Guitar echo effect pedal. Features: Responsive pedal faithfully reproduces every saturated nuance of a tape echo machine. 3-knob interface allows intuitive control of delay time, sustain and volume. Mod switch lets you convert your signal to warm tape echo sounds. True bypass for ultimate signal integrity.''Built-like-a-tank'' metal chassis. Runs on 9 V battery or PSU-SB DC power supply (not included). Connectivity: Input (6.3 mm jack), output (6.3 mm jack).