Unit is fully functional and is in good used condition. Cassette is playing through headphones. Back bottom right part of case is gone. (11th photo).
Yamaha M80 is an Audiophile pure class A (+ auto to class AB) old-school analog power amplifier. This M80 was fully internal checked up with focus on preventative service to this particular Yamaha model.
This was pretty much the bible for outfitting bands and recording studios in 1984. microphones, signal processors, mixing consoles, tape recorders, guitars, keyboards, synthesizers, drums, amplifiers, pedals, sound components. it's all here.