ER2XR Limited Edition Extended Response Earphones


ER2XR Limited Edition Extended Response Earphones
Rated 5.0 out of 5 stars
1 Review
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The ER2XR offers Etymotic’s renowned passive isolation, providing 35-42 dB attenuation. You will hear all the details in the music with lower volume levels that are safer for your hearing. The flat mids and highs, along with the emphasized bass of the ER2XR, will appeal to consumers and audiophiles who like a little more presence of bass.

The ER2XR shells are made of anodized aluminum, CNC machined with extremely tight tolerances. Using a single dynamic driver allows for a very accurate IEM without the added complexity of crossovers, and helps keep the aluminum body small and slim. Included is a user-replaceable cable.

The ER2XR is ideal for musicians, audiophiles, and consumers on a budget, who are looking for in-ear monitors that are easy to drive, and prefer the added warmth in the bass frequencies.

Which ER2 is right for you?

Both ER2 models, the ER2SE and ER2XR, use the same low-impedance dynamic drivers. That means they are easy to drive, and no amplifier is required. The only difference between the 2 models is the tuning of the lower (bass) frequencies. The “Studio Edition” ER2SE is tuned to have a flat frequency response. The “eXtended Response” ER2XR is tuned to have an emphasized bass, adding 1-2dB to the mid-bass and 3-4dB to the sub-bass. The rest of the frequencies are practically identical to the ER2SE.

ER2SE is a great choice for audio creators and musicians on a budget, who require a precise and neutral sound reproduction. ER2SE is also the IEM of choice for consumers who prefer to listen to their music exactly the way it was recorded.

ER2XR is favored by those who enjoy the extra bass presence and body when listening to their music. The extra bass is done tastefully without turning the ER2XR into a bass heavy IEM.

Frequency response graphs and Etymotic’s target:

Etymotic’s target frequency response graph represents a “perceptibly flat” frequency response. Our goal is to have a flat frequency response curve when the music notes hit your eardrums. To achieve that, we need to account for the resonance inside the average ear canal, since IEMs bypass the outer ear structure. The result is the need for higher SPL in the 2-5k region (lower treble) for compensating said resonance. That is the reason for the “hump” in that region.

The target curve that Etymotic is using for tuning our IEMs differs slightly from the Harmon preference curve. It was developed in-house more than 20 years ago, leveraging on our human hearing expertise and acoustics research.

Accurate Earphone Reproduction

When tuning in-ear monitors to accurately reproduce a recording of a live performance, our goal is for the sound hitting the eardrums to be identical to that at 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. That is the reason for the “hump” in the frequency response graph, which assures the eardrums perceive a perfectly flat frequency response for all frequencies.

What’s In the Box?

  • In Ear Monitors
  • Detachable 4 ft. cable with 3.5mm gold plated stereo plug
  • Assortment of eartips: 4 Dual Flange Silicone Pairs: S, M, L, XL. 2 Triple Flange Pairs: Standard and Large. and 2 Foam Pairs: Standard
  • Filter removal tool and replacement filters to protect the BA drivers from ear wax
  • Shirt clip
  • Zippered storage case

Technical Specs

  • Frequency Response: 20 Hz – 16 kHz
  • Transducers: High performance moving coil dynamic driver
  • Noise Isolation: 35dB using silicone ear tips, 42dB using foam ear tips
  • Impedance: 15 Ohms @ 1kHz
  • Sensitivity: 96 dB @ 1kHz, 1mW
  • Maximum Output (SPL): 120 dB
  • Cable: Detachable 4 ft cable with MMCX connectors
  • User Replaceable ACCU-Filters: Yes
  • Warranty: 2 Years
  • Custom-Fit Option: Yes



Standard delivery takes between 8 and 12 business days*. Express delivery takes 4-8 business days.

*Due to recent weather events and staff shortages, NZ is advising delays of up to 5 business days beyond the above estimates.

Postage to other international locations generally takes 15+ days. Australian orders should be made from our Australian store.


We ship daily Monday to Friday from our warehouse in Sydney, Australia. 


If you order before 4.30pm NZST on a weekday your order will ship same-day with few exceptions. If you order on the weekend or after 4.30pm NZST on a Friday your order will ship the following Monday.


Shipping on orders valued $90 or more are free! Shipping costs on orders valued under $90 depend on shipping method selected at checkout.


Please see our Returns Policy.



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Asset 2
Rated 5.0 out of 5 stars
Based on 1 review
Total 5 star reviews: 1 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
100%would recommend this product
ProtectionRated 5.0 on a scale of 1 to 5
QualityRated 4.0 on a scale of 1 to 5
ComfortRated 4.0 on a scale of 1 to 5
1 review
  • SH Profile picture for Shannon H.
    Shannon H.
    Flag of Australia
    Verified Buyer
    I recommend this product
    Age Range 45 - 54
    Gender Male
    Used For Musician
    Rated 5 out of 5 stars
    10 months ago
    Comparable to $500 + direct drivers

    Excellent sound reproduction. The spatial imaging is not excellent, but that is comparing it to much more expensive IEMS. At this price range, almost nothing can compare.

    I read a lot of reviews from experts who’s opinions I trust. Hence I was expecting much. Even with such high expectations, I am extremely impressed by the precision and depth. Not only do they compare well to expensive direct driver IEMs I own; but they give some of my triple and quad balanced armature IEMs competition with a lot of the modular synth, experimental electronic music I listen to. At this price, if you value quality music reproduction these are IEMs that should be in your collection.

    ProtectionRated 5.0 on a scale of 1 to 5
    QualityRated 4.0 on a scale of 1 to 5
    ComfortRated 4.0 on a scale of 1 to 5
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