ER2XR Earphones

ER2XR (Extended Response) delivers impactful bass while keeping clear and accurate midrange and treble sound, using high performance dynamic drivers.

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.

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.

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.

· In-Ear-Monitors (Earphones)

· Detachable 4 ft. cable with 3.5mm gold plated stereo plug

· Assortment of eartips:

o 4 Dual Flange Silicone Pairs:  S, M, L, XL.

o 2 Triple Flange Pairs:  Standard and Large.

o 2 Foam Pairs:  Standard.

· Replacement Filters to protect the BA drivers from ear wax

· Filter replacement tool

· Shirt clip

· Zippered storage case

N.G. 09/07/2022

Remarkable Performance (really!) at the price

Wow - hard to believe what you get for the money. My ER2XR’s deliver excellent resolution, super fast transients, a wonderfully natural musical response, and serious bass extension with zero trace of bass bloat in the midrange.

I’m not a fan of the deep insertion silicone tips, but find the foam tips a perfectly acceptable alternative with no compromise in fidelity ( albeit somewhat less external noise isolation ). Etymotic’s gift to the sensible, value driven audiophile!

PS for those who like to fine tune frequency balance, Ety’s reasonably priced filter kit provides a range of options to perfect the HF according to personal taste.

Angelo Lorenzoni  01/01/2022

Amazing Sound

The best IEM I never listen to and waiting for the SE model for get a better closer to the Target

Rick M 06/04/2021

Best IEMs under $100 on earth

Quality and performance under $100. Mind blowing accuracy. A+++

Foam Pairs: Standard

Triple Flange Silicone Pairs: Standard and Large

Dual Flange Silicone Pairs: S, M, L, XL