HU-8500 Stage Tuner

The Arion HU-8500 Stage Tuner holds an important place in effects history as the first commercially available chromatic tuner in a compact stompbox format. Before this, guitarists relied on bulky rack units or handheld tuners that couldn't be integrated into a pedalboard.

Featuring a 9-LED sharp/flat indicator with a center green LED for precise tuning, the HU-8500 offers accuracy within ±1 cent. The pitch calibration knob allows adjustment from 440-445Hz to match different reference pitches.

True bypass with mute function enables silent tuning during performances. This pioneering pedal established the stompbox tuner category that Boss, Korg, and countless others would later dominate.