“The guitar was well packed and is set up to my liking! I would definitely do business with this company again!”
MXR Classic Overdrive Effect Pedal - Used
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$49.99
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Pickup available at 2520 W Main St
Usually ready in 24 hours14-day returns
Changed your mind? Return it undamaged within 14 days.
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Ships from Rapid City, SD. Free on orders over $100.
11,000+ five-star reviews on Reverb
Trusted by players nationwide since 1963.
Ships same or next day
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This used MXR will ship insured and inspected from Rapid City, SD. This pedal is in excellent condition with velcro pre-attached to the bottom of the unit.
Buy risk free with our 14 day - full refund, less shipping, return policy. Check out our shop policies for more details.
When a guitarist needs to add grit, warmth, and extra push without burying the character of the guitar and amplifier underneath excessive gain, this used MXR M66S Classic Overdrive offers a straightforward approach to one of the pedalboard's most useful effects. Built around the familiar idea of using overdrive to recreate the response of a driven amplifier, the Classic Overdrive can serve as anything from a subtle boost to a source of creamy crunch and sustain. Its compact MXR format and simple three-knob layout keep the emphasis on quickly finding a usable sound rather than navigating unnecessary features.
Output, Tone, and Gain controls give the M66S enough range to fill several roles within a rig. Lower Gain settings can add light breakup or push an already driven amplifier harder, while increasing Gain produces a thicker, more harmonically saturated overdrive suitable for blues, classic rock, country, alternative, and straightforward rock rhythm and lead work. The Tone control provides additional control over the pedal's overall voicing, while Output makes it easy to balance levels or add extra signal to the front end of an amplifier. A rugged die-cast enclosure is designed for regular stage use, and the pedal can be powered from either a 9V battery or a compatible Dunlop AC adapter. Available now at Haggerty’s Music, this pedal ships in its original box.
Features / Specs
Highlights
- Effect Type: Overdrive
- Series: MXR Classic
- Model: M66S Classic Overdrive
- Sound Character: Warm, Tube-Like Overdrive and Crunch
- Condition: Used - Excellent
Controls
- Output: Adjusts Overall Effect Output Level
- Tone: Adjusts the Tonal Character of the Overdrive
- Gain: Controls the Amount of Overdrive and Saturation
- Footswitch: Toggles Effect On / Bypass
Signal / Electronics
- Circuit Type: Overdrive
- Audio Configuration: Mono
- Bypass: Footswitch-Selectable Effect / Bypass
Connectivity
- Input: 1/4" Instrument Input
- Output: 1/4" Instrument Output
- Power Input: External DC Power Jack
Power
- Battery Power: 9V Battery (Not Included)
- External Power: Compatible Dunlop AC Adapter (Not Included)
Construction
- Enclosure: Rugged Die-Cast Housing
- Control Layout: 3-Knob Output, Tone, and Gain
Miscellaneous
- Serial No: 1256366171
- Accessories: Original Box, Instruction Manual
used1256366171
MXR Classic Overdrive Effect Pedal - Used
$49.99
Customer reviews
11,000+ Five-Star Reviews On Reverb
What players say after the guitar arrives
“This is a beautiful guitar…appreciate the free setup and quick ship! Would purchase from this seller again…THANKS!”
“Thank you too for a wonderful experience and an amazing guitar. I appreciate the quick shipment and great customer service.”
“Very fast shipping, arrived in perfect condition, extremely well set up, no adjustments needed at all! Plays and looks great, exactly as advertised.”
“Fast shipping, and great communication from the seller. Pedal arrived quickly and was packaged really well. Would not hesitate to buy again.”
Very well packed! Would be happy to do business again! Thanks!
“Another masterpiece from Taylor. Great service and communication from Haggerty’s crew. Thanks!!!”
“Beautiful guitar, easy txn! Thank you so much! Looking forward to playing this guitar far into the future.”
“Fast shipping, great pedal. Buy with confidence these guys are great to work with!”
“Great shop! Awesome price, super fast shipping, and great packaging of an awesome new pedal! Thanks!”
Frequently Asked Questions
Do you set up every guitar before it ships?
Yes. Every guitar that leaves our store has been professionally inspected, set up, and signed off by the technician who worked on it. You will find a signed checklist inside the box when your order arrives.
How accurate are your condition descriptions?
We treat condition grading as a contractual promise, not an approximation. When we list something as excellent, that reflects a specific, consistent standard we apply across every instrument. We encourage you to call us before purchasing if you want a detailed in-hand description of any specific guitar.
Can I call and speak to someone about a guitar before I buy?
Yes, and we encourage it. Our team are working musicians, not order-takers. Call us at 605-348-6737 and ask about any instrument in our inventory. We will physically pull it off the wall and describe it to you in detail.
What is your return policy?
We offer a 14-day return policy if you change your mind and the item is returned undamaged. You are responsible for return shipping costs.
Do you offer financing?
Yes. Financing options are available at checkout. Monthly payment options are designed to make high-ticket purchases more accessible without requiring full payment upfront.
How do you ship instruments?
Every instrument ships fully insured from our store in Rapid City, South Dakota. We offer free shipping on all website orders over $100. Guitars are packaged to survive transit, properly cased, braced, and protected.
Are you an authorized dealer?
Yes. We are an authorized dealer for Taylor, Martin, Gibson, Fender, and many other brands. We are currently the number one independent Taylor Guitars dealer in the world, an award we have received two years running for 2024 and 2025. We are also a Top 10 premium dealer for Martin, Gibson, and Fender.
Do you sell on Reverb and Amazon as well as your own site?
Yes. We are one of the top 15 resellers globally on Reverb, where we have accumulated over 11,000 five-star reviews. We are also one of the only independent premium dealers in the world authorized to sell Taylor and Martin on Amazon.
How long have you been in business?
Haggerty's Music has been open since 1963. Our store is located at 515 Mount Rushmore Road, Rapid City, South Dakota.
Do you offer instrument repair?
Yes. Our certified technicians handle everything from routine setups to full restorations across fretted, orchestral, and band instruments. Our team holds certifications from Taylor Guitars, Yamaha, and other leading brands. Learn more HERE.
What brands do you carry?
Our core guitar brands include Taylor, Martin, Gibson, Fender, PRS, Epiphone, Suhr, Eastman, Gretsch, Luxxtone, Novo, Jackson, Charvel, Legator, and Yamaha among others. These are also the most searched brands on our site, so each has a dedicated collection page.
Do you offer music lessons?
Yes. We offer music lessons. You can find out more HERE.
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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