Don't be afraid of picking in between 4SR because it's "Studio Reference". These have great bass and is definitely there on all songs. It's a very clean quick punch bass that has is well defined (unlike the lower end IEMs in which all bass sound the same, the bass here has octaves).
Instrument separation is a given as the detailing is phenomenal.
Better than even thousand dollar IEMs like Shure SE846 in terms of sound quality.
This is Etymotic's flagship model. The ER4 SR. The most accurate diffused neutral tuned IEM (outside electrostatics).
Prepare to hear music like water. Clean and detailed.
The "ear drilling" might take some people some time to get used to (for me, it was fine right away but I recall when I was younger, the "ear drilling" on the ER4P was definitely too uncomfortable for my taste).
It's obvious the pros are as follows:
1. Sound quality. Sound quality. Sound quality. If you want to step up from here, you will have to spend thousands+ on IEMs and even then it's debatable. This is probably the best sound quality you can get out of an IEM under a $1000 in today's market. I hear good things about U12t, Andromeda, etc. but those are so far up the price point that it shows how great this IEM is sound quality wise.
2. Noise isolating. Cause it drills to your ears.
3. You will hear all the details in the piece because it is balanced in a diffused field manner (all frequencies should be able to be heard).
The cons though to be aware of:
1. Cable is too long (1 ft longer than others). And the braided part (top) has quite a lot of microphonics which can be pain in the neck if you wear winter jackets. You will need to use the clipper that comes with the IEM in between your jackets when wearing winter jackets or otherwise, your earphone on your ears will feel heavy.
2. If you find drilling to your ears uncomfortable, well.. you should look elsewhere cause comfort matters.
3. If you have a girlfriend or a significant other, it's probably better going for another IEM as this IEM is really hard to share with others. No one wants to touch products that were already drilled into someone else's nasty ears and it's just difficult in general to share 1 plug to another with this type of drilling.
4. Sound stage and imaging can be 2-dimensional. This is what really separates the $thousands+ IEM from here. Not detailing. More of imaging and sound stage. This IEM has a soundstage of in between your two ears (aka head). Don't expect more.
5. If you want the best bass quality, opt for bassy IEM like Shure SE846. The "rumbles" don't exist with this IEM.
Other than that, I wholeheartedly recommend Etymotic ER4SR at any price range under $1,000. And if you can't afford it, Etymotic ER2SE.
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This Item  Etymotic ER4SR Studio Reference Earphone,Black | Recommendations  |  |  |  |  | |
| Price | -16% $189.88 List: $224.96 | $22.99 | $17.99 | $24.99 | $69.99 | $381.22 |
| Delivery | Get it as soon as Wednesday, Mar 12 | Get it as soon as Wednesday, Mar 12 | Get it as soon as Wednesday, Mar 12 | Get it as soon as Wednesday, Mar 12 | Get it as soon as Monday, Mar 17 | Get it Mar 11 - 12 |
| Customer Ratings | ||||||
| Sold By | Amazon.com | LEAUDIO | LEAUDIO | Linsoul Audio | Linsoul Audio | GearTree |
| connectivity tech | Wired | Wired | Wired | Wired | Wired | Wired |
| headphones form factor | In Ear | In Ear | In Ear | In Ear | In Ear | In Ear |
| connector type | 3.5mm Jack | 3.5mm Jack | 3.5mm Jack | — | 3.5mm Jack | 3.5mm Jack |
| noise control | sound isolation | — | sound isolation | — | sound isolation | — |
| headphones jack | Detachable Connector | 3.5 mm Jack | 3.5 mm Jack | 3.5 mm Jack | 3.5 mm Jack | 3.5 mm Jack |
| cable feature | Detachable | Detachable | Retractable | Detachable | Detachable | Detachable |
| control type | Media Control | — | Media Control | — | Volume Control | Volume Control |
| material | Aluminum, Metal | Aluminum | pc | Silicone, Plastic, Metal | Copper | Metal, Stainless Steel |
| model name | ER4SR | CHU II | Quarks | 7Hz x Crinacle Zero:2 | TINHIFI T3 Plus | EVO-3 |
| frequency range | 20 Hz – 16 kHz | — | 20 Hz - 20 kHz | 10Hz to 20kHz | 10-20kHz | 20 Hz - 20,000 Hz |
From the manufacturer
Etymotic Research, Inc. is an engineering-driven research, development and manufacturing company. The name 'Etymotic' (pronounced 'et-im-oh-tik') means 'true to the ear'. Innovation, education and hearing conservation are central to Etymotic's mission.
