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Keeley Manis Overdrive: The Klon Centaur Circuit Evolves
Keeley Manis Overdrive. This innovative pedal uses NOS germanium transistors and features a bass boost, 18V headroom, and flexible switching.
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Robert Keeley started the company from his home in Oklahoma City in 2001, fresh out of an electrical engineering degree at the University of Oklahoma. He'd hoped to build amplifiers, found that market too crowded, and modified an old Ross compressor instead — while teaching at a technical college and hiring some of his own best students to help build them. Everything Keeley makes, from the circuit boards to the enclosures, is still assembled in Oklahoma rather than outsourced overseas, which is unusual for a pedal company at this scale. Multi-effect boxes and overdrive/compressor mods built on classic circuits are the backbone of what we cover. Here's what we've written.

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