Tech 21 Boost Chorus

$217.01 Price Tier: High-end

5.0 (1)

1 Critic Review

1 Review

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Page last updated Jun 11, 2026

Pricing and availability

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4.0 (4)

$217.01 1 available Used

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Average Price: $217

High-end/Boutique

$60

$201+

Price Tier

In the Chorus Effects Pedals category, Tech 21 Boost Chorus is priced in the High-end/Boutique range. This premium gear is built to very high standards and offers premium features.

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Standard

High-end

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Description

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The Tech 21 Boost Chorus pedal is a nostalgic nod to the golden era of guitar effects, capturing the essence of vintage '70s chorus pedals while delivering modern enhancements. This versatile pedal offers a seamless blend of classic warmth and contemporary control, making it a must-have for guitarists seeking to enrich their soundscapes. With its 100%-analog Mix, Tone, and Level controls, the Boost Chorus ensures you achieve warm, organic tones that are both authentic and adaptable. Whether you’re aiming for subtle shimmer or lush, expansive layers, this pedal provides the flexibility to shape your sound with precision.

Designed primarily for guitar, the Boost Chorus is not limited by instrument, inviting experimentation across your entire rig. Its six intuitive controls, including Speed, Depth, and Pre-Delay, allow you to craft a wide array of sonic textures, from flanging choruses to doubling effects. The innovative Mix control offers a full range of dry-to-wet blending, while the Level control compensates for volume changes, maintaining your desired output level.

A standout feature of the Boost Chorus is the Multi Voice switch, which unlocks a rich, ensemble-like chorus effect, adding depth and dimension to your music. Built with a heavy-duty, all-metal construction and a custom silent-switching actuator, this pedal is road-ready, ensuring durability and reliability in any setting. Whether you’re chasing vintage vibes or exploring new sonic territories, the Tech 21 Boost Chorus pedal provides a platform for creativity and expression.

Key Features:

100%-analog Mix, Tone, and Level controls
Mix control from 100% dry to 100% wet
Speed and Depth controls for fine-tuning
Pre-Delay for diverse chorus effects
Multi Voice switch for ensemble-style choruses
Buffered bypass for sonic integrity
Custom silent-switching actuator
Durable all-metal construction
Compatible with 9V battery or optional DC power supply

Product specs

Brand	Tech 21
Model	Boost Chorus
Finish	Turquoise/White
Year	2010s
Made In	United States
Categories	Chorus and Vibrato, Overdrive and Boost Pedals

FAQs

What type of power supply does the Tech 21 Boost Chorus require?: The Tech 21 Boost Chorus requires a standard 9V DC power supply, which is typical for most guitar pedals, ensuring compatibility with common pedalboard power setups.
Can the Tech 21 Boost Chorus be used with both electric and bass guitars?: Yes, the Tech 21 Boost Chorus is designed to work well with both electric and bass guitars, providing rich chorus tones that enhance the sound of either instrument.
What are the standout features of the Tech 21 Boost Chorus pedal?: The Tech 21 Boost Chorus features a unique Multi-Voice button for a more saturated chorus effect and a boost function to enhance your signal, providing versatility for various musical styles.
Does the Tech 21 Boost Chorus have true bypass switching?: Yes, the Tech 21 Boost Chorus features true bypass switching, ensuring that your guitar's tone remains unaffected when the pedal is turned off.
How does the Tech 21 Boost Chorus differ from other chorus pedals?: The Tech 21 Boost Chorus offers a built-in boost function and a Multi-Voice button, setting it apart by allowing players to achieve a broader range of chorus effects with added signal enhancement.

Videos

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Audiofanzine in English

Tech 21 Boost Chorus Video Demo [NAMM 2011]

Audiofanzine in English

Tech 21 Boost Chorus - Analog Chorus Emulator with Clean Boost

N Stuff Music

Tech 21 Boost Chorus

musictoyznetwork

Tech 21 Boost Chorus

Tech21nyc

Boost Chorus

bubu245

Tech 21 Boost Chorus: Gear Up

gearuptmntv

Reviews

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PROS

Mimics CE-1 convincingly, offering versatility beyond
Boosts signal without adding noise
Wide range of sounds from slow flange to vibrato
Highly tweakable with expansive range of delay times and depth options
Maintains instrument's dynamics well
High-quality components for lasting durability
Can achieve lo-fi BBD to contemporary sounds
Monoaural operation for focused sound output

CONS

Steep learning curve with complex adjustments
Not suitable for synthesizer use, especially for vintage string ensemble effects
Can produce a dark sound, lacking sparkle at high mix levels
High-end loss noted, requiring compensation
Mono output limits spatial chorus effects

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Tech 21 Boost Chorus.

