Behringer Autocom Pro MDX1400, 2-Channel Expander/Gate/Compressor/EnhancerCondition:* Used, Removed From Service In Working Condition.* Tested Fine For Basic Operation. As Pictured.Additional Notes:* IKA (Interactive Knee Adaptation) compressor concept combines the advantages of “hard knee” and “soft knee” characteristics* Attack and Release times controllable automatically or manually* Switchable high-pass filter in control signal path avoids low-frequency signals from dominating compressor* Compression characteristics switchable between IKA and “hard knee” characteristics* IRC circuit in expander/gate enables “inaudible” elimination of disturbing noise signals* Dynamic Enhancer for compression dependent equalization* Extremely low-noise operational amplifiers and high-grade VCAs* High-quality detented potentiometers and backlit switches* Stereo Couple function selectable with real totaling of RMS output* Accurate 12-segment LED meters for input level, output level and gain reduction* Switchable sidechain input with sidechain monitor function* Operating level switchable from +4 dBu to -10 dBv* Servo-balanced, gold-plated XLR and 1/4″ TRS connectors* High-grade output transformer Behringer OT-1 can be retrofitted* High-quality components and exceptionally rugged construction ensure long lifeBehringer MDX1400