This is the classic Guv’nor, a high-gain distortion pedal. It has a vintage valve amp sounding, with a wide range of distortion and three knobs to control the tone. It is a perfect pedal for blues, rock or metal. Materials list 1x    GUVNOR DIY PCB 2x    10NF 0.01UF 100V 5% POLYESTER FILM BOX TYPE CAPACITOR 3x    100NF 0.1UF 100V 5% POLYESTER FILM BOX TYPE CAPACITOR 1x    100PF 50V CERAMIC DISC CAPACITOR 2x    220NF 0.22UF 100V 5% POLYESTER FILM BOX TYPE CAPACITOR 1x    220PF 50V CERAMIC DISC CAPACITOR 1x    4.7NF 0.0047UF 100V 5% POLYESTER FILM BOX TYPE CAPACITOR 1x    68NF 0.068UF 100V 5% POLYESTER FILM BOX TYPE CAPACITOR 1x    470PF 50V CERAMIC DISC CAPACITOR 1x    10UF 50V 105C RADIAL ELECTROLYTIC CAPACITOR 5X11MM      2x    1N914 SMALL SIGNAL DIODE 200MA 100V      1x    2.2M OHM 1/4W 1% METAL FILM RESISTOR 1x    1M OHM 1/4W 1% METAL FILM RESISTOR 1x    2.2K OHM 1/4W 1% METAL FILM RESISTOR 1x    10K OHM 1/4W 1% METAL FILM RESISTOR 2x    47K OHM 1/4W 1% METAL FILM RESISTOR 1x    680K OHM 1/4W 1% METAL FILM RESISTOR 1x    1K OHM 1/4W 1% METAL FILM RESISTOR 1x    1.5K OHM 1/4W 1% METAL FILM RESISTOR 2x    680 OHM 1/4W 1% METAL FILM RESISTOR 1x    100 OHM 1/4W 1% METAL FILM RESISTOR 1x    22K OHM 1/4W 1% METAL FILM RESISTOR      1x    TL072 LOW NOISE J-FET DUAL OP-AMP IC      1x    10K OHM LINEAR TAPER POTENTIOMETER 2x    100K OHM LINEAR TAPER POTENTIOMETER 2x    10K OHM LOGARITHMIC TAPER POTENTIOMETER