ELECTRO HARMONIX DELUXE OCTAVE MULTIPLEXER oos Channels B & C pass

Channels B & C pass through the spring reverb

In the Internal Loop position the feedback path goes directly from the output of the delay back to the input

+feedback produces resonant peaks at short delays whilst - feedback gives a notch filter type of response

but sometimes when just turning the fine tune

it was used during the recording of Dark Side Of The Moon

ELECTRO HARMONIX DELUXE OCTAVE MULTIPLEXER oos Channels B & C passAn original mains powered Electro Harmonix Deluxe Octave Multiplexer in very good working order and excellent cosmetic condition. It's just been serviced and calibrated so is ready for action. As is the case with all vintage analogue octave pedals, this is monophonic only (single notes no chords) and requires quite precise playing to achieve good results. Where it really shows it's class is in the fuzz section: pure seventies hairy filth and richness.