Rheem Key Bass

via this auction

"Famous gnarly bass keyboard synth. Old "toaster" style AC power inlet replaced with cord. No lid. Finish generally EXC- but with a few hairline cracks. Keys below lower E and above upper G perform erratically. Bass booster slider works fine and adds considerable volume and girth. Tone switch works fine. Fuzz switch works fine. Mode switch works fine but the percussion mode is not a desirable effect, it results in a very short chopped note so I never have used it. Decay switch works but does not have a noticeable effect on the sound except at loud volumes. This synth sounds best (in fact it sounds great) on the "bright" tone mode with the "bass booster" slider full up for all notes between low E and upper G." inside a Rhreem Key Bass