Built-in Bluetooth
iPhone/iPod Integration
Internet & AM/FM Radio
USB/Aux Playback
Audio Section
Remote Control
Display Features

Built-in Bluetooth

Bluetooth 4.2: The Kenwood KMM-BT228U is equipped with built-in Bluetooth (ver. 4.2) 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 and be able to interpret certain profiles. This unit is compatible with the following Bluetooth Profiles:

• Hands-Free Communication: HFP 1.7 (Hands Free Profile), PBAB 1.0 (Phone Book Access Profile).
• Audio Streaming: A2DP 1.2 (Advanced Audio Distribution Profile), AVRCP 1.6 (Audio/Video Remote Control Profile).

SSP & USB Pairing: With Secure Simple Pairing (SSP), you can easily pair a Bluetooth enabled phone to the Kenwood KMM-BT228U without having to enter pin codes or go through complicated settings. You can even pair your Apple iPhone (iOS 5+) by simply connecting it to the Kenwood head unit via USB and following a single prompt on the head unit's display. You can pair up to five Bluetooth-enabled devices to the Kenwood head unit. When an already paired Bluetooth device is in close proximity to the receiver, the auto connection function automatically pairs the two units.

• Dual Phone Connection: Thanks to the Dual Phone Connection feature, two Bluetooth-enabled phones can remain connected to the Kenwood receiver. This means you can an answer an incoming call from either phone from the head unit. Also, both of your phone's contact lists are downloaded to the receiver. To make a call from one of the phones using the Kenwood receiver, you simply have to select Phone 1 or Phone 2 on the head unit's front-panel.
• Music Mix: The new Music Mix feature allows five Bluetooth audio source devices to be connected to the Kenwood receiver at one time, so you can switch between Bluetooth playback sources a lot easier and quicker. While "BT Audio" source is selected on the head unit, you can simply press the music playback button on your connected Bluetooth source devices to switch between devices and begin music playback. However, you cannot stream audio from two different Bluetooth audio source devices at the same time or combine music libraries or playlists from two different connected devices.

Bluetooth Hands-Free Communication: The head unit supports Bluetooth hands-free communication for your Bluetooth enabled mobile phone. The controls of the KMM-BT228U 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-BT228U 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-BT228U, you can dial a phone number in one of the following ways:
  • Enter Phone #: Allows you to directly dial a phone number up to 32 digits from the head unit's control knob or remote control.
  • Preset Dial: Allows you to register up to 6 phone numbers for quick dialing. The preset numbers can be accessed from the head unit's front-panel controls.
  • Phone Book: You can download phone book data from your mobile phone to the KMM-BT228U. You can then dial a contact within the phonebook from the head unit's front-panel controls. Contacts are categorized as Home, Office, Mobile, Other, or General.
  • 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.

Wireless Audio Streaming: The Kenwood KMM-BT228U supports wireless audio playback (AD2P) and control (AVRCP) of a Bluetooth-enabled smartphone or audio player. You are able to stream your stored music library on your Bluetooth-enabled smartphone, as well as music apps downloaded on your smartphone to the Kenwood KMM-BT228U for playback. 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.

• SBC + AAC Codecs: In addition to support for the standard SBC Bluetooth audio codec, the KMM-BT228U offers support of AAC.  By supporting AAC, the KMM-BT228U offers better audio performance of the music streamed from your Apple iPod, iPhone, or iPad.
• Advanced Music Browsing: In addition to basic playback functions (Play/Pause, FF/RW, Skip, Random/Repeat), the KMM-BT228U lets you browse your stored music by Playlist, Artist, Album, Song, etc. Advanced music browsing is supported by Android 4.0+ smartphones and Apple iPhones 5.0+ (specific advanced functions vary by phone).
• Song/Artist Information: The head unit will also display your stored music and music app's song information; such as Artist name and Song/Album title (not compatible with all apps).

Siri Eyes Free Control: When paired and connected to an iPhone with Siri via Bluetooth, the Kenwood KMM-BT228U 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-BT228U and its microphone. You even 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 with Siri. The head unit's audio is attenuated while Siri provides audible directions.

