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Sony CDX-GT420U CD receiver

Item # 158GT420U

Put Sony's CDX-GT420U CD receiver into your dash and open up your car's system to a whole new media experience.

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Put Sony's CDX-GT420U CD receiver into your dash and open up your car's system to a whole new media experience.

Item # 158GT420U

Shop all Sony Car Stereos

About the Sony CDX-GT420U

Ken Nail
Put Sony's CDX-GT420U CD receiver into your dash and open up your car's system to a whole new media experience. Not only will you enjoy excellent sound from your store-bought CDs, but the front-panel USB input lets you plug in thumb drives or hard-disk drives loaded with hours and hours of your favorite music.

Put Sony's CDX-GT420U CD receiver into your dash and open up your car's system to a whole new media experience. Not only will you enjoy excellent sound from your store-bought CDs, but the front-panel USB input lets you plug in thumb drives or hard-disk drives loaded with hours and hours of your favorite music.

The music options don't stop there. The front-panel auxiliary input lets you connect any listening source, and the receiver also plays MP3, WMA and AAC files on disc. Sony's most powerful internal amplifier will do justice to all your music, and you also get a user-friendly wireless remote for easy, safe control over your system while driving.

Sony's EQ3 includes a bank of seven preset sound curves for quick audio adjustments, along with a 3-band equalizer for sonic customization. Adding bass? You can switch the rear preamp outputs to subwoofer mode, activating a level control and a low-pass filter that sends the proper frequencies to your amplifier or powered subwoofer.

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

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Product highlights:

    General features:
    • CD player with built-in amplifier (17 watts RMS/52 peak x 4 channels)
    • plays CDs, CD-Rs, and CD-RW discs, including discs loaded with MP3, WMA, AAC, and ATRAC/ATRACplus music files
    • remote control
    Audio features:
    • EQ3 (seven preset tone curves and a 3-band equalizer)
    Expandability:
    • front-panel USB and auxiliary inputs
    • 2-channel preamp outputs (rear/sub)
    Other features and specs:

    What's in the box:

    • AM/FM/CD receiver
    • 10-amp fuse (installed into chassis)
    • Face
    • Sleeve
    • Trim ring
    • Wiring harness
    • Wireless remote control (RM-X151)
    • CR2025 Lithium battery (installed in remote)
    • 2 Radio removal tools
    • 4 Flathead ISO-mount screws
    • 2 Face security screws
    • USB port cap
    • Operating Instructions (English/French)
    • Installation/Connections sheet (English/French)
    • US Warranty information
    • Canada Warranty information
    • Note about USB devices
    • Note on use of a USB device
    • Note on USB cap
    • Note on installing face security screws

    Customer reviews for Sony CDX-GT420U

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    5.0 out of 5 stars
    43 reviews

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    More details on the Sony CDX-GT420U

    Stacey B.

    Features & specs

    Expandability
    AUX Input Front
    Audio/video Input ---
    USB Input Front
    USB Port Power ---
    Backup Camera Input No
    Second Camera Input No
    CarPlay No
    Android Auto No
    Siri Control No
    Alexa Voice Control
    Android Control No
    Memory Card Slot USB Memory
    Bluetooth Compatible No
    Satellite Radio Ready No
    HD Radio No
    Navigation ---
    iPod Compatibility
    Full size ---
    Nano ---
    Touch ---
    iPhone ---
    General
    RMS Power (CTA-2006) 17 watts
    RMS Power (Manufacturer) ---
    Peak Output 52 watts
    RMS Power Bandwidth 20-20kHz
    Preamp Outputs 2-channel
    Sub Preamp Outputs No
    Switchable Rear Preamp Outputs Yes
    Video Screen No
    Navigation App Compatible (iOS)
    Navigation App Compatible (Android)
    Preamp Voltage 2 volts
    Screen Size ---
    Screen Type ---
    Display Color Blue
    Key Button Color Red
    EQ Bands 3
    Wireless Remote Yes
    Steering Wheel Control Compatible Yes
    Parts Warranty 1 Year
    Labor Warranty 1 Year
    Tuner
    FM Sensitivity 9 dBf
    European Tuning No
    Seek/Scan Seek
    Radio Data System No
    File Playback
    Music File Playback
    High-res Playback

    Product Research

    Features
    External Device Controls

    Features

    Drive S: The CDX-GT420U features the Drive S chassis platform. Drive S includes the CD mechanism, audio stages, 12 volt power supply, and tuner section. The CD mechanism includes a suspension to resist shocks, a motor that draws less power, and a fast low-current pickup that improves durability and CD playback accuracy. The 52W Peak x 4-channel S-MOSFET Power IC produces clearer, more accurate sound, less distortion, and a higher signal-to-noise ratio than previous designs.

    Amplifier Section: The head-unit's amplifier is CEA-2006 compliant and rated at 17 watts RMS x 4 channels at 4 Ohms and 1% THD. The unit is also rated at 23.2 watts per channel minimum continuous average power into 4 ohms, 4 channels driven from 20 Hz to 20 kHz with no more than 5% THD. Peak power is rated at 52 watts per channel.

    Detachable Face: The CDX-GT420U features a detachable face for theft prevention. The radio does not come with a protective face case.

    Disc Compatibility: The CD receiver will play CDs, CD-Rs, and CD-RW discs. The headunit also supports CD Text.

