Electro-Harmonix Tube Zipper Envelope Filter

This is a Electro-Harmonix Tube Zipper Envelope Filter that uses 2) 12AX7 preamp tubes for the rive section and there is a envelope filter section with controls. This unit is in very good working condition and shows little to no signs of age or ware. This unit comes with the org. box and power supply. (See photos for they are part of the description) We will let this unit go for $275.00 plus shipping (US Only) or in store local pick up.