7/Nano6/Nano5/Nano4/Nano3/
    Touch Touch5/Touch4/Touch3/Touch2/To
    iPhone Phone5/Phone4S/Phone4/Phone3GS
    General
    CEA-2006 Compliant Yes
    RMS Power Output 17 watts
    Peak Output 52 watts
    RMS Power Bandwidth 20-20kHz
    Preamp Outputs 6-channel
    Sub Preamp Outputs Yes
    Switchable Rear Preamp Outputs No
    Video Screen No
    Preamp Voltage 2 volts
    Display Color Variable
    Key Button Color Variable
    EQ Bands 7
    Wireless Remote Yes
    Steering Wheel Control Compatible Adapter required
    Parts Warranty 1 Year
    Labor Warranty 1 Year
    Tuner
    FM Sensitivity 8 dBf
    European Tuning No
    Seek/Scan Seek
    Radio Data System Yes

    Product Research

    Built-in Bluetooth
    USB/iPod/Aux Connectivity
    Pandora App (for iPhone/Android/Blackberry)
    AM/FM Tuner + SiriusXM Ready
    Disc Playback
    Audio Section
    Display Features
    Remote Control

    Built-in Bluetooth

    Bluetooth Technology: The Sony MEX-BT4000P 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.

    Bluetooth Profiles: 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 (Hands Free Profile), PBAB (Phone Book Access Profile).
    • Audio Streaming: A2DP (Advanced Audio Distribution Profile), AVRCP (Audio/Video Remote Control Profile).

    Pairing: Up to 9 phones or audio devices can be registered with the MEX-BT4000P (only one device can be used at a time). The unit can be set to automatically reconnect to the last connected Bluetooth device when the ignition is turned on.

    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 Sony MEX-BT4000P.  Please visit Sony eSupport for a complete list of compatible Bluetooth enabled phones.

    External Microphone: The MEX-BT400P 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 level 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 comes with a mounting bracket which can be clipped to your vehicle's sun-visor or taped to your dash. The external microphone measures 0.465" (diameter) x 1.425" (depth). There is no integrated front-panel mic.

    Hands-Free Communication: The Sony MEX-BT4000P supports Bluetooth hands-free communication for your Bluetooth enabled cell-phone. Bluetooth hands-free communication helps to minimize distraction while driving by allowing you to control your mobile phone from the head unit, so you don't have to touch your mobile phone. The controls of the MEX-BT4000P can be used to dial a number, answer an in-coming call, or end a call. The unit also features 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 Calls: Incoming calls can be answered manually or automatically (between 3-10 seconds) through the Sony head unit, while the ring tone is output from your car speakers and the caller's name or phone number is displayed on the head unit's LCD. Incoming calls can also be rejected if desired.
    • Dialing a Number: Using the MEX-BT4000P, you can dial a phone number in one of the following ways.
      • Entering Phone #: Allows you to manually dial a phone number using the unit's control dial.
      • Redial: Use to easily redial the last number you called.
      • Preset Dial: You can store up to 6 contacts in the preset dial for quick dialing.
      • Phone Book: You can store up to 1,000 contacts in the unit's phone book. Up to a 40 character name can be input for each contact.
      • Call History: The unit will store the last 20 calls, allowing you to select a previous phone number quickly from the list.
      • Voice Dial: You can make a call using the voice tags stored on your connected cellular phone.

    SMS Indicator: The SMS indicator informs you of any incoming or unread SMS messages on your paired Bluetooth-enabled smartphone. You will still need to view the text message from your phone, as well as create and send text messages from your phone.

    Wireless Audio Streaming (with Meta Data Display): The Sony MEX-BT4000P also supports wireless audio playback (AD2P) and control (AVRCP) of a Bluetooth enabled audio player or smartphone. The MEX-BT4000P will be able to control your stored music's basic playback functions; such as Play/Pause, Previous/Next Track, Fast-Forward/Reverse, and Shuffle/Repeat. The head unit will also display your stored music's song information; such as Artist name, Song title, and Album label. The MEX-BT4000P also supports audio streaming of music apps (such as iHeartRadio, SiriusXM, Last.fm, Rhapsody, & Slacker) , but without control or metadata. You will continue to use your Bluetooth enabled smartphone to view and control streaming music apps.

    Note: 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.