External Mic: 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, noise cancellation, and echo 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.

iPhone/iPod Integration

iPhone Direct Connection: The Kenwood KMM-BT228U's front-panel USB port can be used to connect your Lightning Apple device or 30-pin iPhone 4S to the head unit. The USB connection allows for playback of stored music and music apps on your iPod or iPhone through the Kenwood receiver. If you have a newer iPod/iPhone with the Lightning-connector, you can use Kenwood's Lightning connector-to-USB cable (113KCIP103 sold separately) or the Lightning-to-USB cable that came with your Apple device to connect your iPod/iPhone to the KMM-BT228U. If you have an iPhone 4S with a 30-pin dock connector, you can use the dock connector-to-USB cable that comes with your Apple device or a 3rd party "Made for iPod/iPhone" certified dock-to-USB cable (sold separately) to connect your iPhone 4S to the KMM-BT228U.

• Head Unit Control: From the head unit's front-panel controls you can search for stored music by Playlist, Artist, Album, Song, Podcast, Genre, and Composer. The contents of a Playlist or Category can be searched alphabetically or numerically; you can even skip through the stored music files in specific increments (0.5/1/5/10%). The KMM-BT228U also supports Repeat (file/all) and Random (album/all) playback functions of stored music on your iPod/iPhone. In addition, you'll be able to control basic playback functions (such as Play/Pause, Previous/Next Track) from stored music and select music apps streamed to your iPhone. You can also choose to control your compatible Apple iPhone or touch from its own touchscreen, instead of the head unit.
• Song/Artist Info Display: The KMM-BT228U will display your iPod/iPhone's music file information such as Track number, Elapsed playing time, Artist name, Song title, and Album title.
• Battery Charging: The head unit's USB connection provides 1.5A of current to power and charge your connected Apple 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).

Apple Device Compatibility Chart: The Kenwood KMM-BT228U is "Made for iPod/iPhone" compatible and supports the following iPod/iPhone model features (as of 12/9/2021):

• This unit does not support the iPod Nano or older 30-pin Apple iPod and iPhone devices.
• 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.

 Internet & AM/FM Radio

Internet Radio Apps: The Kenwood KMM-BT228U allows you to access the Pandora online music service through your USB-connected or Bluetooth-connected iPhone, or Bluetooth-connected Android smartphone. Your Apple iPhone can be connected to the KMM-BT228U via USB or through Bluetooth. Your Android smartphone must be connected via Bluetooth. You can also access Apple Music Radio through your USB or Bluetooth connected iPhone. Your iPhone or Android smartphone will need an active Data Plan account with connection to the Internet via 3G, EDGE, LTE (4G), or WiFi.

• Pandora App: The free Pandora App (for Apple iOS 11.0+ or Android 4.0+) lets you play music from the Pandora music service through the Kenwood KMM-BT228U using your USB or Bluetooth connected Apple iPhone, or Bluetooth connected Android smartphone. The Kenwood KMM-BT228U 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. New stations can be created based on the current songs or artists playing. You can also skip song tracks within a station. You can even give songs a thumbs up or thumbs down, as well as bookmark song information. An active Pandora account is required.
• Apple Music Radio (iPhone Only): You can playback Apple Music Radio on your USB or Bluetooth connected Apple iPhone (iOS 9.3.5+) through the Kenwood head unit. With a WiFi or cellular connection on your iPhone, you can listen to Beats 1 and other live radio stations through the Kenwood receiver. Apple Music subscribers can also listen to on-demand stations for almost any genre or create their own stations. You can use the head unit's front-panel controls to select between your Apple Music Radio stations. The unit's front-panel display will also indicate song/artist/album information (no album art).

RDS AM/FM Tuner: The Kenwood KMM-BT228U features a built-in AM/FM tuner with RDS. 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.

• Presets: The KMM-BT228U's tuner features 3 FM banks (1, 2, 3) and 1 AM bank for storing presets. 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. The Kenwood KMM-BT228U 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.
• RDS: The Radio Data System (RDS) feature displays radio broadcast information such as artist & track information when listening to compatible AM/FM stations.

USB/Aux Playback

USB Mass Storage Devices: The Kenwood KMM-BT228U features a front-panel USB (type-A) port that is hidden behind a flip-out cover. The USB port enables connection of USB mass storage class (MSC) devices like USB thumbdrives, USB card readers, or portable digital audio players. You can insert a compatible USB MSC device into the head unit's USB port for playback, control, and song/artist display of a variety of music files.

• Music Drive: The Drive Change feature lets you switch between multiple memory cards (up to 4) in a USB multi-card reader. When a mass storage class (MSC) compatible portable digital audio player is connected to the head unit's USB input, the unit's Drive Change features lets you select between the device's internal memory or external memory (such as a microSD card) for stored music playback.
• USB Charging: USB devices that can be charged via USB will be charged when plugged into the digital media receiver's USB port (max. 1.5A), and the vehicle's ignition switch is set to ACC or On.

