Presonus ACP-88 8-channel Compressor/Limiter/Gate, 8 independent channels, each with Full-featured analog compressor/limiter, Sidechain send/return, 6-segment LED gain-reduction meter, full-featured gate, Bypass switch, Channel Link button (can link multiple channels), +4 dBu/-10 dBV operating-level switch, Input/Output For each channel (x 8 channels): 1 balanced 6,3mm TRS line input, 1 balanced 6,3mmTRS line output, 1 unbalanced 6,3mm compressor sidechain send-return, 1 unbalanced 6,3mm gate sidechain/key insert send-return, 2U 19” rack-mountable, rugged steel chassis, Internal power supply with standard IEC connector