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Used Electro Harmonix Op-Amp Big Muff

Marsoni M251S
Sale price$69.99
Pay 4 payments of $17.50 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
Used Electro Harmonix Op-Amp Big MuffPre owned Electro Harmonix Op Amp Big Muff, in good condition. Has velcro attached, no box or power supply included. OP AMP BIG MUFF PI FUZZ DISTORTION SUSTAINER Faithful re creation of the original late 70s Op Amp Big Muff Pi!
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
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4.3 ★★★★★
Based on 1694 reviews
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Product Reviews
A
Verified Purchase
Amazon Customer
Houston, US
★★★★★ 4
Seems like an excellent purchase so far!
So far so good! And we really appreciated the little hair cutting tool for the roller—nice touch. We've replaced one bag, one brush head, and one filter using this bargain kit so far, nothing much to complain about. It's not quite OEM quality but it's very likely going to work well enough. We expect to go through one kit like this per year. Be aware that the rotating brush head replacement (the small round head ones, not the big rollers), have a little philips head screw that you have to remove. This was kind of hard to get off at first. We haven't used one of the replacement rollers yet, expect that we'll go through about two a year with our C10 at the current rate of wear.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 7, 2025
M
Verified Purchase
Marci H.
Los Angeles, US
★★★★★ 5
Great Price and Product
This accessory kit was a good price and great fit for my eufy vacuum. I will buy it again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 14, 2025
C
Verified Purchase
Cassie
Alexandria, US
★★★★★ 5
Nice extras
This kit is great to keep my vacuum running! It’s nice to replace the brushed when they get tangled with pet hair.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 9, 2026
J
Verified Purchase
J. Simpson
New York, US
★★★★★ 1
buy from Eufy only for reliable fit.
vacuum bag doesn't fit correctly and the vacuum doesn't register it and won't work with it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 12, 2026
S
Verified Purchase
Shirley Hall
Omaha, US
★★★★★ 5
Vacuum
Came as advertised
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 24, 2026

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