


Palmer RIVER Wupper Passive Line Isolation Box
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
Palmer RIVER Wupper Passive Line Isolation BoxThe more complex the setup, the higher the chance of ground loops. With the Palmer wupper Line Isolation Box, everything is quiet again so you can enjoy your audio without humming and buzzing. The Palmer wupper is an isolation transformer in a robust aluminium and steel housing. It separates the ground potentials of two devices so that equalising currents are prevented and only your sound is transmitted clean and without interference. The Palmer
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Your Palmer RIVER Wupper Passive Line Isolation Box orders ship within 1-2 business days.
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- Fast: 2-3 business days
- Express: 1-2 business days
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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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4.2 ★★★★★
Based on 550 reviews
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Product Reviews
★★★★★ 4
Good so far
Style: Set of 4
I just installed them a few days ago. So far they are working fine. I have a 2007 Honda Accord 2.4 and it seems the car is a little smoother when idling . I have driven it for about 100 miles and no issues so far.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 16, 2026
★★★★★ 5
Really good value
Style: Set of 4
Great quality , don't be afraid of these
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Reviewed in the United States on April 27, 2026
★★★★★ 5
08 CRV
Style: Set of 4
Great plugs.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 14, 2026
★★★★★ 5
Great for oil change for a Street Glide
Just what I needed to do the job.
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Reviewed in the United States on December 5, 2025
★★★★★ 5
5/5
Does as intended. Easy to use and easy to drain once oil is changed.
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Reviewed in the United States on November 16, 2025