This is a clone board kit of the Ace Tone Fuzz Master FM-2, a famous Japanese upper-octave fuzz that was popular during the GS and New Rock eras, built into a painted black 1590BB size case. Since the board itself is a clone, the sound is comparable to the original, with two tone settings. This one uses five transistors, resulting in lower noise than the six-transistor FY-6 to Super Fuzz series, which have similar circuits. The distortion is slightly rougher, making the upper harmonics easier to hear. The front panel display is a printed paper with a film applied, cut and made into a sticker. The LED is blue, and there is a center-negative AC jack. The case, knobs/SW, and internal parts are all new, purchased from electronics stores and Amazon. It has been tested several times over a few days since its creation and is working properly. The board itself is a commercial product, so there shouldn't be any problems, but please understand that this is a handmade effect pedal and a self-made product for hobby purposes. Please consider this before purchasing. (A 9V battery will be removed before shipping, so please prepare one.) Fuzz Master effect pedal with tone selector, allowing switching between normal and fuzz. - Model Name: Fuzz Master - Tone Selector: Yes - Normal/Fuzz: Switchable - Connection Terminals: For guitar and amplifier Thank you for viewing.