- 2520 Opamp, API 512 C mic preamp, 527 compressor, redesign of the famous 550A EQ (3 bands, each with 7 selectable frequencies) - Stereo bus with rotary control solo, SIP, mute, insert, polarity and compressor link - Free patching on the back - External fader jack - Three 7 segment LED VU displays - Int. power supply THIS ITEM IS CURRENTLY NOT AVAILABLE YOU CAN CONFIRM THIS INFORMATION BY CLICKING ON ITEM