The Boss 644UA/RDS644UA is a 1-DIN head unit built to play CDs and MP3 files.

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The 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. 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 iPodĀ® 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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