3.125 1 5 0

The Boss 636CA/RDS636CA is a basic car head-unit that fits into a 1-DIN slot.

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reads most CDs, even burned or scratched ones

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capable of good volume output without the help of an additional amplifier

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preamp output is ideal for a high-powered subwoofer amp, gives a strong and clear signal

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good feel to the controls, can work with it while you're driving

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audio has clarity that is much better than factory-installed OEM head units

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  • Only 3 words are allowed.

display looks pretty boring, blocky text is unappealing

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labels on the buttons are very hard to read in sunlight, need to pretty much know what they are ahead of time

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takes a few seconds longer than usual to load a CD

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  • Only 3 words are allowed.


The Boss 636CA/RDS636CA is a basic car head-unit that fits into a 1-DIN slot. This is the same as the Boss 634CA/RDS634CA, but has added support for playing MP3 files from a burned CD. The model that follows, the Boss 637UA/RDS637UA, has a redesigned front panel that includes a USB port and works with a higher power output. This model outputs 50 watts to each of 4 channels, and includes a 5 volt preamp output for additional amplifiers to be added later on. CD-Text or information from the ID3 tag is displayed on an active black mask display, and a series of small illuminated buttons are available for quick access to various functions. A wireless remote is also included to enable full control from the back seat.

  • Single DIN mounting
  • Full detachable front panel
  • 5 Volt preamp output
  • Active black mask display
  • Illuminated control buttons
  • PLL synthesized tuner with 24 Station presets
  • Switchable USA/Europe radio frequencies
  • Front panel auxiliary input
  • Compatible with audio output of iPod and other MP3 players
  • Quartz digital clock
  • CD mute function / Track repeat / Intro scan
  • 1 Bit D/A converter / 8X oversampling
  • ESP (anti-skip mechanism)
  • MP3/CD-R/CD-RW compatible
  • ID3-Tag display
  • Preset EQ response curves / Separate bass and treble
  • Loudness / Balance and fader controls
  • RCA outputs
  • Local/distance switches
  • Wireless remote control
  • Output power: 50w x 4 channels
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