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MF MD HG01 Electric Guitar Month 06-19-18

Tech 21 Boost Chorus Guitar Effects Pedal

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Product H73105
Product Price $0.00
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The evolution of the chorus effect seems to have gotten stuck in '80s pop, along with over-processed guitars, cheesy synths and popped collars. Rest ...Click To Read More About This Product

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Take your chorus effects out of the '80s and into the glory days of the '70s!

The evolution of the chorus effect seems to have gotten stuck in '80s pop, along with over-processed guitars, cheesy synths and popped collars. Rest assured, the Tech 21 Boost Chorus ain't that kind of chorus. When Tech 21 designed the Boost Chorus pedal they went back to the '70s, when choruses were rich, smooth, and manly. They figured out what made these vintage stompboxes sound so good and poured that knowledge into a new kind of chorus pedal with greatly improved performance and a whole slew of never-before-heard sounds. Slapback, echo, flanging, and doubling effects are all possible from the modestly named Boost Chorus pedal.

Designed primarily for guitar (although it sounds great with everything else), the Boost Chorus features unprecedented tweakability. Six control knobs let you easily dial in the right tone, speed, and depth of the effect. The Mix control allows a 0-100% wet blend of the effect, while the Level control offers increasing amounts of boost to compensate for the volume loss perceived with chorus effects. The final control is the Pre-Delay, which alters the chorus' range to produce effects from flange/chorus to regular chorus and chorus/doubler. The secret weapon is the Multi Voice switch. Engage it to bask in the multiple chorus voices of an Ensemble-style effect.

  • 100% analog Mix, Tone, and Level controls for warm, organic sounds
  • Mix control ranges from 100% dry to 100% wet
  • Speed and Depth controls
  • Pre-Delay adds delay to the chorus effect before mixing it back in, achieving a wide range of chorus effects
  • Multi Voice switch adds dimension and thickens the sound with additional choral voicings
  • Buffered bypass eliminates the shortcomings associated with true bypass (pops/clicks and high-end loss when multiple pedals are connected together), as well as signal loss associated with other types of switching circuits
  • Custom silent-switching actuator
  • Heavy-duty, all-metal construction
  • Operable with 9V battery (not included) or optional DC power supply (Tech 21 Model DC2)

An effect that should be on every guitarist's pedal board done the right way! Order your Boost Chorus now!


Review Snapshot

by PowerReviews
Tech 21Boost Chorus Guitar Effects Pedal

(based on 2 reviews)

Ratings Distribution

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Reviewed by 2 customers

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(2 of 2 customers found this review helpful)


Thumbs up! Organic analog chorus with wide range ajustability

By Rock Lobster

from NYC burbs

See all my reviews

Comments about Tech 21 Boost Chorus Guitar Effects Pedal:

This one hits the mark in terms of my taste. Organic & warm , no perceived volume drop. The right amount of depth, sparkle & no de tuned mud if you take the time to adjust everything.
Had my first jam with this pedal and things went great. I am able to get the chorus sound I have been hunting for. I like a bright tone, lots of depth, couple clicks of level boost, some pre delay & mix half way. Eureka! that's my sonic vision for a chorus guitar effect. Adjustability options paid off!

Plus it's warm analog & organic sounding with a suttle underneath background flange sweep - to my ears. I do not care for the metallic synthetic type varity of chorus sounds.

Only minor pet peeve - wish the jack & power socket were up top. I run a small board this eats up space for part of another small foot print pedal. Not a show stopper though.
Still early so far so good knobs feel nice and not sloppy.
Solid value one gets many different chorus types in one pedal


Lush Chorus sounds

By stratsncats-meluv

from Jacksonville, Florida

About Me Experienced

See all my reviews


  • Compact Design
  • Excellent Sound Quality
  • Good Selection Of Effects
  • High quality
  • Responsive
  • Versatile


    Best Uses

      Comments about Tech 21 Boost Chorus Guitar Effects Pedal:

      After extensive research and demos I chose the Boost chorus and I am completely satisfied with that choice. Stays true to amp's basic sound (tube 50w) and no interference with noise. Silent action switch, high quality all the way to the tin it came packaged in. IMHO best chorus I've heard. Also I like how the mix behaves like a compressor, to a degree. Pedal sounds good clean and sparkly or O.D/ Distortion on. Wide range of settings. Got a great price at M.F.

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      See All Tech 21 Chorus, Flanger & Phaser Effects Pedals
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