The new HD-200 Harmony Director is a revolutionary tuning device for teaching intonation by comparative learning. Unlike traditional tuners that correct one pitch at a time, the HD-200 teaches students to tune the notes within actual chords, helping improve intonation, harmony and overall sound. It features three preset temperaments with 10 instrument voices including paino for accompaniment. New Figure Sliders control note attack, brilliance and release. The built-in metronome is programmable and a tap-tempo feature lets you set tempos.