I recently bought a Multivider from a famous musician. The unit works fairly well except some issues.
The 'soprano' circuit doesn't seem to work. If I turn it up I get a slight increase in hiss. If I mix the signal so it's only soprano I get a nasty weak, gated sound from the instrument. I'm told it's supposed to be a fuzz, not an octave up, but it doesn't sound like a (working) fuzz.. Also, I'm not sure what the knob does in the top left corner. It doesn't seem to effect the signal much except when at '0' the octave no longer works. Is this the 'effect level' control?
The third possible issue, is I noticed with the 'bass' or first octave down, sometimes when I hit notes it'll seem to jump UP an octave. At one point I thought it was the soprano circuit functioning intermittently but it doesn't seem to be affected based on where the 'soprano' switch or level control is set
The unit was repaired in 1976 from a sticker on it. That may have been the last service.
I opened the unit and noticed some electrolytics, and also what looked like some transistors.. I'm assuming germanium?? My guess is they went bad which is causing the malfunction(s) but does anyonewith more experience know what's up?