MXR M-102 Dyna Comp Compressor
The MXR M-102 Dyna Ccomp has been around for a long time and is still oner of the most popular guitar or bass compressors on the market. (It was also one of the first).
The M-102 Dyna Comp creates clean sustain. It uses a signal-limiting processor that varies its gain so that the output signal stays constant. The MXR Dyna Comp features Output and Sensitivity knobs and an LED on/off indicator.