ART Headamp 6, 6 Channel Headphone Amplifier, Six independent headphone amplifiers with high output power, Possibility of simultaneous use of up to 18 headphones, Three headphone outputs on every channel: one on the front side, two on the back side, Stereo aux input on every channel (front side), balance/mix control on every channel featuring twofold usage, More selectable monitor settings on every channel: Stereo, mono left, mono right, mono left + right, 4 Segment LED level indicator and volume control on every channel, Level control and 8 segment LED level indicator on the main input, Direct input on the front side, XLR- and jack inputs and -outputs (to connect several devices), Design: 19"", 1 U