The Cusack Tap-A-Delay is a unique delay pedal; it mixes its 750 ms delayed signal with the original analog signal for a gritty, warm sound. Don't expect a clean studio sound with perfect repetitions. The Modulation knob has eight modulation themes ranging from warm to out-there spacey themes. If you want a delay that sounds real and human, the Tap-A-Delay is perfect for you.