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Kenwood Excelon KMM-X503

Digital media receiver — does not play CDs

Item # 113KMX503

Assurance counts, and Kenwood backs this Excelon Series KMM-X503 digital media receiver with a 2-year warranty.

Find what Fits your car

Assurance counts, and Kenwood backs this Excelon Series KMM-X503 digital media receiver with a 2-year warranty.

Discontinued item
13 questions - 34 answers

Item # 113KMX503

About the Kenwood Excelon KMM-X503

HD Radio® and more

Assurance counts, and Kenwood backs this Excelon Series KMM-X503 digital media receiver with a 2-year warranty. An impressive array of entertainment options begins with its built-in HD Radio™ tuner, which gives you access to more features and better sound quality from your participating local radio stations. Your high-resolution music files, loaded on smartphone, thumb drive, or portable player, will also sound a whole lot better, backed by a 13-band EQ and proprietary sound enhancement perks like Drive EQ.

HD Radio

HD Radio® and more

Assurance counts, and Kenwood backs this Excelon Series KMM-X503 digital media receiver with a 2-year warranty. An impressive array of entertainment options begins with its built-in HD Radio™ tuner, which gives you access to more features and better sound quality from your participating local radio stations. Your high-resolution music files, loaded on smartphone, thumb drive, or portable player, will also sound a whole lot better, backed by a 13-band EQ and proprietary sound enhancement perks like Drive EQ.

With built-in Bluetooth®, you'll have a robust streaming experience courtesy of next-level Spotify® and Pandora® compatibility. Kenwood even gives you two prominent, direct access Bluetooth buttons for music and calling. Two-phone pairing makes connecting for hands-free calling a breeze if you share your vehicle with another driver.

Two USB inputs

Thanks to front-facing and rear USB inputs, you can connect two devices to the KMM-X503 for charging at once. Or use one USB input for connecting your smartphone for streaming Spotify or Pandora on the fly and the other to turn your old MP3 player or thumb drive into a permanent audio source. While the KMM-X503 doesn't play CDs, options abound.

Options for Apple® and Android™

Got an iPod® or iPhone®? You can plug your player in via USB to access your playlists. Dedicated "search" and "return" buttons, plus handy tools like AppMode, Alphabet, Percentage Skip, and Related Search help you find your music fast.

If you store your music on an Android device, Android Open Accessory 2.0 protocol (AOA) lets you connect your phone either to a USB port or through Bluetooth, then control all the music you've stored there. You'll be able to run the apps you like and take advantage of a variety of search and playback features.

Turn your phone into a remote

The KMM-BT525HD can play MP3, AAC, WAV, and FLAC music files, so you'll be able to enjoy your entire music library. And if you want to hand over control of the stereo to the gang in the backseat, the Kenwood Remote App lets you turn your smartphone into a wireless remote.

Compatible with SiriusXM

Add a satellite radio tuner (subscription also required) to enjoy SiriusXM's remarkably varied range of music, entertainment, news, and sports programming. If you're planning to build a really rockin' system, this high-performance receiver offers three sets of preamp outputs, so you'll be in good shape when you add amplifiers and subwoofers.

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.

This digital media receiver will not play CDs.

READ LESS

Product highlights:

    General Features:
    • digital media receiver (does not play CDs)
    • plays MP3, WAV, AAC, WMA, and FLAC music files
    • built-in HD Radio tuner
    • Bluetooth with direct access button
    • pair two phones for simultaneous hands-free calling and up to five for music streaming
    • wireless music browsing
    • 1.5 line LCD display with variable-color illumination
    Smartphone Features:
    • iPod/iPhone direct connection with optional cable
    • Remote App lets you use your smartphone as a wireless remote
    • control and charging of select Android devices using the USB connection
    • Pandora, Spotify, and iHeartRadio Internet radio control with iPhone and Android
    Audio Features:
    • Drive EQ improves sound to compensate for exterior noise
    • 13-band equalizer
    • low-pass filter and sub level control
    Expandability:
    • compatible with SiriusXM satellite radio tuner
    • inputs: front and rear USB inputs, front AUX input
    • outputs: 6-channel preamp outputs (5-volt front, rear, sub)
    Other Features and Specs:
    • built-in MOSFET amplifier (22 watts RMS/50 peak x 4 channels)
    • compatible with most factory steering wheel audio controls (adapter required)
    • removable theft-deterrent faceplate
    • multi-language display (English, Spanish)
    • microphone included
    • warranty: 2 years
    • Our 60-day money-back guarantee
    • MFR # KMM-X503