    Compressed Audio File Capability: In addition to audio CDs, CD-Rs and CD-RWs, the receiver will play MP3, WMA, AAC, and ATRAC (ATRAC3 and ATRAC3plus) compressed audio files stored on a CD-R or CD-RW. Below are the requirements and features for compressed audio file playback:

    • ISO: compatible with the ISO 9660 level 1 / level 2 format, Joliet/Romeo in the expansion format, and Multi Session
    • The Maximum number of:
      • folders or albums is 150 including root and empty folders (MP3, WMA, AAC), 255 (ATRAC)
      • files or tracks and folders contained in a disc: 300 (or less if a folder/file names contain many characters) (MP3, WMA, AAC), 999 files or tracks (ATRAC)
      • displayable characters for a folder/file name is 32 (Joliet), or 64 (Romeo)
    • ID3 Tag: ID3 tag versions 1.0, 1.1, 2.2, 2.3, and 2.4 apply to MP3 only. ID3 tag is 15/30 characters (1.0 and 1.1) or 63/126 characters (2.2, 2.3. and 2.4). WMA tag is 63 characters.

    Compressed Audio Display Information: The CD receiver's display can display the following information: Track number/Elapsed playing time, Disc/Artist Name, Album/Group Number, Album/Group Name, Track Name, Text Information and Clock.

    Note: The Album/Group number is displayed only when the album/group is changed.

    Quick-BrowZer: The unit's Quick-BrowZer feature allow you to search for a track on a CD or from your connected USB Mass Storage Device easily by category (Genre, Artist, Album, or All).

    Note: When entering the Quick-BrowZer mode, the repeat/shuffle setting is canceled.

    Digital Music Plus: The Sony CDX-GT420U features Digital Music Plus which is an enhancer technology used to reproduce detail and high frequency sound from compressed audio.

    Radio Tuning: The CDX-GT420U allows you to manual tune or seek tune AM/FM stations. In the Local Seek Mode, the unit will only tune in stations with very strong signals during Seek tuning. The Mono Mode allows you improve poor FM reception by selecting a monaural signal instead of a stereo signal. The radio features 5 memory bands to store and receive AM/FM stations. You can store up to 6 presets each in FM1, FM2, FM3, AM1 and AM2. Other tuner features include:

    • Best Tuning Memory (BTM): This feature selects stations with the best signals within the selected band and stores them in order of their frequency. You can select from FM1, FM2, FM3, AM1, and AM2.
    • Manual Tuning: You can manually tune and find your favorite radio stations one by one for FM1, FM2, FM3, AM1, and AM2.
    • Auto Tuning: You can use the seek button to help you search quickly through the available stations and then choose your own presets from these available stations.

    EQ3 Stage 2: EQ3 Stage 2 offers 7 EQ presets, each of which has a preset value for 3 bands: Low (60Hz), Middle (1kHz), and High (10kHz). The EQ presets and the band values are as follows:

    • Xplod: Low: +10, Middle: +4, High: +4
    • Vocal: Low: +4, Middle: +8, High: +2
    • Edge: Low: +6, Middle: -2, High: +7
    • Cruise: Low: +3, Middle: +4, High: +2
    • Space: Low: +4, Middle: +5, High: +8
    • Gravity: Low: +8, Middle: 0, High: +2
    • Custom: Adjustable -10dB to +10dB for each band

    Loudness: The Loudness feature reinforces the bass and treble levels so you can listen clearly to your music at low volume.

    Switchable Preamp Outputs: The CDX-GT420U has a set of preamp outputs that can be set for the rear channels or for subwoofer operation. When set to subwoofer, the output becomes non-fading and a low pass filter is activated with a selectable cut-off frequency of 125Hz, 78Hz, or Off.

    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 cassette, MD or MP3 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 doesn't appear as an available source.

    Mounting Angle: For flexibility of installation, this unit can be mounted between 0 (horizontal) and 45 degrees.

    Display Illumination/Clock Display: Pressing the Off button once will turn off audio output, but the clock display and button illumination remain on. This makes the clock display and face/button illumination "Keyed" instead of "Unit On" only. To turn the unit off completely, you must press the Off button for two seconds.

    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.

    Dimmer: You can manually dim the display at night if needed.

    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.

    Eject: The CD disc can be ejected with the power off. The CD player will automatically reinsert the disc if it's ejected but not removed for 15 seconds or more.

    Wireless Remote Control: The headunit comes supplied with an IR wireless remote control (RM-X151) for easy operation.

    Optional Wired Remote Control: This unit also has a 3.5mm minijack input for the optional RM-X4S wired rotary commander. In addition, the PAC SWI-PS steering wheel remote interface is compatible with this head unit. The SWI-PS interface allows you to retain the use of your steering wheel and/or rear seat radio controls when replacing the factory head unit in select vehicles with a Sony head unit with wired remote capability. In some GM vehicles, this adapter allows you to retain heater control buttons as well.

    External Device Controls

    USB Input: The receiver is equipped with a front-panel Type-A USB input for plugging in a USB Mass Storage Class device or Sony Walkman ATRAC audio device. The head unit can play music files stored on the USB device in MP3, WMA, AAC, or ATRAC formats. When playing a USB device, the display can indicate track/album/artist/genre number, track/artist/album/genre name, elapsed playing time, text information, or clock. The headunit can recognize up to 500 folders with 128 tracks each when connected to a USB Mass Storage Device. The unit can recognized up to 65,535 tracks when connected to a Sony ATRAC device. A USB cap is supplied to place in the USB input when it is not in use.

    Note: Compatible USB devices include Sony Flash Memory and Hard Drive Walkman MP3 players, and select flash drives from Dikom, Hama, Memorex, Integral, Philips, PNY Electronics, and SanDisk.

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