MXR MX-134 Stereo Chorus

$225.00 Price Tier: High-end

This product is Vintage or Discontinued

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Page last updated Jul 03, 2026

Pricing and availability

We compare 600+ stores and found this item at 1 store. Prices updated July 3, 2026.

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Price

5.0 (7)

$225.00 16 available Used

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Average Price: $213

High-end/Boutique

$60

$201+

Price Tier

In the Chorus Effects Pedals category, MXR MX-134 Stereo Chorus is priced in the High-end/Boutique range. This premium gear is built to very high standards and offers premium features.

Budget

Standard

High-end

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Description

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The MXR MX-134 Stereo Chorus is your ticket to lush, vibrant soundscapes that breathe life into your guitar's tone. This vintage analog chorus pedal is revered for its ability to deliver rich, textured modulation with exceptional clarity. Perfect for both live performances and studio recordings, it offers a dynamic range that can transform your sound from subtle shimmer to full-bodied swirl.

Designed with true stereo outputs, the MX-134 ensures you capture the depth and dimension of your performance with precision. The intuitive controls for Manual, Speed, and Width provide endless possibilities for crafting your unique sound. Whether you're looking to add a gentle wave to your clean tones or a dramatic, swirling chorus to your solos, this pedal adapts effortlessly to your creative vision.

Musicians love the MX-134 for its reliability and durability, making it a staple on pedalboards around the world. It's a chorus pedal that stands the test of time, offering the classic warmth and character that only an analog design can provide. Dive into a world of sonic exploration with the MXR MX-134 Stereo Chorus, where every note is an opportunity to shine.

Key Features:

Vintage analog chorus design
True stereo outputs for rich soundscapes
Manual, Speed, and Width controls for versatile sound shaping
Renowned for its clarity and depth
Ideal for live and studio applications

Product specs

Brand	MXR
Model	MX-134 Stereo Chorus
Finish	Yellow
Year	1979 - 1984
Made In	United States
Categories	Chorus and Vibrato
Pedal Format	Standard

FAQs

What power supply options are available for the MXR MX-134 Stereo Chorus?: The MXR MX-134 Stereo Chorus can be powered by two 9-volt batteries, an 18-volt adapter, or through MXR's DC Brick™, Iso-Brick™, or Mini Iso-Brick™ power supplies.
Is the MXR MX-134 Stereo Chorus suitable for bass guitars?: Yes, the MXR MX-134 Stereo Chorus is designed to preserve low-end frequencies, making it suitable for use with bass guitars as well as electric guitars.
What are the main controls on the MXR MX-134 Stereo Chorus?: The MXR MX-134 Stereo Chorus features controls for rate, width, and intensity, allowing you to shape the depth and speed of the chorus effect to your preference.
Does the MXR MX-134 Stereo Chorus offer true stereo output?: Yes, the MXR MX-134 Stereo Chorus provides true stereo output, allowing you to create a wide and immersive sound field when connected to two amplifiers or stereo inputs.
How does the MXR MX-134 Stereo Chorus affect the guitar's tone?: The MXR MX-134 Stereo Chorus delivers lush analog chorus tones, enhancing your guitar's sound with rich, swirling effects while maintaining clarity and definition.

Videos

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Matt Thomas Overdrive

Vintage Analog Stereo Chorus Comparison: Boss Chorus Ensemble CE-1 & MXR Stereo Chorus MX-134

Matt Thomas Overdrive

Reviews

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PROS

Delivers lush, crystal clear chorusing, especially in stereo mode
Built like a tank with durable construction
Features Reticon R5101 chip for unique, thick sound
Internal dip switch allows setup for line level in loops
Provides a slight volume boost when engaged
Easily converted to 18v DC for reduced hum
Notably beats tone of vintage Boss models in certain setups
Minimal tone loss compared to many vintage pedals

CONS

Large footprint takes up significant pedalboard space
Slight noise floor may require adjustment
Original asking prices often exceed fair market value
Lacks true stereo inputs

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about MXR MX-134 Stereo Chorus.

Features and functionality

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The MXR MX-134's second output is phase inverted, enhancing stereo imaging but causing issues when mixed to mono, where the chorus effect can disappear.
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Unlike the MXR M234, the M134 includes EQ boost and cut options, affecting only the chorus audio, not the through audio.
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The MX-134 has a width control for the LFO sweep, allowing for a broad range of modulation from deep movement to an almost still effect.
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The mix knob on the MXR Analog Chorus offers versatility, allowing users to dial in sounds similar to the Boss CE-2.
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Build quality

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The pedal operates at 18 volts, contributing to its high headroom, and it includes the necessary adapter.
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Use cases and applications

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The MX-134 is noted for its bright, shimmering tone, making it suitable for adding sparkle without being overly lush.
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There's a bass boost switch that significantly enhances bass applications, offering more depth and presence.
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Setup and maintenance

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A malfunctioning MXR Stereo Chorus can sometimes be attributed to a burst capacitor near the transformer; replacing it with a modern 400uF filter cap is recommended.
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Ensure the DC jack wiring isn't inverted; incorrect wiring can short the pedal, especially when using a center negative adapter.
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Mods and upgrades

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Modifying the pedal to run on 9v using a Madbean charge pump (e.g., Road Rage Breadbuddy) can make it more pedalboard friendly.
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Using a plastic DC jack is advisable to avoid connecting the positive supply to the enclosure, which can occur with metal jacks in center negative setups.
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Comparisons

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The MXR Analog Chorus is noted for significant tone loss when bypassed; users suggest using a true bypass looper to maintain high-end clarity.
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The Boss CE-2W is praised for maintaining resale value, keeping 70-80% of its initial cost if bought used.
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The MXR is described as a good deal for the price, but the Boss CE-2W is highlighted for superior sound quality.
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