Pitch-black+ features a large 13-segment LED meter with tuning guides below the meter indicating if your instrument is sharp or flat. The smooth-moving LED"s provide highly-visible confirmation for accurate tuning at any viewing angle. The note name and tuning mode are shown by large, highly-readable green and red displays and the tuner on/off status is shown by a red LED, ensuring that you"ll see everything clearly - even on a dimly-lit stage. Pitch-black+ provides A and B input jacks for connecting two different guitars or basses, and individually specifying a separate calibration, tuning mode, flat tuning, and display mode for each.