The Keeley Compressor Pro Guitar Effects Pedal is a compressor guitar effects pedal, featuring true bypass, with exact RMS analysis, a hard/soft knee compression, and auto-mode. The stomp-box sized compressor/limiter is made in Oklahoma, USA and engineered to be an indispensable tool for your musical endeavors. It is in no way limited to be used only with a guitar.

It has been designed to work as a studio compressor accepting any range of inputs and a frequency response and noise level matching the finest compressors made. The Compressor Pro features a seven-segment LED display for fast and accurate metering of compression and gain reduction. Gain Reduction Levels of -1dB to -20dB are indicated. A bi-colour threshold LED indicator indicates when compression is initiated and released.

Exact RMS Analysis (ERA) senses the true RMS value of the input program material such as your guitar, bass or drum machine. Hard Compression is for limiting or adding sustain, while soft knee or Komfort Kompression is for gentle compression, keeping performances lively and natural sounding without potential phase issues in parallel, or blending style compression.

The main features of the Keeley Compressor Pro Guitar Effects Pedal include:

• Compression LED Display
• Threshold LED Indicator
• Exact RMS Analysis
• Hard/Soft Knee Compression
• Auto Mode: Program dependent Attack and Release times
• True-Bypass