    What's in the box:

    • Digital media receiver (10A fuse)
    • Face (attached)
    • Trim ring (attached)
    • Sleeve (installed)
    • Wiring harness
    • Microphone w/ bracket (attached 10' cable terminated by a right-angle mono 3.5mm connector)
    • 2 Removal tools
    • 4 Countersunk ISO-screws
    • 4 Pan-head ISO-screws
    • Face-fixing screw
    • Quick Start Guide
    • Warranty Card

    Featured video:

    Customer reviews

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    More details on the Kenwood Excelon KMM-X503

    Stacey B.

    Features & specs

    Expandability
    AUX Input Front
    Audio/video Input ---
    USB Input Front/Rear
    Backup Camera Input No
    Second Camera Input No
    CarPlay No
    Android Auto No
    Siri Control Yes
    Alexa Voice Control N
    Android Control Yes
    Memory Card Slot USB
    Bluetooth Compatible Built-in
    Satellite Radio Ready SiriusXM
    HD Radio Built-in
    Navigation ---
    iPod Compatibility
    Full size No
    Nano 7
    Touch 6/5
    iPhone XSMax/XS/XR/X/8+/8/7+/7/6S+/6S
    General
    RMS Power (CTA-2006) N/A
    RMS Power (Manufacturer) 22 watts
    Peak Output 50 watts
    RMS Power Bandwidth 20-20kHz
    Preamp Outputs 6-channel
    Sub Preamp Outputs Yes
    Switchable Rear Preamp Outputs No
    Video Screen No
    Navigation App Compatible (iOS)
    Navigation App Compatible (Android)
    Preamp Voltage 5 volts
    Screen Size ---
    Display Color Variable
    Key Button Color Variable
    EQ Bands 13
    Wireless Remote Optional
    Steering Wheel Control Compatible Adapter required
    Parts Warranty 2 Years
    Labor Warranty 2 Years
    Tuner
    FM Sensitivity 7.2 dBf
    European Tuning Yes
    Seek/Scan Seek
    Radio Data System Yes
    File Playback
    Music File Playback MP3,WMA,AAC,WAV,FLAC
    High-res Playback FLAC (96kHz)
    The Kenwood Excelon KMM-X503 replaces these items:

    Product Research

    Built-in Bluetooth
    Android & iPhone Integration
    Internet+SiriusXM+HD Radio
    USB/Aux Playback
    Audio Section
    Remote Control
    Display Features

    Built-in Bluetooth

    Bluetooth 3.0: The Kenwood KMM-X503 is equipped with built-in Bluetooth (ver. 3.0) 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 1.6 (Hands Free Profile), PBAB 1.0 (Phone Book Access Profile).
    • Audio Streaming: A2DP 1.2 (Advanced Audio Distribution Profile), AVRCP 1.5 (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-X503. Visit Kenwood's Support Site for a complete list of compatible Bluetooth enabled phones.

    SSP & USB Pairing: With Secure Simple Pairing (SSP), you can easily pair a Bluetooth enabled phone to the Kenwood KMM-X503 without having to enter pin codes or go through complicated settings. You can even pair your Apple iPhone (iOS 5+) or Android smartphone (running Kenwood Music Play App) by simply connecting it to the Kenwood head unit via USB and following a single prompt on the head unit's display.

    • 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.
    Note: 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.

    Bluetooth Hands-Free Communication: The head unit supports Bluetooth hands-free communication for your Bluetooth enabled mobile phone. The controls of the KMM-X503 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-X503 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-X503, 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-X503. 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.
    • 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.

