My 1970's Summer Project

In the late 1970's, I spent a good amount of time, effort and money to build this beast to mate up with my Otari MX5050 8 track reel to reel analog tape recorder.

Machined all the panels and hardware along with etching the pcb's at home.
Was designed to use 990 opamps running on biploar 24 vdc rails.

Very few affordable "compact" mixing consoles were available back then.

Still have this collecting dust in the garage and am now considering retrofitting it with valves.
Maybe, maybe not...