Compression pedals are probably the most misunderstood of all guitar pedals. When used properly, it shouldn't even be noticed as an effect. A Compressor is best thought of as a smoothing and thickening agent for your tone and dynamics. Much like a noise gate, it is a signal attenuating effect. However, whereas the noise gate cuts signal below a certain threshold, the Compressor impacts signal above a threshold. The Compressor aims to keep your dynamics (post-threshold) within a certain range. Signal louder than the threshold will be lowered, and signals below it will be untouched. This effect not only evens your dynamics, it also helps improve sustain and tone body. Our SCP Compressor uses Optical Compression Technology. Optical Compression uses a light source and optical resistor to adjust your signal volume. Optical Compression is known for its smooth qualities and transparent, natural attack.