★★★★★ 5
Nice filter
Nice filter for acura rdx. Easy to install. Well priced.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 12, 2026
SeM20 Filter Single Channel
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
SeM20 Filter Single ChannelThe SeM20 is a 2 pole state variable filter loosely based on the Oberheim SEM's filter with the resonance section of the MS20 grafted on for extra bit of grit. It won't self oscillate, usually, but with an input, or the High Pass out plugged into the Input, it will howl. The Input section is set up much like the input of the OSCar, when the input is at 5 it's full volume. Beyond 5 the filter will begin to overdrive and distort.
Quick Dispatch:
Your SeM20 Filter Single Channel orders ship within 1-2 business days.
Delivery Options:
- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
Order Tracking:
You'll receive a tracking link by email once your SeM20 Filter Single Channel ships.
Need Help?
Questions about SeM20 Filter Single Channel, sizing, or delivery? We're just an email away.
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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.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
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4.1 ★★★★★
Based on 1045 reviews
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Product Reviews
★★★★★ 5
Perfect fit
Fit my car perfectly and good quality filter.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 1, 2026
★★★★★ 5
Satisfied with my purchase!
Well made, fit perfect and decent price.
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Reviewed in the United States on September 1, 2025
★★★★★ 4
New
Looks great no issues with the product am happy with it
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Reviewed in the United States on August 3, 2025
★★★★★ 5
Convenient and economical
I can't believe that I've paid $60+ for years to have my filter replaced. The money that I've spent is mind blowing.
The replacement actually takes 2 minutes! Quality is amazing and it lasts just as long (maybe longer) the dealer's and repair shops version.
Helpful tip: Do it yourself for far less.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 17, 2024
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