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Etymotic ER4-SR Studio Reference In-Ear Isolating Earphone with Replaceable Cable - Black

Marsoni M251S
Sale price$8870.71
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Get it in 3 business days with 1 day shipping. Friday, May 29
Etymotic ER4-SR Studio Reference In-Ear Isolating Earphone with Replaceable Cable - BlackBrand Etymotic Research Colour Black Ear placement In Ear Form factor In Ear Impedance 45 Ohm Noise control Sound Isolation Sensitivity 45 Ohm Headphone jack Detachable Connector Model name ER4SR Connectivity technology Wired About this item Enhanced accuracy with greater sound output and flat response ACCU Driver balanced armature, precision matched, custom tuned drivers Braid reinforced cable for enhanced durability and low microphonic effect ACCU
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
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4.5 ★★★★★
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Tom Crum
Pawtucket, US
★★★★★ 5
Auto air filters
Size: 16-22 Pilot, 14-16 MDX
Perfect - product great - installation easy and much cheaper than having dealer or auto shop do it ——
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 30, 2026
S
Verified Purchase
SheilGenX
Chelsea, US
★★★★★ 5
DIY auto repair.
For the DIY small auto repair repairs. I did it myself. Great value. Cleaned up the airflow.. the quality is there with this filter. Time to buy a new one.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 18, 2025
M
Verified Purchase
MAB
Birmingham, US
★★★★★ 5
Perfect fit
Hey - pay attention to the one you pull out. All the corners are different like a puzzle piece. It takes longer to open the intake than to place the filter.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 9, 2025
R
Verified Purchase
Rhonda D
Birmingham, US
★★★★★ 5
Ca10910 2017 Mitchu Outlander Sport
CA10910 Fits: Mitsubishi outlander sport 2017 Matches factory one/design etc- Only takes a few mins to swap out.The air box is frustrating to begin with, it has nothing to do with filter,don’t trim,tuck or cut. Adjust and line up the actual air box. (Not my first rodeo changing it) Idk about performance: I just changed it. Going to assume much better being my old one was overdue. Can’t beat the price/value. 5Stars bc it looks and feels identical to factory, (Will update if any issues;don’t expect any) 4/2026
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 11, 2026
R
Verified Purchase
Riley Bihlman
Chelsea, US
★★★★★ 5
Nothing
Very good
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 29, 2026

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