Budget Reproduction of A Very “Zen” Overdrive Known For Legendary Amplifier Tones. Premium components that match the original:2N7000 MOSFETS,a NE5532 Op-Amp and Schittky BAT41 diodes. True Bypass Volume,Tone,Gain,and Voice Controls Authentic Metal Enclosurewith Carefully Tapered Knobs 1/4'' Input(Inst) And (Amp) Jacks Powered By 9v DC Centre Nagative