The Boss SD-1 Super Overdrive is a true classic, first released in 1981 and loved for its smooth, amp-like drive and responsive feel. This particular vintage unit has been upgraded with a Monte Allum modification — a popular boutique mod that refines and expands the tonal range while preserving the SD-1's iconic voice.
Monte Allum’s mods are known for improving clarity, touch sensitivity, and low-end response. The result is a more open, dynamic overdrive with less harshness and more headroom. Ideal for boosting an already overdriven amp or as a primary gain stage, this SD-1 retains its original charm but offers a more refined and versatile tone.
Housed in Boss’s legendary rugged chassis, this vintage modded SD-1 is ready for stage or studio. Fully tested and in excellent working condition.
A classic overdrive pedal — hot-rodded for modern performance, but with vintage soul.
Please review the photos carefully to assess the signs of use and included accessories. All photos are of the actual products. No accessories are included unless photographed and/or named.
