SKU: 56378156226

Etymotic ER4SR Studio Reference Earphones

Sale price$181.35 Regular price$201.50
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Ships within 48 hours · Estimated delivery Aug 14 - Aug 19

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Description

Etymotic ER4SR Studio Reference EarphonesER4SR Studio Reference The World's Most Accurate Earphones Just Got Better! Over 30 years ago, Etymotic invented noise isolating, in ear earphones. Etymotic's original design, developed for auditory research and hearing testing, used balanced armature receivers and established these speakers as the gold standard for high definition, in ear earphones. Detachable 5 foot cable High performance balanced armature drivers Sleek driver bodies with anodized

ER4SR Studio Reference

The World's Most Accurate Earphones Just Got Better!

Over 30 years ago, Etymotic invented noise-isolating, in-ear earphones. Etymotic's original design, developed for auditory research and hearing testing, used balanced-armature receivers and established these speakers as the gold standard for high-definition, in-ear earphones.

  • Detachable 5 foot cable
  • High performance balanced-armature drivers
  • Sleek driver bodies with anodized finish
  • Braided cables for reduced microphonic effect

Why Etymotic?

Etymotic designs products to measure, improve and protect hearing, and enhance the listening experience of music lovers everywhere. Audio engineers, musicians and audiologists at Etymotic have generated over 100 patents issued and pending.

Why ER4SR Studio Reference?

ER4SR is Etymotic's new reference standard hi-fidelity earphone for those who demand nothing less than the highest fidelity. The next generation of our long-revered flagship earphone, the ER4S, the ER4SR delivers increased accuracy with greater sensitivity.

Like its predecessor, the ER4SR channels are precision matched within an industry-leading 1dB across frequencies from 100Hz to 10kHz.

The new ER4SR incorporates significant cosmetic and functional improvements, from a sleek, anodized and laser-etched aluminum body to the reinforced, user-replaceable detachable cable. The ER4SR is a must have for discerning engineers, audiophiles, and consumers wanting the most accurate in-ear earphone available.

User Detachable Cables

To detach the cables, pull the cable connector away from the earphone body. Pull straight out-DO NOT TWIST.

To attach the cables, align the key tab on the cable connector with the notch in the body of the earphone. Press together until it snaps in place.

Changing the Filters

Etymotic earphones have special filters that smooth the frequency response and prevent earwax from entering the earphones. The filters are located at the end of the earphone and are visible when the eartip is removed. When a filter becomes clogged it should be replaced. Filters should be changed when output decreases or sound quality declines.

In The Box

ER4SR Studio Reference earphones

Assorted eartips and 1/4" stereo phone adapter

Filter removal tool and replacement filters

Shirt Clip and Carrying Case

Performance Certificate

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
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
SKU: 56378156226

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Lisaura
Birmingham, US
★★★★★ 1
Low quality
Size: 8.5 Wide, Color: Cognac, Size: 8.5 Wide, Color: Cognac
Starting to peel after a few uses
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Reviewed in the United States on June 3, 2026
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Amazon Customer
Cuba, US
★★★★★ 5
Great Shoes
Size: 10, Color: Cognac
Love these shoes super comfortable and look great. Everyone asks me where I got them.
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Reviewed in the United States on May 20, 2026
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Amazon Customer
Draper, US
★★★★★ 5
Beautiful shoe but too narrow
Size: 10 Wide, Color: Navy Grainy Leather
Too narrow
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Reviewed in the United States on May 24, 2026
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Tim Arnette
Whiting, US
★★★★★ 5
Looks good feels good
Size: 13 Wide, Color: Black
I've had them 2 weeks and love them. Took a little breaking in but they feel great now.
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Reviewed in the United States on April 8, 2026
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Elizabeth Henderson
Houston, US
★★★★★ 4
Very narrow
Size: 10 Wide, Color: Cognac
Run narrow. For very narrow feet. Wide width fits like a regular width.
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Reviewed in the United States on February 9, 2026

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