









KEP Origin Overdrive Pedal – SD-1 Style Overdrive
The KEP Origin Overdrive Pedal is a handmade overdrive pedal modeled after the Boss SD-1 circuit, hand-soldered and hand-wired in a durable 1590B enclosure (4.425″ L x 2.382″ W). Input/output buffers removed, asymmetrical 1N4001 clipping in place of the stock symmetrical pair, a modified C6 capacitor value for added treble clarity that opens up the pedal’s overall tone, premium OPA2134 op-amp for lower noise floor. 3PDT switch, Neutrik jacks, true bypass. Built for reliable daily use.
Once assembled, each pedal is played through a looper pedal for several hours before it ships to confirm reliable, consistent performance. Not affiliated with, sponsored by, or endorsed by Boss Corporation.
$74.95
In stock
The Boss SD-1 Story:
Boss released the SD-1 Super Overdrive in 1981 as a refinement of the original OD-1, adding a tone control to compete with the newly released Ibanez TS-808.[1] It’s been used by Eddie Van Halen, Prince, Steve Vai, Jimmy Page, John Frusciante, The Edge, Johnny Greenwood, and Josh Homme.[1][2] It’s especially associated with Zakk Wylde, who runs one into a cranked JCM800; his own MXR signature overdrive pedal shares nearly the same circuit as the SD-1.[2][3]
Sources:
- Boss Articles — “40 Years of the BOSS SD-1 Super Overdrive” — https://articles.boss.info/40-years-of-the-boss-sd-1-super-overdrive/
- Guitar World — “Decoding the magic of the Boss SD-1 Super Overdrive” — https://www.guitarworld.com/features/boss-sd-1-super-overdrive-pedal
- Barbarach BC — “Modding MXR Zakk Wylde Overdrive” — https://barbarach.com/modding-mxr-zakk-wylde-overdrive/