    Volume Adjustment: You can adjust the volume level of your paired Bluetooth audio device from -8 to +18dB to match volume level output of other sources.

    USB/iPod/Aux Connectivity

    USB Port: The receiver's front-panel Type-A USB port can be used for plugging in a (MSC) Mass Storage Class or MTP (Media Transfer Protocol) type USB device. The head unit can play music files stored on the USB device in MP3, WMA, or AAC formats (up to 320 kbps). The head unit can recognize up to 128 folders with 500 tracks each when connected to a USB Mass Storage Device. The MEX-BT4000P offers the following USB search, playback, and display functions.

    • Search Modes:
      • Quick-BrowZer: allows you to search for a track on a connected USB device easily by category (Genre, Artist, Album, or Playlist)
      • Jump Mode: gets you closer to the song you want by allowing you to fast forward through a music category in 10% increments
      • Zappin: play music (files or folders) in 6, 15, or 30-second clips until you find the song you are looking for on your connected USB device
    • Playback Modes:
      • Repeat: repeat a single track or repeat an entire album
      • Random: shuffle all tracks or a specific album
    • Display Information:
      • Numeric Text: track number and elapsed playing time
      • Alphanumeric Text: song title, artist name, and album label

    Note: This unit cannot recognize USB devices via a USB hub. Not all MP3, WMA, AAC files may playback due to file variations. Copyright protected ACC-LC files cannot be played back.

    USB 1-Wire iPod/iPhone Control:  The MEX-BT4000P's front-panel USB port allows you to connect your iPod/iPhone via a single cable (iPod dock connector-to-USB cable; not included with the head unit). This USB 1-Wire for iPod/iPhone connection lets you directly connect, charge, & control select iPod/iPhones via the USB jack on the front of the unit, as well as view metadata like song title & artist name on the front display.

    • Bypass iPod DAC: The USB connection allows your iPod/iPhone's stored music to be loaded instantly to the head unit and sound quality to be maximized through the head unit's 24-bit D/A converter (bypassing iPod/iPhone DAC), allowing for a Signal-to-Noise ratio up to 120dB.
    • Information Display: The head unit will display your iPod/iPhone's music file information, including - Track #, Elapsed playing time, Song title, Artist name, and Album label.
    • Music Navigation: You can choose to control the iPod/iPhone from the head unit or from your iPod/iPhone's clickwheel or touchscreen.
      • Quick-BrowZer: the Quick-BrowZer feature allows you to browse your iPod/iPhone's music library by Artist, Album, Song, Genre, Playlist, or Podcast
      • Alphabetical Search: search within a specific Quick-BrowZer category or All tracks alphabetically (A-Z)
      • Zappin: with the Zappin feature, you can play music tracks & albums in 6, 15, or 30-second clips until you find the song you are looking for on your connected iPod/iPhone
      • Repeat & Shuffle Play: Repeat (Track/Album) & Shuffle (Album) playback modes
    • Charging: While connected and the ignition switch is set to ACC or ON, the head unit's USB connection will power and charge your iPod/iPhone. If your iPod/iPhone has no initial battery charge, then this unit will not recognize it.

    Note: If you have an iPod nano (7th gen), iPod touch (5th gen), or iPhone 5; use the Lighting-to-USB cable that came with your Apple device to connect to the head unit.

    iPod/iPhone Compatibility Chart: The Sony MEX-BT4000P is "Made for iPod/iPhone" compatible and supports the following iPod/iPhone model features (as of 9/25/2012):

