The EWS Fuzzy Drive is a groundbreaking fuzz/distortion effect pedal. It is a killer new take on fuzz that does not rely on old school "hit or miss" NOS transistors. As you crank up the gain control of the FUZZY DRIVE, you will have powerful fuzz/distortion and with the versatile tone control, you will have wide variety of sound at your fingertip. And when you lower the gain and crank up the volume, it can also be used as fuzz/booster "a la vintage Tone Bender" to enhance your amp distortion. As always, switches are true bypass freeing you of any worries of your tone thinning out when the pedal is not engaged. Past Fuzz units drawback was the considerable individual variability in sound. This was caused by the flucuation of quality in the "heart" of the unit, the transistor. EWS Fuzzy Drive is designed with circuit using the more stable Operational Amplifier. When evaluating the vintage fuzz sound, many people seek the value in the usage of vintage parts like Germanium transistor, but Fuzzy Drives unique design allows you to enjoy the typical tone nuance of the vintage Fuzz even with the use of Operational Transistor. Fuzzy Drive is designed so you can dial in fuzz, overdrive and all the sound in between simply by adjusting the Gain knob. had this to say about the pedal: "The "Fuzzy Drive" is actually properly named. I have owned old Tonebenders"...the "holy grail" of fuzz pedals..I have to say the "Fuzzy Drive" is one of the closest sounding to those that I have heard in a long time. But its more controllable. So you can get that classic old "fuzz" tone, and at the same time its warmed up by the "overdrive" nuance. Its a great, usable, fun pedal. Very "musical"."