D'Addario Chromatic Pedal Tuner +. The D'Addario Pedal Tuner+ takes the speed and accuracy of our original pedal tuner and boosts its performance with two new onboard features. First, it has a high-quality signal buffer to maintain your sound across long cable runs and prevent signal loss through your effect chain.
Next, it includes a programmable count-down timer to keep track of your set or session time. A multipurpose pedalboard tool, the Pedal Tuner+ keeps you and your playing in tune and on time.
D'Addario electronic tuners are designed by musicians for musicians featuring intuitive features, easy to read display's, and exceptional tuning accuracy. 32-bit processor for fast response and accurate tuning. Full-color vertical display / Power Requirements: 9V Battery or 9VDC (300mA) Power Supply. Reference Pitch: A4 = 440 Hz / Calibration Range: 415 - 475 Hz.