
Anthony Easton
The Calvin Compressor by Westminster Effects features an OTA-based, transparent circuit, making it suitable for electric, bass, and acoustic guitars. It offers tweakability with five knobs and a voicing switch to attenuate treble frequencies. The pedal also includes a soft-touch relay bypass.
Technical Specifications:
- Power Requirements: 9V DC center negative, 47mA
- Measurements: 4.4" x 2.3" x 1"
- Weight: Approximately 0.31 kg (0.68 lbs)
- Handmade in South Carolina, USA
- Battery operation is not supported
- Power plug: 2.1 mm x 5.5 mm, (-) inner polarity
The Calvin Compressor is designed to enhance tone and provide precise control over compression, making it a versatile tool for musicians seeking to refine their sound.
Watch the latest video demos and reviews for the Calvin Compressor from YouTube. Stompbx updates this every six months to reflect the most popular reviewers and guitar pedal demos for each pedal.

Below are live Reverb listings for the Westminster Effects Calvin Compressor from Reverb. Stompbx automatically aggregates current offers to give you a quick look at available models, conditions, and prices. Perfect for comparing options and making an informed purchase.

Brand New
$119

Brand New
$169.99

Brand New
$185.28

Brand New
$149.99

Brand New
$149.99

Brand New
$149

Brand New
$120

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Anthony Easton
Anthony Easton
Anthony Easton
Anthony Easton
Anthony Easton
Anthony Easton
Anthony Easton
Anthony Easton
Anthony Easton
Anthony Easton
Anthony Easton