Comparisons

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The Tech 21 Bass Boost Chorus is praised for its clean blend and compatibility with dirt pedals, reportedly outperforming the EQD Sea Machine.
Source
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The CE-2W is noted for having no bad sounds and can be used effectively on bass, especially in the CE-1 chorus setting, with a low rate and high depth.
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Users compare the Tech 21 Boost Chorus Bass to the EHX Bass Clone, with some preferring the latter for its affordability and features but noting potential noise issues.
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The Walrus Julia is noted to cut a lot of low end, making it less suitable for bass compared to the MXR Bass Chorus Deluxe, which retains low-end frequencies better.
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The Boss CE-2B is favored over the CEB-3 for its analog sound, suggesting a tonal preference despite the newer model's additional control options.
Source

Features and functionality

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The MXR Bass Chorus Deluxe offers a flange setting and a crossover feature to adjust between subtle and more pronounced chorus effects.
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Users report that the CE-5 chorus ensemble is effective when layered with dirt pedals, with the FX blend feature being highly regarded.
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The Tech 21 Boost Chorus Bass can emulate chorus, vibrato, and flanger-like sounds, offering versatility despite being discontinued.
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The Boss CE-5 is highlighted for its blend knob and non-true bypass design, offering flexibility for bass and guitar applications.
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The MXR Analog Chorus offers a robust build with extras such as stereo output and a flanger setting, praised for its range from subtle to intense effects.
Source

Use cases and applications

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The CE-2W has been used to replicate the Duff McKagan sound, with some users preferring it over other models for its consistent "impact."
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The Tech 21 Boost Chorus Bass is praised for its ability to integrate well within complex pedal setups, offering unique sound textures and maintaining its place on users' boards despite alternatives.
Source
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The Boss CE-2B from the late '80s is praised for maintaining low-end integrity and delivering an analogue vibe reminiscent of The Cure's sound.
Source

User experience

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Some owners have used the D.O.D. Ice Box chorus guitar pedal with basses and found it unexpectedly effective.
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Owners express loyalty to Tech 21 pedals, indicating a strong brand satisfaction, with several returning to their Boost Chorus Bass after trying other options.
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The EHX Bass Clone is frequently described as versatile and simple, making it a preferred choice for live performances in synth rock settings.
Source

Critic Reviews

Tech 21 Boost Chorus review | MusicRadar

musicradar.com

The Tech 21 Boost Chorus is a versatile pedal packed with features that offer a wide range of sound possibilities. Its richness and smoothness are praised, aligning with its '70s inspiration, but the claim of being "manly" sparks some debate. While it excels in tonal variety with its multiple controls, including a unique pre-delay knob, the lack of stereo output and a potentially problematic battery compartment lid are notable drawbacks. Overall, it's a capable tool for achieving diverse chorusing effects, making it a strong contender for those seeking that vintage sound.

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michael_s_ord

about 9 years ago

Supremely versatile pedal

This pedal runs the whole gamut of chorus sounds, from old-school, lo-fi BBD sounds, to contemporary metal sounds. With an expansive range of delay times, depth options, a wet/dry balance knob, and a wide range of speed settings, you can achieve most chorus and pitch vibrato sounds with some careful knob selection. You can even get so low-resonance flanger sounds with certain time settings. There is some high-end loss, but you can compensate for much of it by boosting the signal using the boost knob. Ultimately, this is a highly versatile tweaker's pedal. Note: it is monoaural. If you're looking for a stereo chorus pedal, look elsewhere.

Artist usage

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Her's

Guitarist, Bassist

Her's

Verified via YouTube

At minute 1:08 this pedal can be noticed at the front right side of Ste. It is the first pedal (the one which his guitar is directly plugged) of his set at that gig.

Michael Sweet

Guitarist

Boston

Verified via Vintage Guitar® magazine

"I’ve also got a Line 6 digital wireless, a delay pedal by Tech 21, the Tech 21 Boost Chorus, some Dunlop EQ pedals, and a ISP Decimator, which I love for noise reduction."