    iPod Model Generation Tested Version Media Type Control Type Display Type Pandora app Charge
    Audio Video Head Unit iPod App mode Artist/Song Text Track Info
    dock connector 3rd N/A N N N N N N N N N
    clickwheel
    color
    4th N/A N N N N N N N N N
    mini 1st N/A N N N N N N N N N
    2nd N/A N N N N N N N N N
    video 5th 1.3 Y N Y N N Y Y N Y
    classic 80GB 1.1.2 Y N Y Y N Y Y N Y
    120GB 2.0.1 Y N Y Y N Y Y N Y
    160GB 2.0.4 Y N Y Y N Y Y N Y
    nano 1st 1.3.1 Y N Y N N Y Y N Y
    2nd 1.1.3 Y N Y Y N Y Y N Y
    3rd 1.1.3 Y N Y Y N Y Y N Y
    4th 1.0.4 Y N Y Y N Y Y N Y
    5th 1.0.2 Y N Y Y N Y Y N Y
    6th 1.1 PC Y N Y Y N Y Y N Y
    7th 1.2 Y N Y Y N Y Y N Y
    touch 1st 2.2.1 Y N Y Y N Y Y N Y
    2nd 4.2.1 Y N Y Y N Y Y N Y
    3rd 5.1.1 Y N Y Y N Y Y N Y
    4th 6.0 Y N Y Y N Y Y N Y
    5th 6.0 Y N Y Y N Y Y N Y
    iPhone 2G 3.1.3 Y N Y Y Y Y Y Y Y
    3G 4.2.1 Y N Y Y Y Y Y Y Y
    3GS 5.1.1 Y N Y Y Y Y Y Y Y
    4 6.0 Y N Y Y Y Y Y Y Y
    4S 6.0 Y N Y Y Y Y Y Y Y
    5 6.0 Y N Y Y Y Y Y Y Y
    iPad 1 5.1.1 Y N Y Y Y Y Y Y N
    2 6.0 Y N Y Y Y Y Y Y N
    3 6.0 Y N Y Y Y Y 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.

    Front-Panel Auxiliary Input: A front panel stereo 3.5mm mini-jack is provided to allow the connection of a portable audio source. Just connect your portable digital music player to this unit, and you can listen to the audio from the portable player through the speakers in your mobile audio system. The volume level of the auxiliary input is adjustable from -8 to +18 dB to compensate for any difference between the unit and your portable device. The aux input can be deactivated in the menu, so it does not appear as an available source.

    Pandora App (for iPhone/Android/Blackberry)

    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 Sony MEX-BT4000P CD receiver lets you playback and control the Pandora Internet Radio music service that is being streamed to your Apple iPhone, Android smartphone, or BlackBerry. Your iPhone, Android, or BlackBerry 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.

    • Pandora App for iPhone: The Sony MEX-BT4000P provides complete access to your Pandora account using your iPhone, via the head unit's front-panel USB port. To access Pandora you must have an Apple iPhone (iOS3 or later) with the latest version of the Pandora App from Apple's iTunes App Store.
    • Pandora via Android or BlackBerry: The Sony MEX-BT4000P lets you playback and control Pandora Internet Radio streamed from your Android or BlackBerry smartphone, via Bluetooth (no hard-wired connection required). To access Pandora from the Sony head unit, your Bluetooth-enabled Android or BlackBerry smartphone must have the latest version of the Pandora App from the Android Market or the BlackBerry App World. Your Android or BlackBerry smartphone must support A2DP, AVRCP, and SPP Bluetooth profiles.

    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.

    Pandora Control: The Sony MEX-BT4000P will provide control over the Pandora music service streamed to your USB-connected iPhone or Bluetooth-enabled Android or BlackBerry smartphone. 

    • Station List: You can select Pandora stations from your Station List by date or alphabetically (A-Z).
    • QuickMix: QuickMix allows you to listen to songs played on one or more Pandora stations in your Station List randomly. You will need to edit your QuickMix station selections on the phone before connection.
    • 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 Sony MEX-BT4000P will display Artist, Album, & Song information provided by the Pandora app on your iPhone, Android, or BlackBerry smartphone.

    AM/FM Tuner + SiriusXM Ready

    Digital Clarity Tuner: The Sony MEX-BT4000P is equipped with a Digital Clarity Tuner for clear AM/FM stereo sound with digital processing technology.

    RDS: The Radio Data System (RDS) feature displays radio broadcast information such as artist & track information when listening to compatible AM/FM stations.

    Preset Stations: The radio features 5 memory bands to store and receive AM/FM stations. You can store up to 6 presets in each in band (FM 1-3/AM 1-2), for a total of 18 FM presets and 12 AM presets.

    Best Tuning Memory (BTM): This feature automatically selects stations with the best signals within the selected band (FM 1-3), AM 1-2) & stores them in order of their frequency.

    Manual/Seek Tuning: The MEX-BT4000P allows you to manual tune or seek tune AM/FM stations.

    • Manual Tuning: You can manually tune & find your favorite radio stations one by one.
    • Seek Tuning: You can use the seek button to help you search quickly through the available AM/FM stations.

    Local Mode: In the Local Seek Mode, the unit will only tune in stations with very strong signals during Seek tuning.

