The Echo Fix EF-P2 is a real Spring Reverb pedal that packs a huge sound into a small enclosure. The EF-P2 features a three-spring reverb tank, adjustable Spring Drive, Bass / Treble EQ controls, and Reverb Volume control. With a footswitch for reverb bypass and also a direct signal mute footswitch, the EF-P2 can also be used as an outboard effect in recording studios. The EF-P2 can accept audio signal from synths and other audio devices, not just guitar. Real spring reverb Pan 100% Analog Signal Path Controls: Spring Drive, Bass, Treble, Reverb Volume Soft momentary switching for noiseless Bypass and Direct Mute switching Increased internal power supply voltage rails for increased dynamic range Illuminated reverb tank viewing window Power - 9VDC Centre NegativeCurrent - 200mA minimumInput Impedance - 1MΩOutput Impedance - 1KΩDimensions - 160mm x 130mm x 60mm (6.29" x 5.11" x 2.36") EF-P2 Owner's Manual Call or Message for more details on this fine pedal.