Carl Martin Two Faze is a dual vintage phase shift foot pedal. Designed by Holm Malmquist to combine the old vintage style phase shifting, with the modern technology's advantages in improved quality in sound and headroom performance. It has two identical but independent sets of speed controls. Each "Phase shifter" has an LED indicator that lights up when in use and also flashes an indication of the speed setting. The Carl Martin Two Faze has a mono input/output via quarter inch jacks. The "on" switch allows you to engage or bypass the Two Faze. The "select switch allows you to switch between the two Phase settings mid song or mid set without having to get down on your knees to alter the controls. Specifications Power: 100 or 115 or 230 VAC 50-60Hz Power Consumption: 2.4 watts S/N Ratio: 70 dB Input Impedance: 1M ohm Output Impedance: 100 ohm THD Distortion: 0.1% Dimensions (D x W x H): 120 x 95 x 77 mm Weight: 0.625 kg