Compatible Music Files: The Kenwood KMM-BT228U supports the following types of music files recorded loaded onto a USB mass storage class device.

Playback & Search Functions: The Kenwood KMM-BT228U offers a variety of playback and search functions to help you find and enjoy your music on USB.

• Music Search: The Kenwood AM/FM digital media receiver features a Music Search feature which allows you to scroll through and select your music folders and files using the head unit's rotary knob.
• Repeat & Random: You can repeat the playback of a music file or folder on aUSB device. You can also randomly play back all files within a folder of a USB device.
• Last Position Memory: If the unit is shut off or switched to the tuner mode while a USB is playing, the next time USB is selected as the source, playback will resume from the point where it left off.

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.

Audio Section

24 Bit D/A Converter: The Kenwood KMM-BT228U utilizes a 24-bit digital to analog converter for superior sound quality.

MOSFET Amplifier: The Kenwood KMM-BT228U 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-BT228U 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 Pre-Outs + Sub Control: The KMM-BT228U is equipped with one pair of 2.5V pre-outs (Rear/SW). You can set the Rear/SW preamp outputs for connecting a pair of full-range rear speakers (through an external amplifier) or for connecting a subwoofer (through an external amplifier). When set for rear speakers, the rear outputs operate with the unit's fader control. When set for subwoofer, the outputs are non-fading. Once the Subwoofer preamp output is activated, you can independently control the subwoofer preamp output level (-50 to +10) from the digital media receiver.

Vehicle Settings: In order to optimize the sound quality in your vehicle, you can indentify the type of vehicle you have, select speaker sizes & locations, as well as configure listening distances.

• Car Type: Select your car type to automatically set the delay time of each speaker for timing adjustment of sound output of each channel to have the highest surround effect. Choose from Compact, Full Size Car, Wagon, Mini Van, SUV, or Off
• Speaker Size: You can select which size speakers are in your vehicle - Tweeter (Small, Medium, Large, or None), Front & Rear (3.5", 4", 4.75", 5", 6.5", 6.75", 7", 4x6", 5x7", 6x8", 6x9", 7x10" or None), and Sub (6.5", 8", 10", 12", 15" or Over, None).
• Rear Speaker Location: You can indicate the location of your vehicle's Rear speakers. Choose from Door, Rear Deck, 2nd Row, or 3rd Row.
• DTA (Digital Time Alignment): For a better sound-stage you can select your optimal listening position. You can choose from All, Front Left, Front Right or Front. You can also select to manually fine tune the sound stage, using Digital Time Alignment (DTA) by selecting the distance (0-20') for each individual speaker in the vehicle compared to your listening position.

High Pass & Low Pass Crossovers: You are able to select independent high pass crossovers for your tweeters, front speakers, and rear speakers; as well as a low pass crossover for the head unit's sub output.

• Tweeter: Set high pass filter (HPF) for tweeters.
  • Frequency: 1kHz, 1.6kHz, 2.5kHz, 4kHz, 5kHz, 6.3kHz, 8kHz, 10kHz, 12.5kHz
  • Gain: -8 to 0 dB
• Front & Rear: Independently set high pass filter (HPF) for front & rear speakers.
  • Frequency: 30Hz, 40Hz, 50Hz, 60Hz, 70Hz, 80Hz, 90Hz, 100Hz, 120Hz, 150Hz, 180Hz, 220Hz, 250Hz, Through (Full-Range)
  • Slope: -6dB, -12dB, -18dB, -24dB
  • Gain: -8 to 0 dB
• Sub: Set low pass filter (LPF) for the sub output.
  • Frequency: 30Hz, 40Hz, 50Hz, 60Hz, 70Hz, 80Hz, 90Hz, 100Hz, 120Hz, 150Hz, 180Hz, 220Hz, 250Hz, Through (Full-Range)
  • Slope: -6dB, -12dB, -18dB, -24dB
  • Phase: Reverse (180°), Normal (0°)
  • Gain: -8 to 0 dB

Equalizer: The Kenwood KMM-BT228U offers 8 EQ Presets for easy adjustment, a 3-band Easy EQ, a 13-band Manual EQ for customized tuning, a Drive EQ mode to overcome road noise, and a Stage EQ for better imaging. Separate EQ settings and EQ presets can be stored for each source or you can apply one EQ preset or curve to all sources.

