A Compression Pedal is closely related to a volume pedal. It tends to smooth out the signal going to an amplifier. A compressor effect pedal lessens the output signal when an input signal gets in the red or a little to loud. Especially helpful when recording guitar solos and a notes signal tends to get our of a normal range.
Typically, some sustainer functions are built into compressor pedals. A Sustainer Pedal holds a note of music for a longer time. It lengthens or extends a note. To Use a Sustainer Pedal you would hold and depress the pedal when you want to hold or extend a note on the guitar.
|MXR Dyna Comp Effects Pedal||Jim Dunlop CSP202 Mxr Custom Comp||Boss CS-3 Compression Sustainer|
|BBE Opto Stomp Optical Compressor||Electro-Harmonix Soul Preacher Compressor/Sustainer Pedal||Digitech XMS Main Squeeze Compressor/Sustainer Guitar Pedal|
|Pigtronix Philospher's Tone Compressor||ToadWorks Mr. Squishy Compressor||Behringer CL9 Classic Compressor/Limiter|
|MXR M87 Bass Compressor||Barber Electronics Tone Press||im Dunlop CSP028 Dun '76 Vint Dyna|