1U RACK 2 sections, each one featuring a stereo output with its own volume control One selector shared by both sources, can mix stereo channels changing to MONO the CD and radio output for applications that do not need stereo sound It can be installed into a 19'' rack 1U The CD player can play audio tracks and MP3 files from compact disc (CD, CD-R, CD-R/W) or USB drives (Flash memory stick with mp3 files) USP port on the front panel FM radio tuner (87.5 - 108 MHz) that can store up to 10 radio stations LCD display