Refractor
DIY PCB for building a Klon Centaur clone - the transparent overdrive that became the boutique benchmark.
Aion FX from Des Moines, IA has helped guitarists build studio-quality effects since 2011. Their Klon PCB makes the most copied boutique circuit accessible without the mystique and hype.
The Refractor recreates the Klon Centaur/KTR, the boutique overdrive that became a benchmark circuit. The Centaur's unique topology uses a JFET input buffer, germanium diode soft-clipping, and a clean blend circuit - all working together to create transparent gain that enhances rather than colors your tone.
Originally selling for under $300, Centaurs now command $2000+. The circuit's "transparent" character means it adds gain while preserving your amp's voice rather than imposing its own signature. Jeff Beck, John Mayer, and countless studio players made it the most cloned boutique pedal ever. The Aion version demystifies the circuit with clear documentation.
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