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Etymotic ER4SR IEM

Etymotic ER4SR IEM

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Frequently bought together:
Massdrop x Sennheiser HD 6XX Headphones
Alpha & Delta MK 2 USB-C and Lightning Adapters
Product Description
A classic IEM that’s been refined over decades, the Etymotic ER4 gets its latest update in the ER4SR: a model that delivers accurate, reference-quality sound with excellent noise isolation—up to 42 dB of reduction, to be exact. The ER4SR features precision-matched and custom-tuned balanced armature drivers inside sleek anodized aluminum housings, along with a detachable 5-foot-long cable that ends in a 3.5-millimeter gold-plated stereo plug Read More


  • Etymotic
  • Transducers: Balanced armature micro drivers
  • Frequency response: 20 Hz–16 kHz
  • Noise isolation: 35–42 dB
  • Impedance at 1 kHz: 45 ohms
  • Sensitivity at 1 kHz, SPL at 0.1v: 98 dB
  • Maximum output (SPL): 122 dB
  • Cable: 5 ft (1.5 m), detachable
  • User-replaceable ACCU filters


  • Manufacturer's 2-year warranty
  • Detachable cable with 3.5mm gold-plated stereo plug
  • ¼” stereo phone adapter
  • Assortment of ear tips
  • Filter removal tool and replacement filters
  • Shirt clip
  • Zippered storage case


Estimated ship date is Oct 13, 2023 PT.

Payment will be collected at checkout. Cancellations are accepted up to 2 hours after checkout, after which all sales final.

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