Model TCL-2 COMPRESSOR / LIMITER / GATE AUDIO INPUT Type: Active balanced XLR and 1/4JACK Impedance: Balanced: 50K Ohm - Unbalanced: 25K Ohm Operating Level: +4dBu /-10dBV Maximum input level: Balanced and Unbalanced: +21 dBu CMRR: >55dB @1KHz