Boss SD-1-4A 40 Year Anniversary Super-Drive Pedal
Frequently bought together
Limited Edition 40th Anniversary SD-1 Super Overdrive (SD-1-4A) To celebrate 40 years of continuous SD-1 production, we've created a limited edition version that's available throughout 2021. This commemorative pedal features a black body with yellow lettering, gold-capped knobs, and a vintage silver thumbscrew for the battery compartment and comes in a box with a special 40th Anniversary logo.
Since its release in 1981, the workhorse SD-1 Super Overdrive has been the core gain pedal for generations of players across every musical genre. Based around the revolutionary asymmetrical clipping circuit from the OD-1 Overdrive—one of the three original BOSS compact pedals from 1977—the SD-1 delivers rich, smooth, and highly musical overdrive tones that continue to inspire guitarists everywhere.
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.
Overdrive Perfection The SD-1 allows players from beginner to pro to get inspiring sounds right away, thanks to its natural behavior and the subtle mid boost that's part of its design. It gives your tone a push where it matters most, ensuring your guitar always sits perfectly in the mix with warmth, clarity, and rich presence. Lower drive settings are great for rhythm parts, while higher settings are ideal for fat, singing leads. The SD-1 is also very sensitive to input gain, letting you dial in different shades of overdrive simply by adjusting your guitar's volume control.
The One Pedal Every Player Needs With its organic character and responsive drive and tone controls, the SD-1 delivers the right sound for just about any style of music. Kick on the pedal with your favorite clean or slightly driven amp for mild-to-moderate overdrive that’s ideal for everything from classic rock and gritty blues to pop, country, jazz, and beyond. The SD-1 also shines as a booster for high-gain amps and other drive pedals, providing mid focus, tight bass, and smooth top end that's perfectly suited for heavier sounds and solo playing.
- 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
- Also works great for bringing tightness and definition to high-gain amp tones
- Stacks well with boost, overdrive, and distortion pedals
- BOSS five-year warranty
- Bypass: Buffered bypass
- Power Supply: Carbon-zinc battery (9 V, 6F22) or Alkaline battery (9 V, 6LR61), AC adaptor (PSA series: sold separately)
- Current Draw: 10 mA
- 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
Whats In The Box
- Owner's manual
- 9v Battery
- Model Name:
FREE Standard Delivery on orders over £99.00.
Orders placed before 4pm will normally be dispatched the same day.
Please refer to our delivery schedule for exceptions.
Delivery Upgrade Options (Over £99)
- DPD Express Next Working Day - £4.99
- Next Working Day Pre 12pm - £8.99
- Saturday / Sunday - £9.99
At Music Matter, our goal is to ensure complete satisfaction with your purchase.
If, for whatever reason, you are dissatisfied with your purchase, you can return it to Music Matter within 30 days of receiving the item, providing it arrives back in new condition.
You have the option of receiving a full refund / exchange within 14 days, or, exchange / credit only within 30 days.
Full Refund Within 14 days
In order to receive a full refund, you must notify us within 14 days of receiving the goods. Once you have notified us you will have 14 days to return the product to us.
Exchange Within 30 days
In order to exchange an item, you must notify us within 30 days of receiving the goods. Once you have notified us you will have days to return the product to us.
Goods received back 14 days after the cooling of period ends may be rejected.
Your returns period starts the day after you receive the item(s)
Click here to view our full Returns Policy.
Secure Online Payment Powered By Braintree
We accept the following debit / credit cards:
Pay for your item(s) in just a few clicks with PayPal.
Finance provided By etika
We have partnered with etika so you can spread the cost of your purchase. Simply add the items you love to your basket. Once you are at the checkout choose "Apply for Finance" as your payment option.
Who can apply for finance?
- You must be over 18 years of age.
- You must be employed at least 16 hours per week, self-employed, retired in receipt of a pension or receiving disability payments.
- You must be a permanent UK resident with at least 3 years UK address history.
- You must have a good credit history with no late payments, debt relief orders, CCJs, IVAs or bankruptcies.
- You must have an active valid email address.
Pay Later with PayPal Pay in 3
Split purchases into three interest-free monthly payments at millions of stores online.
Subject to status. UK residents only. Late fees apply. PayPal is a responsible lender. Pay in 3 performance may influence your credit score. T&Cs apply.
Check out securely with PayPal and choose Pay in 3 from your account.
Subject to status. Terms and Conditions apply. UK residents only. PayPal is a responsible lender. Pay in 3 performance may influence your credit score. PayPal Pay in 3 is a trading name of PayPal (Europe) S.à.r.l. et Cie, S.C.A., 22-24 Boulevard Royal, L-2449, Luxembourg.
Click here to learn more about Pay in 3.
Minimum 12 Months Warranty
All new & used goods supplied by Music Matter are warranted free from defects for 12 months from the date of supply (unless otherwise stated).
Many manufacturers offer a free extended warranty upon registration.