Fumana TR-707 — Sub – square wave

— Sub – square wave 2 octaves down to original pitch

I've found by using passive mixers I'd hear drop outs or "nulling" of signal which sounds similar to phase cancellation

Power supply: +/- 12 VDC (reverse-polarity protected

Or you can have anything in between

Fumana TR-707 — Sub – square waveThe FUMANA is an all analog dual filter bank with various control to access dynamically these bands. Each filter bank is composed of an array of 16 independent 48dB oct bandpass filters. Having two identical filter arrays, allows you to use one of those for spectral analysis (of a modulator signal) and the other for spectral re synthesis (of the main signal). Each array is sub grouped in odd and even bands (numbering these increasingly from 1 to 16