Control unit with USB / SD / MP3 player, FM tuner, Bluetooth connection and remote control. The LED display shows the track number. Includes universal balanced microphone input (combo connector: XLR / Jack 6.3 mm). It can replace the control unit to the radio exchange thanks to the microphone input. It has separate volume control and separate 2-band corrections for the player and microphone input. It is designed for mounting in a 19 "rack, it only takes 1U. It also contains 1x AUX stereo input (3.5 mm jack), 4x line stereo input (2xRCA). The device has a stereo balanced output (2x XLR), stereo unbalanced output (2x jack 6.3 mm and 2x RCA).