    Wireless Audio Streaming: The Kenwood KMM-X503 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-X503 for playback.

    • SBC + AAC Codecs: In addition to support for the standard SBC Bluetooth audio codec, the KMM-X503 offers support of AAC. By supporting AAC, the KMM-X503 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-X503 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).
    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.

    Siri Eyes Free Control: When paired and connected to an iPhone with Siri via Bluetooth, the Kenwood KMM-X503 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-X503 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.

    Note: 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-X503; visual data will still need to be viewed from your iPhone device).

    Android & iPhone Integration

    Android Open Accessory 2.0 (AOA 2.0) Connectivity: The Kenwood KMM-X503's front- or-rear-panel USB port lets you connect select Android (OS 4.1-7.1.2) smartphones that support AOA 2.0 for music playback. Kenwood does not guarantee operation with all Android devices, regardless of operating system. There are two Android AOA 2.0 modes to choose from based on what content you want to listen to and how you want to control it.
    • Hand Mode: The Kenwood KMM-X503 supports Android Open Accessory 2.0 (AOA 2.0), which lets you connect your Android (OS 4.1-7.1.2) smartphone to the KMM-X503's front- or rear-panel USB port and listen to stored music and music apps from your Android device through the Kenwood head unit. You'll be able to control basic playback functions such as Play/Pause and Previous/Next Track. Other advanced music navigation will still be done from your Android smartphone's touchscreen. In this mode, the head unit will not display song/artist information; only "Hand Mode" will show up on display. You'll continue to view song/artist information from the Android device's touchscreen. You'll also still be able to access other functions and applications from your Android smartphone's touchscreen, while listening to music through the head unit. If you make a call or answer a call from your smartphone while listening to music in this mode, the music will pause until you are finished with the call and then start back up again.
    • Browse Mode (via Kenwood Music Play App): Downloading the Kenwood Music Play app onto your Android (OS 4.1-7.1.2) smartphone with AOA 2.0 support not only allows you to listen to stored music from your Android device through the Kenwood digital media receiver connected via USB, but it also lets you browse your Android smartphone's music library from the head unit's front-panel controls. You can browse your store music library by Playlist, Artist, Song, Album, or Genre. 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%). You can also control Play/Pause and Previous/Next track from the head unit. In addition, the head unit will display song/artist information. You can exit the Kenwood Music Play app to access other functions and applications of your Android smartphone, while your stored music library is still playing through your head unit. If you make a call or answer a call from your smartphone while listening to music in this mode, the music will pause until you are finished with the call and then start back up again.
    Note: Some Android devices may not support Android Open Accessory (AOA) 2.0. Kenwood does not guarantee operation with all Android devices.

    iPhone Direct Connection: The Kenwood KMM-X503's front- or rear-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 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-X503. 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-X503.

    • 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-X503 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-X503 will display your iPod/iPhone's music file information such as Track number, Elapsed playing time, Artist name, Song title, and Album title.

    Smartphone Charging: The head unit's USB connection provides 1.5A of current to power and charge your connected Apple iPod/iPhone or Android smartphone 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-X503 is "Made for iPod/iPhone" compatible and supports the following iPod/iPhone model features (as of 11/30/2018):

