The Keeley Rotten Apple is an OpAmp based Big Muff fuzz circuit, it was designed to capture the tone of Billy Corgan’s massive fuzzed out guitars. It has a ton of gain on tap and the filter can go from bassy and wooly to bright and screaming.


The Keeley Rotten Apple is an OpAmp based Big Muff fuzz circuit, it was designed to capture the tone of Billy Corgan’s massive fuzzed out guitars. It has a ton of gain on tap and the filter can go from bassy and wooly to bright and screaming.
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