Etymotic ER4S headphone

$249.95 Price Tier: Standard

5.0 (1)

3 Critic Reviews

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Page last updated Feb 14, 2026

Pricing and availability

We compare 600+ stores and found this item at 1 store. Prices updated January 14, 2026.

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3.6 (81)

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Average Price: $250

Standard/Professional

$100

$301+

Price Tier

In the Headphones & In-Ear Monitors category, Etymotic ER4S headphone is priced in the Standard/Professional range. This is quality gear at a fair price point, suitable for beginners, hobbyists, and pros alike.

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Description

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Step into a world of precise auditory detail with the Etymotic ER4S headphones, designed for audiophiles who demand exceptional sound quality. These in-ear monitors are celebrated for their accurate sound reproduction, making them a favorite among musicians and sound engineers. With balanced armature drivers, the ER4S delivers a flat frequency response, providing a true representation of music as it was intended by the artist. Perfect for studio use or critical listening, these headphones boast an impressive noise isolation capability, allowing you to focus on the nuances of your audio without distraction.

The ER4S headphones come with a durable, detachable cable for easy replacement and longer product life. They are designed for comfort during extended listening sessions, featuring a fit that conforms naturally to the ear canal. This meticulous craftsmanship ensures not only a secure fit but also an unparalleled listening experience.

Whether you're mixing tracks or simply enjoying your favorite album, the Etymotic ER4S headphones are engineered to meet the high standards of professional audio. Their robust build and attention to detail make them a reliable choice for those who refuse to compromise on sound quality.

Key Features:

Balanced armature drivers for precise audio reproduction
Detachable, replaceable cable for extended longevity
Superior noise isolation for immersive listening
Flat frequency response ideal for studio monitoring
Comfortable fit for long-term use
Suitable for both professional and personal audio applications

Reviews

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PROS

Excellent sound clarity and accuracy for authentic audio experience
Great for classical music due to balanced sound profile
Includes multiple earpiece options for customizable fit
Strong packaging with two convenient carrying cases
Performs exceptionally with a headphone amplifier
Competitively priced when bought from certain retailers
Light weight and effective noise isolation without needing batteries

CONS

Bass response is weak unless earphones are tightly sealed
Long design protrudes from ears, may cause discomfort
Flimsy cords prone to microphonics and potential breakage
Requires deep insertion for optimal performance, can be uncomfortable
Not ideal for active use due to cord issues
Limited ear tip sizing included in package may not fit all users

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Etymotic ER4S headphone.

Mods and upgrades

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Sensaphonics sleeves and custom molded ear inserts enhance timbral resolution and provide a more comfortable fit without losing detail.
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Comply P-Series foam eartips are recommended for maximum isolation and comfort, though they are costly and short-lived.
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The Etymotic tuning kit, particularly the red filters at 2200 ohms, subtly enhances bass presence without drastically altering the sound signature.
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Value and pricing

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Shoppers can find notable deals on auction sites, acquiring models like the ER3XR and SE for as low as $70 USD.
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Comparisons

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The ER4-SR is considered significantly superior in clarity and instrument separation compared to budget Chi-Fi IEMs.
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ER4S can be paired with a 75 ohm resistor to match the ER4P, transforming its performance with an amp into a different beast.
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ER4SRs are considered a better value than Moondrop Blessing 2, offering similar, if not superior, tonality at a lower price.
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User experience

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Owners describe a learning curve in getting used to deep insertion for a proper seal due to tactile sensitivity.
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Even after 15 years, the ER4P remains a staple for some users, highlighting its longevity and enduring performance quality.
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Owners note that the smallest triple flange tips provide the optimal sound, whereas larger or foam tips can cause treble peaks.
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Use cases and applications

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The ER4-SR effectively isolates ambient noise, such as loud construction, without active noise cancellation, making them ideal for noisy environments.
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The ER4XR is favored for classical music when paired with a high-resolution DAC and the Apple Classical app, delivering exceptional orchestral sound.
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ER4XR, when used with a 4dB 105Hz low shelf EQ, can mimic the sound of bassier IEMs while maintaining clarity.
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These IEMs are excellent for low-volume listening due to their seal and soundproofing capabilities, potentially preserving hearing.
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Build quality

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The cable is infamously microphonic, and aftermarket cables with less microphonics are hard to find, impacting on-the-go usability.
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Features and functionality

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The sound is described as textbook flat, closely matching the tonality of Sennheiser HD600s, making them ideal for those sensitive to non-neutral tonality.
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Setup and maintenance

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Inserting the IEMs upside down with the connection pointing up and looping over the ear can improve seal for some users.
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Critic Reviews

Etymotic Research ER4s : Legendary Reference | Earmass

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The Etymotic ER4S headphones deliver impressive clarity and detail, praised for their analytical sound that many audiophiles adore. However, their lack of bass depth and body may alienate those who prefer a fuller sound. While the ER4S excels in speed and precision with an airy presentation, it may feel thin and bright for some listeners. Overall, these headphones are a must-try for serious audiophiles, but they come with caveats that could deter casual listeners.

positive

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Etymotic Research ER-4S Canal Phone earspeakers | Stereophile.com

stereophile.com

Etymotic's ER-4S Canal Phones are a traveler's dream, delivering extraordinary sound isolation and deep bass thanks to their snug ear canal fit. Their compact design makes them ideal for on-the-go listening, providing a personal sound oasis amidst noisy environments. However, comfort can be an issue for prolonged use, as they aren't as cozy as traditional headphones. Additionally, achieving the best sound requires proper ear-tip placement, which might deter casual listeners. Still, for audiophiles seeking quality sound on the move, the ER-4S is a powerful, albeit somewhat finicky, choice.

positive

Full Review

Etymotic Research ER4S Review | The Headphone List

theheadphonelist.com

Etymotic's ER4S in-ear monitors stand the test of time with precision sound and unmatched isolation, making them a top-tier choice even after 15 years. The detail in the highs and mids is stunning, but the bass may feel lacking for those who prefer a punchier low end. Comfort can be subjective due to the deep insertion required, and microphonics may bother some users if not clipped properly. Still, with a price that undercuts many competitors, the ER4S delivers exceptional value for audiophiles willing to sacrifice a bit of warmth for clarity.

positive

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