Here's a Keeley Compressor Plus pedal in excellent condition.
 
Keeley Compressor Plus Pedal Features:
Compressor pedal for electric guitar and bass
High-quality components used throughout
Preserves your guitar's natural tone
Adds clarity and balances out volume differences between strings
Attack switch for simplified setup
Blend knob for combining your dry signal with the compressed signal
Tone knob for optimizing your sound with any guitar or pickups
Metal film resistors and capacitors ensure ultra-clean operation
Hand-matched transistors to less than 1% tolerance
Specs:
Pedal Type: Compressor
Analog/Digital: Analog
Inputs: 1 x 1/4"
Outputs: 1 x 1/4"
True Bypass: Yes
Power Source: 9V DC power supply required (sold separately)
Batteries: Optional 9V battery
Power Usage: 5mA
Height: 2" (including knobs)
Width: 2.35"
Depth: 4.41"
Weight: 0.58 lbs.
 
Ships from Athens, Georgia.