In the quest for ultimate tone, a compressor is an indispensable ally. And the MXR Dyna Comp that was produced in 1976 has long been regarded as one of the ultimate stomp box compressors ever made. There’s something inherently musical in the way this compressor pedal “tightens up” a guitar signal, raising the volume of quiet notes and leveling off peaks to create rich, full bodied sustain. From country twangers to metal monsters, guitarists have long relied on the MXR Dyna Comp pedal to make their riffs stand tall in any live or studio mix. EC.