    Apple Device Generation Tested Version Media Type Control Type Music Apps Display Type Bluetooth Charge
    Audio Video Head Unit iPod/iPhone Remote App Pandora Spotify iHeart Artist/Song Text Track Info Phone Audio Siri
    iPhone
    4S 9.3.5 Y N Y Y Y N N Y Y Y Y Y Y Y
    5/5C 10.3.3 Y N Y Y Y Y Y Y Y Y Y Y Y Y
    5S 12.1 Y N Y Y Y Y Y Y Y Y Y Y Y Y
    SE 12.1 Y N Y Y Y Y Y Y Y Y Y Y Y Y
    6/6/+6S/6S+ 12.1 Y N Y Y Y Y Y Y Y Y Y Y Y Y
    7/7+ 12.1 Y N Y Y Y Y Y Y Y Y Y Y Y Y
    8/8+ 12.1 Y N Y Y Y Y Y Y Y Y Y Y Y Y
    X/XR 12.1 Y N Y Y Y Y Y Y Y Y Y Y Y Y
    XS/XS Max 12.1 Y N Y Y Y Y Y Y Y Y Y Y Y Y
    touch
    5th 9.3.5 Y N Y Y Y N N N Y Y N Y Y Y
    6th 12.0 Y N Y Y Y N N N Y Y N Y Y Y
    nano
    7th 1.02PC Y N Y N N N N N Y Y N Y N Y
    Note: Apple iPod/iPhone software updates may change functionality results. If you download a newer software version, you may need to reset the head unit and your iPod/iPhone to regain functionality. If this doesn't work, you may need to wait until a newer software update is available.

    Internet+SiriusXM+HD Radio

    Internet Radio Apps: The Kenwood KMM-X503 allows you to access Pandora, Spotify, and iHeartRadio online music services through your USB-connected or Bluetooth-connected iPhone, or Bluetooth-connected Android smartphone. Your Apple iPhone must be connected to the KMM-X503 via the Kenwood KCA-iP103 cable (sold separately), the cable supplied with your iPhone, or through Bluetooth. Your Android smartphone must support A2DP/AVRCP/SPP Bluetooth profiles and be paired with the Kenwood KMM-X503. 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 10.0+ or Android 4.0+) lets you play music from the Pandora music service through the Kenwood KMM-X503 using your USB or Bluetooth connected Apple iPhone, or Bluetooth connected Android smartphone. The Kenwood KMM-X503 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.
    • Spotify: The KMM-X503 has the ability to playback & control content from the Spotify music app (for Apple iOS 10.0+ or Android OS 4.0+) on your USB or Bluetooth connected iPhone, or Bluetooth connected Android smartphone. You can play, pause and skip tracks, browse playlists, albums and radio stations through the Kenwood receiver's front-panel controls. You can even create your stations by entering a track, artist, or playlist. You also get song/artist information on the unit's LCD touchscreen. If you are a Spotify Premium user (requires a monthly paid subscription), you can enjoy ad-free, high quality music even when there is no internet connection.
    • iHeartAuto: The free iHeartAuto app for Kenwood (for Apple iOS 9.0+ or Android OS 4.0+) lets you play music from the iHeartRadio music service through the Kenwood KMM-X503 using your USB or Bluetooth connected Apple iPhone, or Bluetooth connected Android smartphone. 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-X503 will provide control over the iHeartRadio Auto 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. 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 smartphone to connect to the Internet. Not supported in Canada and only available in the United States.

    SiriusXM-Ready: The Kenwood KMM-X503 is SiriusXM-Ready and compatible with the SiriusXM Connect Vehicle Tuner (220SXV300 sold separately). The SiriusXM Connect Vehicle Tuner supports SiriusXM programming with access to 175+ SiriusXM channels via subscription; check out the most popular SiriusXM subscription packages here. Additional features of the SiriusXM Connect tuner include:

    • Channel List w/ Category Search: The Channel list displays a list of all available channels. You can also search and list channels in specific categories.
    • Song/Artist Info: Displayed Information such as Channel Name, Artist Name, & Song Title can be viewed on the head unit's LCD.
    • SmartFavorite Presets: Up to 18 SiriusXM Satellite Radio station presets can be saved. These 18 SiriusXM presets are automatically identified as SmartFavorites for advanced features such as Replay, TuneStart & TuneScan (see below).
      • Replay: When you select a SmartFavorite preset you can rewind and replay up to 30 minutes of any of the missed news, talk, sports or music content.
      • TuneStart: With the TuneStart enabled, playback will automatically start from the beginning of a song when you tune to a SmartFavorite preset channel.
      • TuneScan: TuneScan gives you a short preview of the songs that you have missed on each of your Smart Favorite Preset music channels or currently tuned music channel.
    • Parental Control: Channels containing unsuitable content for children can be blocked. When enabled, The Parental Control feature requires you to enter a 4-digit passcode to tune to the locked channels.
    Note: A separate SiriusXM Satellite Radio subscription is required (operates on the XM Network). However, you can easily add this SiriusXM tuner to an existing Sirius or XM account for a Multi-Radio Discount Plan.

