Electro-Harmonix XO Octave Multiplexer
Synthesizes notes one octave below those you're playing for an amazing range of effects.
The Electro-Harmonix Octave Multiplexer is finally back, generating deep, phat bass tones one octave below the notes you play into it. Dividing the Octave ... read more
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Josh Homme uses the Electro-Harmonix Octave Multiplexer Pedal in his guitar gear setup for the Queens of the Stone Age. more

He used or at least had an Octave Multiplexer in the studio during the recording sessions for Tales from the Punchbowl and Pork Soda. more

Bassist Thomas Warmsley's pedalboard includes the Electro-Harmonix Octave Multiplexer pedal. This photo was taken at a [Temples](https://... more

> The EH Octave Multiplexer is one of the few stock pedals in my collection. It sounds great with fuzz and phase for mean single note sol... more
Reviews
Trusted musician and artist reviews for Electro-Harmonix XO Octave Multiplexer
Based on 3 Reviews

best way to add bass
got this to replace a Boss Octave pedal, this is so much more organic, with filters on either end of the effect

one small complaint
of course this is not made for chords but sustained notes do produce a odd wahing like waffling off sound
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Details
Description
Synthesizes notes one octave below those you're playing for an amazing range of effects.
The Electro-Harmonix Octave Multiplexer is finally back, generating deep, phat bass tones one octave below the notes you play into it. Dividing the Octave Multiplexer from other octave devices are the two separate smoothing filters that enable you to tailor your sub-octave signal to the exact bass sound you desire. Run your vocals through the Octave Multiplexer pedal and sound just like Ike Turner.
Specifications
- Controls: High Filter, Blend, Bass Filter.
- Sub On/Off switch.
- 1/4" input, dry output and effect output.
- DC power input for battery replacement.
edited almost 3 years ago
a classic that's maybe not as great as the mutron octave divider
to me the mutron octave circuit is the gold standard of 70s analog octave effect... that said the EHX multiplexer tracks poorly and has a relally clangy unantrul timber that's great as more of a splatty and ring moddy special effect sometimes. I'd still like to have a mutron but they're pricey thanks to neil young. I ave an old one of these and like many of my ehx pedals I don't like using them much because of the boxes and switches. this is another tonesucker too... but when recording its got a certain sumthin' sumthin'. for something analog but more hifi ona budget try an arion octave from the 80s . The plastic case is no flimsier than the old EHX sheet metal boxes and the arion sounds really good, tracks great... but as a psycho-grade special effect the multiplexer is super fun. Velcroey bass and claging high harmonics galore are in there when you get the high filter and blend setup right with the sub engaged. Too polite? try playing some doublestops instead of single note runs. The pog is comparatively polite. More useful? probably. But not to me.