The inputs/mic preamps/busses are completely unmodified from their original 1969 class A design. Precision Audio test shows a flat frequency response from 9.5Hz to 52kHz (1dB).
Enhancements include:
New caps, new switches, new P&G faders
New bus routing modules (34x24x24 config)
Six variable effects sends
Four stereo cue sends
Three way mic preamp routing switch: signal to tape direct from preamp, post EQ, or post fader/post EQ
Modernized control room module
Additional 200 patchpoints on new external bay
Custom stand and matching producer's desk created by Christophe Leroux