Korg PBXS Pitchblack XS Compact Pedal TunerThe Korg PBXS XS compact pedal tuner allows switching between true bypass and the newly developed ULTRA BUFFER. A new kind of pedal tuner, featuring an integrated display and footswitch. Features Unique design with a large display in a compact design Allows switching between true bypass and the newly developed ULTRA BUFFER Meter LED also offers bright mode settings for high visibility Ultra high tuning accuracy down to 0. 1 cents Four meter display