Don engineered and built his multi-channel board using Op-amps, fighting RF and ground loop problems during its development, having 24 channels with faders for volume and individual channel EQs including a "super-high" tone knob for vocal intelligibility (4KHz?).
Don engineered and built his multi-channel board using Op-amps, fighting RF and ground loop problems during its development. Having 24 channels with faders for volume and individual channel EQs, including a "super-high" tone knob for intelligibility (8KHz?).