The Friedman Fuzz Fiend features a high-voltage (220 volt) 12AX7A preamplifier for a more natural, intense sound. In conjunction with the RAGE switch, the Fuzz Fiend can create anything from light fuzz to deep, intense fuzz. While the RAGE switch is engaged, the Fuzz Fiend's circuitry becomes unstable, producing sustained sustain and buzzing. Turning down the guitar volume increases the sustain. The Bass, Mid, and Treble controls allow for further adjustment of the Fuzz Fiend's tone. Because tubes require more current than transistors, a power supply capable of delivering at least 350-400mA is required. Features: ・12AX7 Tube Fuzz Pedal ・Fuzz, Bass Middle, Treble and Volume Controls ・Rage Momentary Switch ・True Bypass ・Voltage Requirements: 9-12vDC - Minimum of 350-400mA of current ・Built in USA Dimensions: 4.5 x 5.5 x 3 Weight: 1 lbs. ■ Names and functions of each part FOOTSWITCH This is a switch that turns the pedal on/off (true bypass). RAGE FOOTSWITCH: While the RAGE switch is pressed, the Fuzz Fiend's circuitry becomes unstable, resulting in continuous sustain and noise, and the sustain extends when you turn down the guitar volume. VOLUME Adjusts the volume. FUZZ Adjusts the amount of fuzz. BASS Adjusts the bass range. MIDDLE Adjusts the mid-range. TREBLE Adjusts the high frequency range. IN (in) Input terminal. OUT (Out) Output terminal power supply: DC 9V-12V power adapter only (400mA or more, center negative) Size: 11.4 (W) x 14.7 (D) x 7.2 (H) cm *Including knob height. Weight: 508g Accessories: Warranty card, manual (English version)