Chandler Limited LTD-2, Mono Compressor, Attack, Release, Treshold and Gain Make adjustable, VU-Meter, XLR In- and Outputs, Dimensions: 19"/1U per LTD2. Requires PSU-1 external power supply (order code: 194566) and 2x Connection Cable Module-PSU, 4pol XLR (order code: 235927)