    HD Radio: With its built-in HD Radio tuner, you can receive digital AM/FM broadcasts from local stations where available. HD Radio significantly improves AM/FM audio quality and reception, as well as includes information such as artist name and song titles or traffic news, viewable on the receiver's display. HD Radio Technology will deliver high-quality digital sound. AM digital will have FM-like quality in stereo (70dB SN @ 40-15kHz), while FM digital will have CD-like quality (75 dB SN @ 20-20kHz) with static free and clear reception. The unit's built-in HD Radio tuner allows analog AM/FM tuning as well.

    • Seek Tuning: You can choose one of three seek modes: Auto 1 (seek tuning), Auto 2 (cycles through and tunes the selected band's preset stations only with each button press), or Manual. You can also setup the KMM-X503 to search only HD Radio stations, Analog AM/FM stations, or both.
    • Tuner Presets: The KMM-X503's tuner features 3 FM banks (1, 2, 3) and 1 AM bank for storing presets. 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). Not only does the CD 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.
    • Station Info, Multicasting, & Emergency Alerts: AM/FM digital stations can offer text and data such as artist names and song titles. In addition to conventional broadcasts, with HD Radio broadcasting it is possible to choose from up to 8 multicast programs (HD1 to HD8). You can even receive an emergency alert message while listening to another source or while in Standby mode, via HD Radio Broadcast.
    Note: HD Radio is the system for digital AM and FM broadcasting in the U.S. More than 2,000 radio stations are broadcasting their primary signals in digital HD Radio technology, as a free service. Go to HDRadio.com to check for HD.

    USB/Aux Playback

    Dual USB Ports: The Kenwood KMM-X503 features a front-panel USB (type-A) port that is hidden behind a flip-out cover and a rear-panel USB (type-A) port that is attached to rear chassis via a 39" cable. The USB ports enable 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 front- or-repanel USB port for playback, control, and song/artist display of a variety of music files.

    • Drive Change: 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.
    Note: Not compatible with USB hubs.

    Compatible Music Files: The Kenwood KMM-X503 supports the following types of music files loaded onto a USB mass storage class device.

    Media Type USB (MSC)
    File System FAT 12/16/32
    Playable File Types MP3: bit rate of 8-320kbps w/ sampling rate of 8-48kHz
    WMA:
    bit rate of 32-192kbps w/ sampling rate of 8-48kHz
    AAC: bit rate of 32-192 kbps w/ sampling rate of 8-48 kHz
    WAV:
    bit depth of 16-bit w/ sampling frequency of 44.1kHz
    FLAC:
    bit depth of 24-bit w/ sampling frequency of 96kHz
    Maximum # of Folders/Files 999 folders/20,480 files (999 files per folder)
    Tags ID3 tag (version 1.0/1.1/2.2/2.3/2.4), WMA tag, AAC tag, FLAC tag, WAV tag

    Playback & Search Functions: The Kenwood KMM-X503 offers a variety of playback and search functions to help you find and enjoy your music on a USB device.

    • Music Search: The Kenwood 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 a USB 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 device 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-X503 utilizes a 24-bit digital to analog converter for superior sound quality.

    MOSFET Amplifier: The Kenwood KMM-X503 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-X503 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

    6Ch/5V Pre-Outs + Sub Control: The KMM-X503 is fitted with front, rear and subwoofer 5 volt pre-outs. The front and rear speaker preamp outputs are balance and fade adjustable. The subwoofer preamp output is non-fading and features independent level control (-50 to +10).