    Mono Mode: The Mono Mode allows you improve poor FM reception by selecting a monaural signal instead of a stereo signal.

    SiriusXM Ready: The Sony MEX-BT4000P 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
    • Channels containing unsuitable content for children can be blocked

    Note: A separate SiriusXM Satellite Radio subscription is required (operates on the XM Network). If you already have a Sirius Satellite Radio subscription, this radio cannot be added as a discounted second unit. If you have an existing XM Satellite Radio subscription, you can add this unit as a discounted second unit.

    Disc 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 (12cm only).

    MP3/WMA/AAC Playback: The Sony MEX-BT4000P allows you to playback CD-Rs or CD-RWs loaded with MP3, WMA, or AAC songs (up to 320 kbps) recorded in ISO 9660 level 1 or 2, Joliet/Romeo, or Multi-Session. The MEX-BT4000P can support up 150 folders, and a combined 300 folders and files on a disc. The head unit will also display song information for MP3, WMA, and AAC music files (Joliet: up to 32 characters, Romeo: up to 64 characters).

    Note: Not all MP3, WMA, AAC files may playback due to file variations. Copyright protected ACC-LC files cannot be played back.

    Compressed Audio Display Information: The CD receiver can display the following CD-TEXT or ID3/WMA-tag information - Track number, Elapsed Playing Time, Song Title, Artist Name, or Album Label.

    Quick-BrowZer: The unit's Quick-BrowZer feature allows you to search for a track on a MP3/WMA/AAC disc easily by category (Genre, Artist, Album, or Playlist).

    Jump Mode: Jump Mode gets you closer to the song you want by allowing you to fast forward through a music category in 10 percent increments.

    Zappin: With the Zappin feature, you can play music (files or folders) in 6, 15, or 30-second clips until you find the song you are looking for on your CD.

    Off Insert/Eject: A CD disc can be inserted or ejected with the power off. The head unit will automatically begin disc playback, when a disc is inserted with the receiver set to a different source or powered off.

    Auto Reload: The CD player will automatically reinsert the disc if it's ejected, but not removed for 20 seconds or more.

    Mounting Angle: For proper CD playback, this unit must be mounted between 0 (horizontal) and 45 degrees

    Audio Section

    True Fidelity Sound Construction: The Sony MEX-BT4000P CD receiver features a newly developed sound processor for less distortion, an S-MOSFET IC for smooth signal transmission, and a large-sized capacitor for deep bass sound.

    Dynamic Reality Amp: The MEX-BT4000P is equipped with Sony's Dynamic Reality Amp to produce 3 dimensional sound staging for more realistic sound inside your vehicle.

    24 Bit D/A Converter: The Sony MEX-BT4000U utilizes a 24-bit digital to analog converter for superior sound quality.

    CEA2006 Compliant Amplifier: The power specifications for the Sony MEX-BT4000P 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 MEX-BT4000P are as follows:

    • Continuous Power Output: 17 watts RMS x 4 channels (at 4 ohms, 20Hz-20kHz, 1% THD-N)
    • Peak Power Output: 52 watts x 4-channels (208 total watts)

    Three Pairs Of 2V Preamp Outputs: The MEX-BT4000U contains three pairs of 2-volt RCA preamp outputs; a front channel pair, rear channel pair, and subwoofer channel pair. The front and rear channel preamp outputs can be faded. The subwoofer preamp output is non-fading.

    Subwoofer Controls: The unit's subwoofer features a low pass filter with a selectable cut-off frequency of 50Hz, 60Hz, 80Hz, 100Hz, 100Hz, 120Hz, or Off. You can also adjust the slope (1/2/3) of the high-pass crossover. You can adjust the subwoofer preamp output's volume level independently from the head unit's volume control from -10 to +10 in 1dB increments. In addition, you can select the phase of the subwoofer output from Normal or Reverse.

    High-Pass Filter: The front and rear speaker outputs offer a selectable high-pass crossover frequency of 50Hz, 60Hz, 80Hz, 100Hz, 100Hz, 120Hz, or Off. You can also adjust the slope (1/2/3) of the high-pass crossover.

    Advanced Sound Engine: Sony's Advanced Sound Engine creates an ideal in-car sound field with digital signal processing. Advanced Sound Engine contains the following features: EQ7, Listening Position, DM+ Advanced, Rear Bass Enhancer, and Dynamic Loudness.

