Amptweaker’s TightFuzz Pro has switches for Germanium/Silicon, Smooth Edge, and ’60s/’70s tone. It also has a three-band EQ and a Tight control that tames its attack. An auto-bias feature helps the knob adjust degree of distortion, and the dual-knob Boost system allows boosting its the Fuzz, while also boosting or cutting Volume. Its selectable Octave-Up effect can be blended into the boosted tone. It has a universal effects loop, SideTrak loop, adjustable noise gate, a hidden More Fuzz switch for vintage pickups, LED illumination of controls, 14-gauge steel housing, and true-bypass switching.