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Westminster Effects Calvin Compressor

$149.99 Price Tier: Standard

5.0 (1)

1 Review

1 wishlisted

2 saved

Page last updated Mar 25, 2026

Pricing and availability

We compare 600+ stores and found this item at 2 stores. Prices updated March 25, 2026.

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Price

$149.99

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4.0 (2)

$149.99 5 available New

$79.00 1 available Used

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Average Price: $126

Standard/Professional

$50

$201+

Price Tier

In the Compressor Effects Pedals category, Westminster Effects Calvin Compressor is priced in the Standard/Professional range. This is quality gear at a fair price point, suitable for beginners, hobbyists, and pros alike.

Budget

Standard

High-end

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Description

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There is no pedal in the world not meant to bring us good tone. The Calvin Compressor features an OTA-based, transparent circuit and is a great start to your chain and is ultimately tweakable with five knobs and a voicing switch to attenuate treble frequencies, making it a great fit for electric, bass and acoustic guitars. Also features soft touch relay bypass.

Product specs

Brand	Westminster Effects
Model	Calvin Compressor
Finish	Orange
Year	2020
Categories	Compressor Pedals

FAQs

What type of compression does the Westminster Effects Calvin Compressor provide?: The Westminster Effects Calvin Compressor offers smooth, transparent compression, helping to even out dynamics without coloring your tone, making it ideal for both subtle and pronounced compression needs.
Is the Westminster Effects Calvin Compressor suitable for live performances?: Yes, the Calvin Compressor is designed to maintain your guitar's clarity and sustain, making it a reliable choice for live performances where consistent tone is crucial.
Can the Westminster Effects Calvin Compressor be powered by a battery?: No, the Calvin Compressor requires a standard 9V DC power supply, which is not included, for operation.
Does the Westminster Effects Calvin Compressor work well with both single-coil and humbucker pickups?: Yes, the Calvin Compressor is versatile and works effectively with both single-coil and humbucker pickups, maintaining tonal integrity across different guitar types.
How does the Westminster Effects Calvin Compressor handle high-gain settings?: The Calvin Compressor is designed to handle high-gain settings without introducing unwanted noise or distortion, providing a clean, controlled sound even at higher levels.

Videos

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Westminster Effects Calvin Compressor - Demo

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Reviews

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PROS

Offers extensive control with attack, release, threshold, and voice switch options
Based on the Ross/Dynacomp family, adding modern enhancements
Provides both classic squish and clean boost capabilities
Handmade quality in the USA
Packs significant value for its price

CONS

Some units may have poor build quality, causing connectivity issues
Lack of customer support from Westminster Effects

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Westminster Effects Calvin Compressor.

User experience

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Owners appreciate the Calvin Compressor’s optical compression for its subtlety, making it a good choice for those who prefer a less aggressive effect.
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Some users report the Calvin Compressor as an "always on" pedal, highlighting its reliability and consistency in various musical settings.
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Comparisons

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The Calvin Compressor is considered a step up from budget options like the Mooer Yellow Comp, offering a more satisfying experience for users transitioning from cheaper models.
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The Calvin Compressor is notably preferred over cheaper models for its nuanced tonal control, making it a popular choice among players seeking to upgrade from entry-level options.
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Use cases and applications

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The Calvin Compressor fits well within diverse pedal setups, complementing both classic overdrive pedals like the Ibanez Tube Screamer Mini and dynamic effects like the Boss AW-3 Dynamic Wah.
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Features and functionality

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Known for its distinctive artwork featuring John Calvin, the pedal appeals to users both for its aesthetic and its performance.
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The Calvin Compressor is effectively integrated in pedalboards with complex signal chains, demonstrating compatibility with diverse effects including overdrives and delays.
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Setup and maintenance

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Users suggest checking for grounding issues if experiencing static noise when not touching guitar strings, indicating potential electrical interference in apartment settings.
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5.0 out of 5

Based on 1 Review and 1 Rating

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daryl_skinner

629

about 5 years ago

Best bang for the buck compressor pedal out there.

The Calvin Compressor circuit is derived from the Ross/Dynacomp family of OTA compressors. However, it adds an extended control scheme to fine tune the compression. The inclusion of attack, and threshold controls and voicing switch make it way more usable than other compressors. It's price isn't that high either, and to be honest it packs a huge bang for the buck.

Roles:

Guitarist

Genres:

Metal Hard rock Speed metal