    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-X503 offers 8 EQ Presets for easy adjustment, a 13-band 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.
    • 13-Band EQ: The User mode allows you to manually adjust the head unit's 13-band EQ (62.5Hz, 100Hz, 160Hz, 250Hz, 400Hz, 630Hz, 1kHz, 1.6kHz, 2.5kHz, 4kHz, 6.3kHz, 10kHz, & 16kHz). Each frequency's gain level can be adjusted from -9dB to +9 dB, while the Q-factor can 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-X503 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.
    • 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

    Remote App (for iOS: The Kenwood Remote App (for Apple iOS 8.0+) operates the Kenwood receiver like a wireless remote control from your USB or Bluetooth connected Apple iOS device. The Kenwood Remote App provides traditional touchscreen control, as well as directional and freeform gesture control from your compatible mobile device.

    • Source Selection: The Kenwood Remote App provides list of the receiver's built-in sources and connected sources (Aux, AM/FM, USB, Bluetooth); so you can select which source you want to listen to from the app on your mobile device.
    • Playback Control: The application lets you control USB and Bluetooth audio playback. You have control of Play/Pause, Previous/Next Track, and Repeat/Random. From the app you can also select AM/FM bands, select preset stations, and seek AM/FM stations.
    • Display Information: The app also displays source information such as station number, track number & playback time, as well as song/artist/album information (when applicable).
    • 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.
    Notes:
    • When using the Kenwood Remote App with your compatible Apple iOS device, the application and device must be connected to the receiver via Bluetooth (not USB) for playback of Bluetooth audio. For playback of a USB-direct connection from an Apple iOS device, the device and application must be connected to the head unit via USB (not Bluetooth).
    • The Remote App is no longer compatible with any model Android OS device (as of 1/1/2019).

    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).

    Optional IR Remote: The KMM-X503 is compatible with Kenwood's IR remote control (RC-406, sold separately Kenwood's online accessories and parts store) for wireless operation of the receiver.

    Display Features

    Detachable Face: The Kenwood KMM-X503 features a detachable faceplate 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.

    1.5 Line Display: The KMM-X503 is equipped with a 13-digit, 1.5-line LCD screen which allows you to view source information along with the clock (the time will be in a smaller text). You can select between English or Spanish text.

    Variable Color Illumination: The Kenwood KMM-X503 features variable color display and button illumination. You can choose from one of 24 preset colors, have the unit scan through all 24 preset colors continuously, or customize your own color (RGB; 0-9). The custom setting allows you to individually adjust the intensity of Red, Green, and Blue (from 0-9) to better match your vehicle's interior lights. The same color setting is applied to both the display and buttons, or you can choose a different color for Zone 1 and Zone 2 (see owner's manual illustration). The Kenwood logo remains red.

    Text Scroll: The KMM-X503 will display song/artist information text from USB, Bluetooth, iPod, and Android. 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.

