Etymotic ER4-XR with Etymotion Wireless Bluetooth Cable

5.00 out of 5
(1 customer review)


Etymotic Research ER4XR Extended Response Precision Matched In-Ear Earphones (Detachable Balanced Armature Drivers, Noise Isolating, High Fidelity, World Leader Response Accuracy) with Etymotion Wireless Bluetooth Cable.

Etymotic Research ER4XR Extended Response Earphones Features:

  • Single-driver earphones with detachable Bluetooth 5.0 cable
  • Balanced-armature micro-drivers deliver fast transients and pin-drop detail
  • Frequency- and volume-matched rivers ensure you get studio-quality sound
  • Extended bass response
  • Swappable ear tips provide up to 42dB of passive external noise isolation
  • In-line remote gives you control over playback
  • Built-in microphone lets you take calls while on the go
  • 24-bit/48kHz Lossless compression ensures you hear the audio as it’s intended to be
  • AKM Velvet Sound AK 4331 DAC unit provides impressive sound quality
  • Assorted ear tips include foam and 3-flange tips


Etymotic ER4 XR with Etymotion Wireless Bluetooth Cable

etymotic_er4_xr with Cable

Over 30 years ago, Etymotic Research 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 true reference standard for high-definition, 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. Paired with the new Etymotion Wireless Bluetooth cable these earphones are unstoppable and sound better than anything else on the market today. With built-in functionality to answer calls, play/pause, and change tracks it’s the ultimate in audiophile portability.

The Etymotic ER4XRs’ top qualities are the detail and definition of the midrange, rewarding the closest listening.

ER4 XR earphones with balanced-armature, precision-matched, custom-tuned drivers

Etymotic ER4XR earphonesWorld 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

Are you chasing “accuracy” in sound? Well you should probably be looking at the Etymotic ER4SR and ER4XR!

Features ER4XR Etymotic Earphones with bluetooth

  • Professional quality and reliability
  • Precision-matched, custom-tuned drivers
  • Precision machined metal bodies with anodized finish
  • Bluetooth cable
  • An assortment of noise-isolating ear tip options to ensure proper seal and comfort

The ER4XR is a straightforward, wired in-ear headphone that puts the focus on listening pleasure.

Highest noise isolation earphones

  • ER4XR’s are the 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

ER4XR is the earphone for music lovers and hi-fi enthusiasts who want uncompromising accuracy in the mid-range and high frequencies…

ER4XR Etymotic Earphones come with the best durability and warranty

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

Included when you purchase the ER4XR Etymotic Earphones

  • ER4XR Etymotic EarphonesEarphones
  • Bluetooth cable
  • ¼” stereo phone adaptor
  • An assortment of ear tips, 2 flanged tips included
  • Shirt Clip
  • Filter removal tool and replacement filters
  • 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. ER4XR Etymotic earphones are ideal for anyone looking for exceptional sound quality with just the right amount of low-end enhancement.

Etymotic bluetooth cable

The Etymotion BT from Etymotic is an evolution in the Etymotic brand but also in the Evolution of the Bluetooth cable. Utilizing the latest Qualcomm chip the Etymotion BT supports AptX, AptXHD, and AptX LL giving it 24 bit/48khz lossless capabilities. The Etymotion BT is the first of its kind to have a dedicated DAC and headphone Amplifier installed. The AKM AK4331 with Velvet Sound Technology is far superior to the built-in solutions and will give the Etymotion BT the edge over the competition in sound quality and volume. This cable is designed for use with the latest Etymotic ER Series earphones and will also work on most other earphones that have MMCX connectors.

Accurate Earphone Reproduction

For earphones to have 100% accuracy, a recording of live performances 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.

Custom fit options for your ER4XR’s

For even better sound isolation have a look at our Custom tips option.

Technical Specs

Frequency Response 20 Hz – 16 kHz
Transducers High performance, balanced armature micro-drivers
Noise Isolation 35-42 dB
Impedance (@1kHz) 4XR (45 Ohms) 4SR (45 Ohms)
Sensitivity (@1 kHz) SPL at 0.1v 4XR (98 dB) 4SR (98 dB)
Maximum Output (SPL) 122 dB
Cable Bluetooth
User-Replaceable ACCU-Filters Yes
Warranty 2 Years
Custom-Fit Option Yes

Related terms and products: ER4 XR, etymotic research er4-xr, etymotic earplugs, etymotic earphones, In-Ear Earphones, Etymotic Research ER2XR, Etymotic ER4XR In-Ear Extended Response Earphones, Etymotic Research ER4XR, In-Ear Earphones, Noise Isolating, ER4 microPro Earphones, Etymotic ER4 MicroPro Noise-Isolating, In-Ear Earphones

Delivery times:
If the product is in stock, we will usually ship within 1-2 days. If not, it will take about 1-2 weeks for new stock to come in.

1 review for Etymotic ER4-XR with Etymotion Wireless Bluetooth Cable

  1. 5 out of 5

    Chris M.

    These are headphones with astonishing tonal accuracy, compared to almost any other IEM, with just a touch of extra warmth. Hard to beat for the price.

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Etymotic ER4XR Super Review

Are you chasing “accuracy” in sound? Well you should probably be looking at the Etymotic ER4SR and ER4XR. They’re generally accepted by the audio industry as highly accurate — maybe the most accurate — but does that mean they’re something audio nerds like me want to listen to? Let’s unbox and review the ER4XR to find out.

Etymotic ER4-XR with Etymotion Wireless Bluetooth Cable