MXR MX-120 Envelope Filter Vintage Original Box Guitar Pedal (Ramon Stagnaro)

A very rare piece to find. This is a 1976 MXR Envelope Filter in Mint condition. Includes original box and documentation.  Sounds just like you would imagine from the 70s and has that quack tone made famous by Jerry Garcia of the Grateful Dead.  This was part of legendary guitarist Ramon Stagnaro  guitar pedal collection who passed away earlier this year.