• Preset EQ: The integrated equalizer offers 8 preset sound modes (Rock, Pops, Easy, Top 40, Jazz, Natural, Drive EQ, or User) suitable for the music genre of your choice.
• Easy EQ: The Easy EQ allows you to manually adjust the receiver Bass, Midrange, and Treble from 9dB to +9dB.
• 13-Band EQ: The 13-Band EQ consits of 62.5Hz, 100Hz, 160Hz, 250Hz, 400Hz, 630Hz, 1kHz, 1.6kHz, 2.5kHz, 4kHz, 6.3kHz, 10kHz, & 16kHz frequencies that can be adjusted from -9dB to +9 dB. The Q-factor of each frequency can also be adjusted to 1.35, 1.5, or 2.0
• Drive EQ: The Drive EQ mode helps you hear your music over road noise. It boosts certain frequency ranges that become hard to hear due to road noise.
• Stage EQ: Stage EQ virtually lifts the sound up to ear-level for better imaging inside your vehicle.

Audio Settings: The Kenwood KMM-BT228U offers a variety of audio settings to further enhance your music listening experience.

• Sound Reconstruction: When MP3, WMA, AAC 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.
• Space Enhancer & Sound Realizer: The Spacer Enhancer widens the soundstage inside your vehicle, while the Sound Realizer makes your music sound more realistic.
• Loudness, Bass Boost & Bass Extension: The Loudness feature boosts low and high frequencies to produce a well-balanced sound at a low volume level. The unit's Bass Boost enhances low bass frequencies at any volume level. There is also a Bass Extension feature which further enhances the unit's bass output at extremely low frequencies around 62.5Hz.
• 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 -15 to +6.

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

Remote Control

Kenwood Remote App (for iOS & Android): The Kenwood Remote App (for Apple iOS 8.0+ and Android OS 4.4+) lets you wirelessly control the Kenwood receiver from your compatible Apple iOS device (via Bluetooth or USB) or Android device (via Bluetooth only). The Kenwood Remote App provides traditional touchscreen control, as well as directional and freeform gesture control from your compatible mobile device.

• Source Information & Control: The Kenwood Remote App provides a Source Control screen with a list of the receiver's built-in sources and connected sources to choose from, so you can change the head unit's source from your mobile device. Once an input is selected, the app displays source information such as station number, track number & playback time, as well as song/artist information (when applicable). From the the app, you can also seek stations and tracks, as well as Play and Pause your music.
• Audio Settings: From the application on your mobile device, you can adjust the receiver's volume up or down. In addition, audio settings such as EQ, Crossover, DTA, and other audio adjustments can be easily set using the Kenwood Remote application.
• Media Player: The application's Media Player screen lets you playback your device's stored music library through the Kenwood receiver. From the app on your Apple iOS or Android device, you can control basic playback functions like Play/Pause, Previous/Next Track and Repeat/Random. The Android version of the app even lets you browse your music library by category (Song/Album/Artist/Playlist/Mood). Song, artist, and album information (along with Album Art) will displayed on your Apple iOS or Android device's touchscreen. 
• App Launcher (Android only): The App Launcher feature of the Android version of the Kenwood Remote app lets you access 3rd party applications within the Kenwood Remote app's user interface. The App Launcher can contain up to 24 of your favorite apps for quick access.

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 control adapter (vehicle specific and sold separately).

Optional IR Remote: The KMM-BT228U is compatible with Kenwood's IR remote control (RC-406, sold separately) for wireless operation of the receiver.

Display Features

Detachable Face: The Kenwood KMM-BT228U features a face that detaches from the chassis 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 Display: The KMM-BT228U is equipped with a single-line display featuring white text and a black background. This Vertical Alignment LCD offers high visibility during day-time drive. You can select between English or Spanish text.

Text Scroll: The KMM-BT228U will display song/artist information text from USB, Bluetooth, and iPhone. You can set the text scrolling feature to three different modes (Auto, Once, or Off) to scroll longer titles across the screen.

Brightness & Dimmer: You can adjust the brightness of the LCD and button illumination independently or together (from 0-31). You can also dim (on or off) the display and button illumination. You can even set a specific time for the "Off" and "On" dimmer setting to be activated.

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). The clock is only displayed when selected and does not display simultaneously with song/artist or station information. The day & time can be selected to remain on, even if the head unit is switched off (as long as the vehicle's key is in the "accessory" or "on" position).

Demo Mode: This unit features a Demo mode which can be turned On or Off within the menu.