Used pedal in good condition! Shows its age with some paint wear across the chassis from years of use, but no effect on its vintage sound. Includes original packaging! Collar City Guitars is a Preferred Reverb Seller, buy with confidence! --------------------------------------------------------------------------------- The MXR Envelope Filter is a tone modifier which enables a musician to duplicate effects previously found only on synthesizers. In performance, the Envelope Filter may be used to create a wide variety of "wah wah" sounds which respond directly to touch. Specs: Maximum Input Level: 0 dBV Maximum Output Level: 0 dBV Input Impedance: 150K ohms Output Impedance: 5K ohms Equivalent Input Noise: -95 dBV Filter Frequency Range: 150 Hz to 3 KHz Power Requirements: 9 volt battery, 1.3 ma