Marshall ED-1 The Compressor.
Boost new life into a guitar solo when needed.
 
A sometimes-overlooked effect. The compressor pedal helps to provide extra level and sustain when a normal guitar signal would begin to fade. Providing a reliable foundation to a rhythm part, or boosting new life into a guitar solo when needed. The ED-1 offers full tonal flexibility, allowing you to use compression in your FX arsenal with ease.