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    Customer Q&A

    13 questions already asked

    Q
    does this play android with os 8.0 through USB or Bluetooth?
    [ M  May 05, 2020 ]
    1 answer
    A
    I haven't tried USB, but Bluetooth works just fine with my Android Moto Z3Enter
    [ JON G  May 06, 2020 ]
    Q
    Can get a remote control for it?using your phone for a remote is dangerous when driving!
    [ Alan  Mar 27, 2020 ]
    1 answer
    A
    You can get a remote for it from Kenwood directly, The model number is the RC-406.
    [ Calvin  Apr 15, 2020 ]  Staff
    Q
    Does KENWOOD EXCELON products offer more build or sound quality than KENWOOD normal products? i know they have more warranty.
    [ mrali  Jan 23, 2020 ]
    3 answers
    A
    Usually Excelon has slightly higher grade xomponents and specs compared to base model Kenwood.....have had variety of audio equipment for almost 40 years ....unless you are EXTREMELY not picky, you will be pleased with Kenwood/ Excelon....remember, speakers make a huge difference as well.....doesn't matter what head unit you have if the speakers aren't good
    [ JON G  May 06, 2020 ]
    A
    I'm not an expert on the Excelon line vs. Kenwood's regular line of head units, but I have been very pleased with the two Excelon units I've purchased. They have a ton of customizable features for both sound quality and appearance, and have plenty of power (unless you simply have to have a subwoofer) for most applications. Bluetooth connectivity is also excellent, if that's important to you, and interfaces perfectly with my Sirius satellite radio unit.
    [ Kirk  Feb 08, 2020 ]
    A
    Thanks for your question. For information on comparing two or more models I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They will be able to help determine the differences and help you make the best choice for your system and your budget.
    [ Krissy  Feb 06, 2020 ]  Staff
    Q
    How do I get it to skip inputs that I am not using? I don't have any use for such inputs as Video and Rear USB. I want to permanently bypass them when toggling from radio to bluetooth.
    [ FREDERICK  Jan 10, 2020 ]
    2 answers
    A
    Guess I never tried.....never thought it was that inconvenient.....good luckEnter
    [ JON G  May 06, 2020 ]
    A
    We have not received any answers from other customers on your question. I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They should be able to help answer your question.
    [ Calvin  Feb 13, 2020 ]  Staff
    Q
    According to the manual you cannot select folders on a USB thumbdrive with 1/2 up/down. It states select a folder does not work with ipod/android so how are you supposed to access your files?
    [ eric  Jan 06, 2020 ]
    1 answer
    A
    You CAN select folders and songs on a thumb drive. Never used it with ipod, but using it with a Sony mp3 player through the aux jack, you can select the song on the mp3 player directly that you want to hear.
    [ GE  Jan 06, 2020 ]
    Q
    What is the charging amperage on the USB ports?
    [ Ken  Dec 31, 2019 ]
    2 answers
    A
    5V 1.5A max, not sure if that's max of each or both total.
    [ Jay  Jan 07, 2020 ]
    A
    to my knowledge they are just input ports I have never charged a phone with mine
    [ Pete  Dec 31, 2019 ]
    Q
    is it possible to bridge the rear two channels into the front ones?
    [ Stuart  Dec 24, 2019 ]
    2 answers
    A
    no. it's not mentioned in the manual. likely you'd get no sound, worst case you fry the head unit.
    [ Jay  Jan 07, 2020 ]
    A
    Headunits are generally not bridgeable, no. You should reach out to one of friendly product advisors for more personalized help! https://www.crutchfield.com/support/ContactUs.aspx
    [ Calvin  Jan 06, 2020 ]  Staff
    Q
    how long is the rear usb cord?
    [ david the man  Sep 13, 2019 ]
    5 answers
    A
    I don't have an exact length... but I would have to say it is at least 5 feet
    [ Skyler  Sep 24, 2019 ]
    A
    Approx 3' long
    [ James  Sep 24, 2019 ]
    A
    I have a 2005 Chevy pick up and it hangs out the back of my dash easy to connect I want to say 16 inches
    [ Pete  Sep 23, 2019 ]
    A
    It's about 2 or 3 foot. Mine reaches to my glove box in my 2000 Toyota Land cruiser with extra cord.
    [ JAY  Sep 23, 2019 ]
    A
    I just traded my car in last Saturday along with this receiver! But from memory, the cable was pretty long. I would guess it was around 18 to 24 inches, as I remember having a bit of slack left even though I ran it out to the passenger foot area on the center console of my little s40 Volvo. Sorry I can't provide any better answer here. Perhaps another customer will have the details.
    [ Robert  Sep 13, 2019 ]
    Q