ER4SR Studio Reference
The World's Most Accurate Earphones Just Got Better!
Over 30 years ago, Etymotic 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 gold standard for high-definition, in-ear earphones.
- Detachable 5 foot cable
- High performance balanced-armature drivers
- Sleek driver bodies with anodized finish
- Braided cables for reduced microphonic effect
Why Etymotic?
Etymotic designs products to measure, improve and protect hearing, and enhance the listening experience of music lovers everywhere. Audio engineers, musicians and audiologists at Etymotic have generated over 100 patents issued and pending.
Why ER4SR Studio Reference?
ER4SR is Etymotic's new reference standard hi-fidelity earphone for those who demand nothing less than the highest fidelity. The next generation of our long-revered flagship earphone, the ER4S, the ER4SR delivers increased accuracy with greater sensitivity.
Like its predecessor, the ER4SR channels are precision matched within an industry-leading 1dB across frequencies from 100Hz to 10kHz.
The new ER4SR incorporates significant cosmetic and functional improvements, from a sleek, anodized and laser-etched aluminum body to the reinforced, user-replaceable detachable cable. The ER4SR is a must have for discerning engineers, audiophiles, and consumers wanting the most accurate in-ear earphone available.
Specifications
- Frequency response 20Hz-16kHz
- Channel matched within 1 dB from 100Hz to 10kHz
- 35-42 dB noise isolation
- Impedance 45 ohms
- Sensitivity: 98 dB SPL at 1kHz, 0.1V drive level
- 122 dB maximum output
- Assembled and precision matched in the United States
User Detachable Cables
To detach the cables, pull the cable connector away from the earphone body. Pull straight out-Do Not Twist.
To attach the cables, align the key tab on the cable connector with the notch in the body of the earphone. Press together until it snaps in place.
Changing the Filters
Etymotic earphones have special filters that smooth the frequency response and prevent earwax from entering the earphones. The filters are located at the end of the earphone and are visible when the eartip is removed. When a filter becomes clogged it should be replaced. Filters should be changed when output decreases or sound quality declines.
In The Box
ER4SR Studio Reference earphones.
Assorted eartips and 1/4" stereo phone adapter.
Filter removal tool and replacement filters.
Shirt Clip and Carrying Case.
Performance Certificate.
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Quality Control is Utterly Absent
Received a brand new pair of these, very gently removed them from the box and plugged them in to my computer, and was floored: the left earbud (SN 065169) is totally silent and broken. To rule out a bad cable, I swapped the left and right earbud cables, and the bad earbud (now on the right) is still totally silent. Just to be sure I even replaced the filter tip to make sure it wasn't blocked, and it's still silent. I tried plugging them into a different computer, I tried plugging them into my phone, I tried turning the volume all the way up to 100%, and no matter the source only one earbud produces any sound. Unbelievable that this is the quality control you get for nearly $200! I guess the cute "Certificate of Performance" they included was just for show?
Top reviews from the United States
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Top reviews from other countries
- ToadReviewed in Saudi Arabia on February 7, 2025
Better than ANC for noise reduction
Color: BlackVerified Purchase -
BriceReviewed in France on January 18, 2025
Etymotic la référence des IEM reste la référence
Color: BlackVerified Purchase -
CaLorittoReviewed in Italy on June 10, 2021
Bisogna essere degli esperti audiofili
Color: BlackVerified Purchase -
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