Pitchblack Poly, a polyphonic tuner that can tune all strings at once. ■ Displays the tuning status of all six strings. ■ Seamlessly switches to the conventional single-note mode when a single note is played. ■ Compatible with Drop D tuning and guitars with a capo. ■ Mutes during tuning. ■ High-brightness LED display. ■ True bypass. This is my first polyphonic tuner, and I think it's a multi-functional, high-performance model, but I wasn't used to it, so I'm selling it. There are some minor scratches and scuffs, but I think it's in good condition for a used item.