Check the listing for details. TC Electronic PolyTune 3 Mini Polyphonic Tuning Pedal. Condition: New. Listed at 53.90 USD. PolyTune 3 Power — All in a Mini Pedal Format The PolyTune 3 Mini manages to pack all the pedal-tuning and tone-preserving power of TC's full-sized PolyTune 3 into a miniature pedal format. The TC Electronic PolyTune 3 Mini is just as fast, dependable, and intuitive as ever, boasting accuracy within 0.02 cents and delivering a no-nonsense approach to guitar and instrument tuning. Strum all strings* to see which ones are out of tune at a glance, or tune up one string at a time. The PolyTune 3 Mini automatically switches between mono and poly modes based on the incoming signal. And thanks to its built-in, high-quality-analog BonaFide Buffer (switchable to true bypass), the PolyTune 3 Mini can even improve your tone over extended cable runs.