During his years with the Bluesbreakers, Eric Clapton had that sweet sounding combo made by Marshall which we all know from the recordings. Back in the '90s Marshall decided to recreate that sweet smooth overdrive sound in a stomp box and that is how the Blues Breaker MK1 was born. The Marshall Blues Breaker is an analog overdrive pedal which goes between boost to a light and organic overdrive which colours the guitar tone beautifully, so beautifully that some refer to it as one of the most important overdrive pedals of our times.