Uptown moving fader automation systems did not include a mute circuit, and so it was up to the techs installing said systems to supply their own.
When Echo Mountain Recording Studio hired Tech Mecca, Inc. to install Uptown Automation in their Neve 8068 console, John Klett designed a compatible silent opto mute circuit, and hired Eisen Audio to draw the PCBs. We added an optional discrete transistor buffer circuit which would’ve blended in nicely with the Neve amps.
