Maestro Rhythm King MRK-4 Guitars but is in really good

but is in really good order for a unit that's around 30 years old and has had three knobs/caps replaced (photos to follow)

Power supply smoothing capacitors & diodes replaced

Completely original including Goodmans speaker

a million points if you can identify all the gear that’s running into it

My only disappointment is that it doesn't model the multi-head patterns

Maestro Rhythm King MRK-4 Guitars but is in really goodUncommon beatbox which features the superb and unique modulation section which allows you to groove an external signal (e. g. guitar, synth etc) using the on board rhythms. This is very effective and a great creative tool.