MI Effects Super Crunch Box Distortion The MI Effects Crunch Box has become a modern-day classic that has garnered a loyal army of fans. We have re-designed the original and added new features to take this British stack-in-a-box to the next level! External PRESENCE control, COMP switch and LO/HI gain modes now makes the Super Crunch Box the authority on British amp distortion for any era! Switch on over to HI mode, COMP on 1 or 2, and you have that classic, 80s hot-rodded Marshall tone the Crunch Box has become synonymous with. This is perfect for those stadium rock riffs, shredding lead tone with pinch harmonics for days!