Boss 644UA/RDS644UA

$79.99 Released April, 2010

Product Shot 1The Boss 644UA/RDS644UA is a 1-DIN head unit built to play CDs and MP3 files. This is an expansion of the Boss 642CA/RDS642CA model, with 60 watts of output running to each of the 4 channels and front-panel USB and Memory Card ports that enable the use of MP3 storage devices for playback.

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The AUX port will also work with an iPod or other compatible portable audio device. Expansion with other amplifiers is accommodated by 5 volt preamps, and the sound system can be adjusted with separate bass and treble controls as well as a number of EQ presets. The radio can also be switched from USA to European radio frequencies and has 24 station presets available. The CD player has a number of technologies in place to avoid skipping, and can read burned disks as well as MP3 files.


  • Single-DIN mounting
  • Full detachable front panel
  • 5 Volt preAmp output
  • Oversized, active black mask display
  • Illuminated control buttons
  • PLL synthesized tuner with 24 Station presets
  • Switchable USA/Europe radio frequencies
  • Front panel auxiliary input
  • Front Panel USB and SD Memory Card ports
  • 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
  • Local/distance switches
  • Wireless remote control
  • Output power: 60W x 4 channels

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