Keeley 4-Knob Compressor Pedal

Keeley 4-Knob Compressor Pedal

Keeley 4-Knob Compressor Pedal

Keeley 4-Knob Compressor Pedal

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Product Highlights

  • OTA Compressor Pedal
  • For Guitar and Bass
  • Also Works as an Outboard Studio Effect
  • Sustain, Attack, and Clipping Controls
  • Level Control for Makeup Gain/Boost
  • True Bypass
  • Handmade in the USA
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Keeley 4-Knob Compressor overview

  • 1Description

If you need a rack compressor that fits on your pedalboard, look no further than the Keeley 4-Knob Compressor Pedal. Using a classic OTA circuit, Keeley's compressor design has a compression envelope that works well for guitar and bass, but can also be leveraged as an outboard effect in the studio for drums, vocals, or just about anything else. Use the Sustain and Attack controls to tailor the compression to your instrument, while the Clipping control reduces unwanted distortion. The Level knob works double duty as a makeup gain control, which becomes a boost as you turn the knob past unity gain. True bypass switching takes the pedal's circuit completely out of your signal chain to ensure that your signal passes through unmodified while the pedal is disengaged.


Sustain: This is the main compression control and it adjusts the compression ratio which limits or squashes your signal
Attack: Adjusts how fast the compressor recovers from louder signals; higher settings are useful for players using high-output instruments, and lower settings allow lower output instruments to bloom
Clipping: Limits the amount of signal going to the compressor in order to combat distortion from high-output sources or over-aggressive compression settings
Level: Controls the final output level of the compressor. The unity setting makes up for gain lost due to compression. Higher settings can be used as a signal boost
In the Box
Keeley 4-Knob Compressor Pedal
  • Limited 1-Year Warranty
  • Table of Contents
    • 1Description

    Keeley 4-Knob Compressor specs

    Input 1 x 1/4" instrument TS
    Output 1 x 1/4" instrument TS
    Power Supply 9 VDC: 9 V battery
    9 V power supply (center negative)
    Power Draw >3 mA
    Dimensions Width: 2.4" / 6 cm
    Height: 4.4" / 11 cm

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