The third collaboration pedal between Matchless founder Mark Sampson and Rockett Pedals. This is a clean booster & enhancer. While all types of clean boosters are available, the main feature of this unit is its unique texture that makes the sound crisp and present without being harsh, simply by passing the signal through it. This exquisite sound tuning is unique to Mark Sampson, who knows the ultimate vacuum tube sound, as represented by the Matchless DC-30. The "CHIME" knob controls this beautiful, bell-like nuance. For clean boosting, it produces a sound worthy of being called a "beltone," a beautiful sound that can only be produced by a Class A vacuum tube amplifier. The presence it provides is never harsh, even with a single-coil rear pickup, and naturally brings out the sound. As befits an enhancer, the sound naturally cuts through. For boosting into overdrive, it not only provides definition and clarity, but also the nuance when the guitar's volume is rolled back is superb. The distortion gain is properly controlled, and the sound never gets muddy! When controlling the drive with the guitar's volume knob, you often encounter the problem of the gain decreasing, but the sound becoming muddy and the tone dull. With this unit, even when you roll back the volume, it provides a natural shimmer, further bringing out the potential of the overdrive you combine it with. - Model Name: MAX - Functions: Boost, Chime - Input/Output Terminals: IN, OUT - Bottom: Black - Knob Color: Silver Thank you for viewing.