Used Boss SD-1-4A Guitar Effect

Used Boss SD-1-4A Super OverDrive Pedal (40th Anniversary Edition)

Overview:

This special limited-edition version of the Boss SD-1 celebrates 40 years of the Super OverDrive in a sleek black body with anniversary gold-capped knobs and vintage styling. The SD-1 circuit itself is legendary—offering smooth, tube-like overdrive, a responsive drive knob, tone shaping, and enough presence for rhythm or lead work. Whether you’re stacking it for heavier gain or dialing it back as a mild boost, the SD-1-4A delivers proven performance.

Features:

• Classic SD-1 overdrive circuit—warm, aggressive yet musical overdrive
• Drive, Tone, and Level controls for full performance flexibility
• Buffered bypass circuit for stable signal integrity
• 9V power supply compatible (battery or PSA series adapter)
• Limited edition 40th Anniversary edition with special packaging and cosmetic detail
• Ideal for guitar players across genres: rock, blues, country, metal, jam bands

Condition:

Used and in very good condition. Fully functional—switch, knobs, input/output jacks and circuit all test smoothly. The body has light cosmetic wear from gig and pedalboard use, but nothing that affects performance. All major features and the original limited-edition cosmetic styling are intact.

Item Condition & Testing

All used gear is fully tested when it arrives and again before shipping, so you can buy with confidence. Any included accessories are shown in the photos, and any functional issues are always noted. Expect normal cosmetic wear that may not show clearly in pictures. Since items are also available in-store, light demo wear may be present.

Shipping

We ship to the contiguous 48 states using flat-rate pricing that includes insurance. If shipping looks high, send us your ZIP for a more accurate quote. Orders outside the lower 48 may require additional costs—please reach out before purchasing. Larger or fragile items (amps, cabs, drum kits, etc.) may be local pickup only; contact us if you’re unsure.

Returns

Returns are accepted within 48 hours of delivery. The buyer covers return shipping, and a 20% restocking fee applies. If you have any questions before buying, feel free to message us—we’re happy to help.

Order Issues

If your order isn’t processing, double-check that your billing and shipping addresses match. For any other issues, just reach out and we’ll get it sorted quickly.