    Is this unit waterproof? I am looking to install it on my 2005 Harley Davidson electra glide and it will likely see the elements.
    [ M  Aug 02, 2019 ]
    4 answers
    A
    I would say no unless you have a shield that covers it I would recommend I am marine stereo
    [ Pete  Aug 05, 2019 ]
    A
    I see nothing to suggest it is waterproof. Most manufacturers make marine products that claim to be waterproof. The best ones I've seen are white and have a hard plastic/lexan cover to snap over the body and add another layer of protection. It's going to cost more, but bikes and boats are luxury items.
    [ Kevin  Aug 02, 2019 ]
    A
    No, not water proof.
    [ Gary  Aug 02, 2019 ]
    A
    even though it is very well-made, I would not consider it to be waterproof. You may want to look at other options made for boats, etc. ask your crutchfield representative if they have anything special made for marine applications because they are more made for wet conditions.
    [ JON G  Aug 02, 2019 ]
    Q
    Can Bluetooth sound come through when iPod is playing music? For example, I'm running Google Maps navigation for directions and playing music through iPod. Will the turn-by-turn notification come through while the music is playing through iPod?
    [ Niphon  Jul 05, 2019 ]
    3 answers
    A
    Yes, you can hear Siri or any other voice-related functions (like a phone call) through the music when Bluetooth is playing. The music is quieted until the voice command is done, then resumes its original volume.
    [ Thomas  Jul 06, 2019 ]
    A
    Yes. I play pandora while taking long trips and run my Google maps simultaneously. The map directions will announce while playing, and the music automatically reduces volume but continues to play. The same is true when a phone call comes through, although the music mutes completely with a cell phone call. Note that I am connecting a Samsung Android phone vice an Apple product but suspect an Apple product would work similarly.
    [ Robert  Jul 06, 2019 ]
    A
    Unfortunately no you would have to be using the bt audio source to here your your nav so you won't be able to here your iPod. The two sources at once feature through the bt would be one for calls and one for audio that's about it.
    [ Rafael  Jul 05, 2019 ]
    Q
    Does the rear USB port provide enough power to attach and run a hard drive as a source?
    [ Zorsith  May 11, 2019 ]
    2 answers
    A
    Based on my research, it sounds like it may have trouble playing songs on usb hard drives, though i never tested it. This is what others reported. Buy a large thumb drive to play songs off of. Should have no trouble with 128 gb drives, although I just use 32 gb and below.
    [ GE  Jan 06, 2020 ]
    A
    I would say, I think so. As i have used usbs as power sources for other things and it worked.
    [ Adam  May 16, 2019 ]
    Q
    The instructions with the crutchfield adapter harness for my 98 corvette says to connect the red wire to the red wire from the kenwood kmm-x503 unit. There are two red wires on the crutchfield harness. Which do i connect? Or are both to be connected? They both go to the xsvi-2004.
    [ Michael  Apr 21, 2019 ]
    1 answer
    A
    If you purchased the product from Crutchfield, feel free to contact our Tech Support team. They can walk you through the settings on the product and see if there may be a fix. Our toll-free Tech Support number is printed on your invoice, and is also available under the "My Orders" tab in the "My Account" section of our website. If you did not purchase the unit from Crutchfield, then you may want to contact the manufacturer.
    [ Krissy  Apr 29, 2019 ]  Staff
    Q
    does this unit have a dimmer wire for day / night settings?
    [ Marshall  Feb 25, 2019 ]
    7 answers
    A
    ask the crutchfield representative about dimmer wiring for your vehicle, I think that is an option, they would know. I use the brightness control on the unit to control the brightness
    [ JON G  Aug 02, 2019 ]
    A
    There is no wire that allows a connection to automatically dims the lights on the unit with the lights on the instrumentation panel of the vehicle. There is however, controls on the unit that can adjust the brightness. You can also set a timer based on the clock on the unit that will auto dim/auto bright based on the users input time settings.
    [ Scott  Feb 25, 2019 ]
    A
    No, but it does have a dimmer setting based on the time.
    [ Sean  Feb 25, 2019 ]
    A
    Not that I know of. Multiple colors make it nice at night
    [ James  Feb 25, 2019 ]
    A
    The unit has a dimmer setting that is either on or off.
    [ Troy  Feb 25, 2019 ]
    A
    Honestly, I don't recall.
    [ Todd  Feb 25, 2019 ]
    A
    Hi Marshall, yes it does have a dimmer setting. Thanks.
    [ Beth  Feb 25, 2019 ]
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