Anyone ever worked on one of these unit? Tape-athon Model 900. Electronics from a reel to reel used as preamps. Simlar vintage to Ampex 440.
I can't find any schematics anywhere online, any chance anyone here has them or knows anything about these units? Both are working, but one has a bit of hum.
I can't find any schematics anywhere online, any chance anyone here has them or knows anything about these units? Both are working, but one has a bit of hum.
