EMMA Electronic RF-2 ReezaFRATzitz II Guitar Distortion Effect Pedal The ReezaFRATzitz 2 is a unique type of overdrive / distortion pedal that was designed to emulate as faithfully as possible the distortion characteristics of a real tube amp. Class A mode provides a smoother clipping ala' Vox AC30 while Class B is more akin to your classic Marshall Amp tones. Additional controls for Level, Gain, and the previously mentioned Low and High tone controls allow the user to fine tune the ReezaFRATzitz 2 to taste.