D'Addario PW-CT-23 Chromatic Pedal Tuner PlusD'Addario PW CT 23 Chromatic Pedal Tuner Plus CHROMATIC PEDAL TUNER PLUS Signal Buffer, Set Timer PW CT 23 The DAddario Pedal Tuner Plus boasts the speed and accuracy of our original Pedal Tuner, plus two new features. First, it has a high quality signal buffer, to maintain your sound across long cable runs and prevent signal loss through your effects chain. Second, it includes a programmable countdown timer to keep track of your set or session time.