- Sensitivity (on 5 knob version)
- controls the amount of fuzz
- Mix (Sub-Harmonix on 5 knob version)
- controls the mix of the -1 octave and -2 octaves signals
- controls the tone (bass/treble control?)
- mixes the clean signal with the effected signal (not on all models)
- Fuzz On/Off (4 knob version)
- Turns the fuzz on/off
- Bass On/Off (5 knob version)
several models: EH-1325 with 4 knobs, EH-5950 with 3, 4, 5 knobs (?)
No forum threads about this effect yet.
- Electro-Harmonix Octave Multiplexer
- Electro-Harmonix POG Polyphonic Octave Generator
Here's some code to post a link with image on forums, eBay, websites,...
electroharmonix ehx eh electro-harmonics electroharmonics octave multiplexor