Boss 637UA/RDS637UA

Released April, 2010

Product Shot 1The Boss 637UA/RDS637UA is a car head unit for CDs and MP3s built to work with European radio station frequencies. While the features are similar to the Boss 636CA/RDS636CA, a number of changes have been made.

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In addition to a re-conceptualized faceplate design with blue accents, a USB port is available to enable connection to data storage devices for MP3 playback. The AUX port compatible with portable media devices is still available as well. Power output to the 4 channels has been increased to 60 watts each. Most of the internal features are the same, and include separate bass and treble controls, balance and fader controls, and a loudness control for better sound at lower volumes. RCA outputs also enable further expansion of the system into external amplifiers.


  • Single-DIN mounting
  • Active black mask display
  • Illuminated control buttons
  • PLL synthesized tuner with 30 station presets
  • USB port / Front panel AUX input
  • Compatible with audio output of iPod® and other MP3 players
  • ID3-Tag display
  • Quartz digital clock
  • Separate bass and treble
  • Balance and fader controls
  • RCA outputs
  • Loudness
  • Stereo/mono & local/distance switches
  • Output power: 60W x 4 channels

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