Electro-Harmonix Bass Preacher Compressor/Sustainer Effect Pedal GUITAR COMPRESSOR PEDALS
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Electro-Harmonix Bass Preacher Compressor/Sustainer Effect Pedal


  • $125.00

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Electro-Harmonix Bass Preacher Compressor/Sustainer Pedal

Designed primarily for electric bass, the Bass Preacher from Electro-Harmonix is a compressor/sustainer in a compact form factor, the pedal measuring 2.8 x 4.5 x 2.1”. It’s designed to facilitate anything from subtle shaping to extreme adjustments in the dynamic range of your bass playing. The level of compression or sustain is achieved mainly with two parameters: The Sustain knob and the Attack switch.

The Sustain knob dictates the amount of compression you’d like to apply to your sound, while the Attack switch adjusts the attack/release settings, allowing more of your transients to come through for a plucky sound, or squashing your notes more quickly for a flatter, denser timbre. You’ll find fast, medium, and slow attack settings. Whatever amount of gain reduction you achieve, you can use the Vol knob to adjust the amount of makeup gain to reach a desirable level.

This pedal provides an input sensitivity range from -10 to +2 dBu, which makes the Bass Preacher suitable for use with active and passive basses alike. It also works well for guitar, providing a more subtle and transparent effect than typical guitar compressor pedals offer. With up to 21 dB of gain reduction, you’ll have more than enough room to achieve the compression you desire. True bypass circuitry ensures that in bypass mode, your signal is truly unprocessed. This is a mono pedal, with one 1/4” instrument input and one 1/4" instrument output. It runs on the included 9V battery, though it will also work with the separately available Electro-Harmonix 9.6 VDC 200mA power supply.


  • SUSTAIN Knob: This control sets the amount of compression
  • VOL Knob: Use this control to adjust the amount of makeup gain
  • ATTACK Switch: This sets the timing of the attack/decay curve


  • Dynamic Control for Electric Bass
  • Up to 21 dB of Gain Reduction
  • Subtle or Extreme Compression
  • For Active and Passive Basses
  • 3 Attack Settings
  • Sustain and Makeup Gain Controls
  • Included 9V Battery
  • True Bypass Circuitry


  • Audio Connections: 1 x 1/4" instrument input, phone type
  • 1 x 1/4" instrument output, phone type
  • Controls: VOL knob
  • SUSTAIN knob
  • ATTACK switch
  • Bypass/Engage footswitch
  • Impedance: Input: 450 kOhms
  • Output: 150 Ohms to 2.8 kOhms
  • Input Sensitivity: -10 to +2 dBu
  • Gain Reduction: 21 dB maximum
  • Bypass Switch: True bypass
  • Current Draw: 33 mA at 9.6 VDC
  • Power Source: 9 V battery (included)
  • Electro-Harmonix 9.6 VDC 200 mA power supply (available separately)
  • Dimensions (W x L x H): 2.8 x 4.5 x 2.1" / 7.0 x 11.4 x 5.3 cm

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