The addition of the BIAS knob and FULL/THIN/FAT switch make it incredibly versatile. The BIAS knob lets you dial in smooth sustaining fuzz, harsh velcro fuzz, or gated video game-like fuzz. The FULL/THIN/FAT switch lets you choose between the bottom heavy, booming sounds of a vintage 60's fuzz, a nice full fuzz with tighter lows, or a thin raspy fuzz of the late 70's. All jacks are located on the top. 9V battery or standard 9VDC negative tip power. True bypass. This is a very easy build and is highly recommended for begginers.
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