
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
$184

Brand New
$169.99

Brand New
$149.99

Brand New
$149.99

Brand New
$149

Brand New
$120

Discover pedals with similar features or sounds to the Calvin Compressor. This section leverages data to suggest alternatives that complement or expand your pedalboard. Ideal for exploring related sounds or finding a pedal that matches your specific needs.

Ground Control Audio
Noodles

HomeBrew Electronics
CPR

BBE
Sonic Stomp

Walrus Audio
Mira Compressor Pedal

Visual Sound
V3 Route 66

BBE
Varicomp 3080 Compressor

JangleBox
JangleBox

EMMA Electronic
TransMORGrifier

Dr. Green
Life Support

MXR
M291 Dyna Comp Mini Compressor Pedal

MXR
M102 Dyna Comp

Joyo
JF-10 Dynamic Compressor

Demeter
Compulator Pro

J. Rockett
IQ Compressor

Frantone
Sandwich

Analog Alien
Alien Comp
Check out the latest news and articles from around the pedal world.

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