    • EQ7: You can select an equalizer curve from eight music types - Xplod, Vocal, Edge, Cruise, Space, Gravity, Custom, or Off (Flat). The Custom EQ7 mode allows you to make your own equalizer settings. You can adjust the level (+/-6dB) of seven different frequency bands - Band1 (63Hz), Band2 (160Hz), Band3 (400Hz), Band4 (1kHz), Band5 (2.5khz), Band6 (6.3khz), and Band7 (16.0kHz).
    • Listening Position: This unit can change the localization of sound by delaying the sound output from each speaker to suit your position, and simulate a natural sound field with the feeling of being in the center of it wherever you sit in the car. You can choose from Front Right, Front Left, Front Center, or Off. You can even fine-tune the listening position from +/-3" of center. You can also set the subwoofer distance of the subwoofer to Near, Normal, or Far.
    • RBE (Rear Bass Enhancer): RBE enhances the bass sound by applying the low-pass filter setting to the rear speakers. This function allows the rear speakers to work as a subwoofer even if there is no subwoofer connected.
    • Dynamic Loudness: Dynamic Loudness refers to compensating for volume level and signal gain.
    • DM+ Advanced: DM+ Advanced improves digitally compressed sound by restoring high frequencies lost in the compression process (works only for USB).

    Automatic Level Optimizer: Automatic Level Optimizer analyzes each track's playback level & adjusts the output level to optimize transitions between tracks & sources.

    Beep Tone: 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 MEX-BT4000P features a detachable face for theft prevention. A face-fixing screw is supplied for making the face non-detachable, if desired. No face case is included with this unit. An optional soft face case (142DFC1X, sold separately) can be purchased for this unit.

    Caution Alarm: If you turn the ignition switch to the Off position without detaching the front-panel, the caution alarm will sound for a few seconds. The alarm will only sound if the built-in amplifier is used.

    Dynamic Color Illuminator (35,936 colors): Dynamic Color Illuminator lets you match the head unit's LCD & button illumination to complement your existing vehicle lighting components. With selectable Sound Synchronization, the timing of the color change is synchronized with the audio source. You can select from 12 preset colors (red/amber/m-amber/yellow/white/light green/green/light blue/sky blue/blue/purple/pink), customized color, & 5 preset patterns (rainbow/ocean/sunset/forest/random). The unit's Dynamic Color Illuminator offers the following advance features.

    • Day/Night Color Mode: You can register a customize color for the unit's display and buttons for day & night time driving.
    • Sound Synchronization: The color changes according to synchronization of playing music. When you select a preset pattern sound synchronization becomes effective.
    • White Menu: You can display the menu more clearly (White text) without concern for the unit's other color settings.
    • Start White: When you power-on the head unit, the color of the unit's display and buttons turn white and then the color changes to your chosen customize color. You can enjoy this effect whenever the source is turned on.

    Motion Display: This feature shows moving patterns and a spectrum analyzer on the display when turned on.

    Auto Scroll: This feature allows long displayed items to scroll automatically across the display when the track is changed on a disc.

    Display Illumination/Clock Display: Pressing the Source/Off button once will switch sources. Pressing and holding the Source/Off button for one second will turn off audio output, but the clock display and button illumination remain on. To turn the unit off completely, you must press and hold the Source/Off button for two seconds.

    Dimmer: To change the brightness of the display you can set the MEX-BT4000P to one of three dimmer modes - Dimmer Auto (dims the display automatically when you turn your vehicle's lights on), Dimmer Off (deactivates the dimmer), and Dimmer On (display always dim).

    Auto Off: When installing in a vehicle without an accessory power wire at the radio location, you can set the unit to turn off all lighting a set amount of time after you turn the power off. The Auto Off feature can be set to 30 seconds, 30 minutes, 60 minutes, or No.

    Demo Mode: The head unit's demo mode can be turned On or Off.

    Remote Control

    Wireless Remote Control: The head unit comes supplied with an IR wireless remote control (RM-X231) for easy operation. The included wireless remote allows you to control the basic functions (not Bluetooth) of the Sony head unit while keeping your eyes on the road.

    Steering Wheel Remote Compatibility: The head unit features an OEM steering wheel remote control input on the rear of the unit 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.

    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 verify what’s in the box, 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.

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