Vintage 1977 MXR Envelope Filter MX-120 – Original Box, Manual & Sticker

Original 1977 MXR Envelope Filter MX-120 from the classic MXR era. This is an unusually complete vintage example and comes with the period original MXR box, original operation manual, large MXR sticker, and the interior packaging/foam.

The pedal is in very good vintage condition. It shows normal finish wear, small marks, and other cosmetic signs expected from a pedal of this age. Please refer to the photos for a detailed look at its condition.

I have also included photographs of the electronics. The interior appears remarkably original and unmolested, and the original factory inspection sticker is still present inside the enclosure. I see no apparent modifications or replaced components, although I cannot independently guarantee every individual component in a nearly 50-year-old pedal.

Serial numbers are:

Pedal: 20-012745
Box: 20-012746

For complete transparency, the pedal and box have consecutive serial numbers, but they are not matching numbers.

The pedal has been tested and is fully functional. Both the Threshold and Attack controls operate properly.

Included with the sale:

• Vintage MXR Envelope Filter
• Period MXR serialized box
• Original operation manual
• Original large MXR sticker
• Interior packaging/foam as pictured

This is a great example of an original 1970s MXR Envelope Filter and an especially nice package for a vintage MXR collector.

Sold exactly as pictured and will be packed very carefully for shipping.