The Marshall Bluesbreaker II is just like two pedals in one. A hot boost to give your solos that extra lift, or a truly valve-like overdrive, so rich in 2nd order harmonics that it'll make you weep and wail. Having a completely passive bypass means that you don't lose a single drop of your real guitar tone too!

Mode switch to select Blues or Boost
Drive Control
Tone Control
Volume Control
Rugged well designed solid metal casing
Passive Bypass