Electro-Harmonix Octave Multiplexer Pedal Review (June 2024)


Last updated on June 11, 2024 11:52 pm Details


In this review post, we’re going to be discussing the Electro-Harmonix Octave Multiplexer XO Pedal, including an overview of its unique features.

Product Description

The EHX Octave Multiplexer Analog Sub-Octave Generator delivers deep, phat bass tones one octave below the notes you play. Two separate smoothing filters enable you to tailor your sub-octave signal to the exact bass sound you desire, separating the Octave Multiplexer from other octave devices. Run your vocals through it and sound just like Ike Turner. This is a monophonic device and works only on single notes.

Product Features

  • True bypass
  • 9V battery included
  • Sub-octave is switch-selectable
  • Tough and compact die-cast chassis
  • Hi and low filter controls let you tailor the perfect bass tone
  • Create very smooth and natural bass tones one octave below your played note

Pros & Cons


  • Strong build quality
  • Affordable Price
  • Extremely reputable
  • Value for money
  • Terrific sound quality
  • Favorable consumer review testimonials
  • Best suited for recording and live performances


  • Not good for musicians who want to keep their tone’s high end
  • Not recommended for musicians who are concerned about losing their original amp output when using a heavy,’ murky’ bass effect.

Electro-Harmonix Octave Multiplexer Pedal Demo

Our Verdict

When it comes to bass emulators, this is a clear winner in our opinion. Not what we’d call an octave pedal in the traditional sense, but definitely one to get your hands on if you’re seeking a bass sound. Overall, the pedal may be too huge for some, but Electro Harmonix certainly required a larger pedal to accommodate all of that bass and octave awesomeness!

While it didn’t take first place in our octave pedal guide, it is without a doubt the best bass octave emulation we’ve come across, and at a very reasonable price.

Where to Buy

The best place to buy this product has to be Amazon, due to their competitive pricing and fantastic customer service.

Electro-Harmonix Octave Multiplexer XO Pedal

as of June 10, 2024 9:56 am

Pricing History

Price History for Electro-Harmonix Octave Multiplexer XO Pedal


Current Price $189.99 June 10, 2024
Highest Price $189.99 November 18, 2023
Lowest Price $99.99 October 10, 2023
Since September 30, 2023

Last price changes

$189.99 November 18, 2023
$99.99 October 10, 2023
$186.72 September 30, 2023

Last updated on June 10, 2024 9:56 am

Buyers Guides This Product Is Featured In

Best Octave Pedals

Additional information

Item Weight

1.06 ounces

Product Dimensions

6.25 x 3.2 x 5.65 inches

Item model number


Is Discontinued By Manufacturer


Date First Available

April 13, 2004

Color Name


Number of Strings



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