Do you want to add spice to a riff? Digitech"s Synth Wah is the "go to" pedal, it goes beyond the standard one sound pedals available in the market, The Synth Wah delivers 7 different synth effects to choose from including funky envelope filters, synth tones, and filter sweep effects! The Synth Wah delivers some of the most unique envelope filter effects. The studio-quality effects range from classic Funky Envelope filter sounds, to a Deep Sweep, or even a cool Vowel sound and vocal format, to cutting edge Slow Synth tones and filter sweeps. When you demo it, you"ll see that the Synth Wah stands out in its class.To select different envelope filter effects on the Synth Wah, simply rotate the Type knob. You can select Envelope Up, Envelope Down, Synth 1, Synth 2, Filter 1, Filter 2, and Auto Wah effects. Power Supply: 9V Alkaline Dry Battery Power Consumption: 4.8Watts (w/optional PS200R power supply) Battery Life: Approximately 4 hours (with continuous usage) Dimensions: 4 15/16"(L) x 3 1/8"(W) x 2 1/8"(H) Unit Weight: 1.38 lbs.