A compressor pedal is an electronic device used with electric guitars and basses to reduce the dynamic range of the signal, making the loudest parts quieter and the quietest parts louder. This can be useful for creating a more consistent sound, adding sustain, and reducing feedback. Compressor pedals are also often used to add warmth and thickness to a sound.
There are many different types of compressor pedals on the market, each with its unique sound and features. Some of the most popular types include FET compressors, optical compressors, and tube compressors. FET compressors are known for their fast attack times and aggressive sound, while optical compressors are known for their smooth, natural sound. Tube compressors are known for their warm, vintage sound.