Boss - SD1B50A - Super Overdrive - Limited Edition 50th Anniversary
In celebration of our milestone 50th anniversary, BOSS has unveiled a trio of collectible, limited-edition versions of our most popular and influential compact pedals. The DS-1 Distortion (DS-1-B50A), SD-1 Super Overdrive (SD-1-B50A), and BD-2 Blues Driver (BD-2-B50A) offer a host of unique commemorative features and have been produced in strictly limited numbers, with just 7,000 units available worldwide.
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The Clipping Circuit That Defined “Overdrive”
In 1977, BOSS created an entirely new stompbox category with the OD-1, bringing natural overdrive in pedal form to guitarists for the very first time. Producing a signal rich in even-order harmonics, its unique asymmetric clipping circuit replicated the pleasing sound and feel of a driven tube amp—but at controllable volume levels. Four years later, this breakthrough design evolved into the more versatile SD-1, which added an active tone control for shaping the treble response and subtle enhancements for more low-end body.
- Genre-defining BOSS overdrive sound
- Unique asymmetrical clipping circuit produces tube-like overdrive characteristics
- Mild-to-moderate drive tones with focused midrange and tight low end
- Ideal for use with clean and slightly driven amps
| Nominal Input Level | -20 dBu |
| Input Impedance | 1 M ohm |
| Nominal Output Level | -20 dBu |
| Output Impedance | 1 k ohm |
| Recommended Load Impedance | 10 k ohms or greater |
| Bypass | Buffered bypass |
| Controls | DRIVE knob |
| TONE knob | |
| LEVEL knob | |
| Pedal switch | |
| Indicator | CHECK indicator (Used for indication of check battery) |
| Connectors | INPUT jack: 1/4-inch phone type |
| OUTPUT jack: 1/4-inch phone type | |
| DC IN jack | |
| Power Supply | Carbon-zinc battery (9 V, 6F22) or Alkaline battery (9 V, 6LR61) |
| AC adaptor (PSA series: sold separately) | |
| Current Draw | 10 mA |
| Expected battery life under continuous use | Carbon: Approx. 60 hours |
| Alkaline: Approx. 90 hours | |
| *These figures will vary depending on the actual conditions of use. | |
| Accessories | Owner's manual |
| Leaflet ("USING THE UNIT SAFELY," "IMPORTANT NOTES," and "Information") | |
| Carbon-zinc battery (9 V, 6F22) | |
| Options (sold separately) | AC adaptor: PSA series |
| Size and Weight | Width |
| 73 mm | |
| 2-7/8 inches | |
| Depth | 129 mm |
| 5-1/8 inches | |
| Height | 59 mm |
| 2-3/8 inches | |
| Weight (including battery) | 360 g |
| 13 oz |
Boss
AUTHORIZED DEALERAvailable in store & online — Nantel Musique
Boss is one of the most recognized names in musical instruments worldwide. Known for exceptional build quality, innovative design, and reliable performance across every price range, Boss instruments are trusted by beginners and touring professionals alike.
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