Etymotic ER4XR I Noise-isolating in-ear earphones

5.00 out of 5
(1 customer review)


World’s most accurate earphones.

Best Price, Australian Business, Service and Warranty!

EAN: 846430002029 Category: Tags: ,


ER4 MicroPro series noise-isolating earphones

Etymotic invented noise-isolating, in-ear earphones. The ER4 MicroPro series earphones were the first earphones commercialized using balanced armature  technology and are recognized as the world leader in response accuracy, to which all other earphones are compared. After more than 20 years, these reference-quality earphones are still the choice of serious sound engineers, audiophiles and musicians.

Backed by decades of research and development for the ear

World leader in sound reproduction

  • Unsurpassed frequency response accuracy and sound quality — 92%+ response accuracy from 20 Hz – 16 kHz
  • The only earphones with balanced-armature, precision-matched, custom-tuned drivers
  • Highest output sensitivity in its class

Features of the ER4-XR in-ear earphones

  • Professional quality and reliability
  • Precision-matched, custom-tuned drivers
  • Precision machined metal bodies with anodized finish
  • Detachable, reinforced 5 ft. cable with 3.5mm gold plated stereo plug and MMCX connectors
  • Assortment of noise-isolating eartip options to ensure proper seal and comfort

ER4 earphones have the highest noise isolation

  • First earphones to completely seal the ear
  • 98% (35 dB – 42 dB) noise isolation —highest of any earphones or headsets on the market today
  • Reduction of outside noise reduces the risk of listening at unsafe levels

Durable earphones with a replacement warranty

  • 2-year replacement warranty
  • User-replaceable filters protect the balanced-armature drivers from ear wax

What’s In the Box?

  • Earphones
  • Detachable, 5 ft. cord with 3.5mm gold plated stereo plug
  • ¼” stereo phone adaptor
  • Assortment of eartips
  • Filter removal tool and replacement filters
  • Shirt clip
  • Zippered storage case
  • Performance certificate


ER4XR is the earphone for music lovers and hi-fi enthusiasts who want uncompromising accuracy in the midrange and high frequencies, but appreciate a bit of extra presence in the lower end. Like the ER4SR, the ER4XR is built with precision machined, anodized and laser-etched aluminum bodies and features user-replaceable detachable cables. The ER4XR also incorporates the stringent channel-matching standard used in the ER4SR. The ER4XR is ideal for anyone looking for exceptional sound quality with just the right amount of low-end enhancement.

Accurate Earphone Reproduction

For earphones to have 100% accuracy, a recording of a live performance must produce exactly the same sound at the eardrum as the original performance. To achieve this, the acoustic properties of the ear must be factored in. The acoustic resonance and horn effects of the ear change a flat audio signal entering the open ear into sound with a (2700 Hz) high-frequency boost, which is the same response heard at the eardrum in a typical ear.

Technical Specs

Frequency Response20 Hz – 16 kHz
TransducersHigh performance, balanced armature micro-drivers
Noise Isolation35-42 dB
Impedance (@1kHz)4XR (45 Ohms) 4SR (45 Ohms)
Sensitivity (@1 kHz) SPL at 0.1v4XR (98 dB) 4SR (98 dB)
Maximum Output (SPL)122 dB
Cable5 ft Detachable
User Replaceable ACCU-FiltersYes
Warranty2 Years
Custom-Fit OptionYes

1 review for Etymotic ER4XR I Noise-isolating in-ear earphones

  1. 5 out of 5

    William Cowan

    I’ve been loving my ER4XRs with custom ear-molds for a year now. They are very comfortable and the closest I’ve ever experienced to plugging music straight into my brain. The quality of sound is pristine and is almost never compromised by external sounds. Long haul plane flights are a pleasure with quiet music playing in the background and no audible noise from the aircraft. Be mindful that these shouldn’t be used when awareness of your surroundings is required. With music playing you hear nothing of the outside world. These earphones are a little costly but are an enduring pleasure for the music lover on the go. HIGHLY RECOMMENDED.

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ER4XR - Earphones for Music lovers and hi-fi Enthusiasts
Etymotic ER4XR I Noise-isolating in-ear earphones