4 Multi track Busses 1 Stereo Buss 4 Sends with pre/post at inputs 6 sends on monitor returns Jensen transformers Class "A" discrete circuitry Relay switching Phantom power switching, 20db pad and phase reversal Same mic-pre/eq circuit as the 52270B 10 band eq withhigh and low pass filters Compressor on each main input Continuously variable boost and cut: +-16dB Stereo in place solo Channel mute. 60mm long throw faders. Direct channel outputs Terminates on DB25 Connectors Illuminated vu meters