

🎶 Hear Every Detail, Miss Nothing — The Studio Standard in Your Ears
The Etymotic ER4SR is a professional-grade in-ear monitor engineered for audiophiles and sound engineers who demand unmatched accuracy and noise isolation. Featuring precision-matched balanced armature drivers within ±1dB, a durable anodized aluminum body, and detachable braided MMCX cables, it delivers studio reference sound with up to 42dB passive noise isolation. Each pair is custom-tuned and assembled in the USA, making it the ultimate choice for critical listening and recording environments.








| ASIN | B01GW785KQ |
| Age Range (Description) | Adult |
| Audio Driver Type | Balanced Armature Driver |
| Best Sellers Rank | #84,313 in Electronics ( See Top 100 in Electronics ) #90 in Recording In-Ear Audio Monitors #3,971 in Earbud & In-Ear Headphones |
| Cable Feature | Detachable |
| Carrying Case Color | Black |
| Carrying Case Material | Aluminum or metal |
| Compatible Devices | Cellphones |
| Connectivity Technology | Wired |
| Control Method | Remote |
| Control Type | Media Control |
| Controller Type | Media Control |
| Customer Package Type | Standard Packaging |
| Customer Reviews | 3.8 3.8 out of 5 stars (272) |
| Date First Available | August 22, 2010 |
| Earpiece Shape | Rounded tip |
| Generation | 2 |
| Global Trade Identification Number | 00846430002012 |
| Hardware Interface | 3.5mm Audio |
| Headphones Jack | Detachable Connector |
| Included Components | In Ear Monitors Detachable, 5 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 Channel-Matching Compliance certificate |
| Input Device Interface | 3.5mm_trs |
| Is Discontinued By Manufacturer | No |
| Item Weight | 3.2 ounces |
| Item model number | ER4SR |
| Manufacturer | Etymotic Research |
| Material | Aluminum, Metal |
| Model Name | ER4SR |
| Noise Control | Sound Isolation |
| Number of Items | 1 |
| Product Dimensions | 32 x 0.25 x 0.25 inches |
| Recommended Uses For Product | Music |
| Sensitivity | 45 Ohm |
| Series Number | 4 |
| Special Feature | In-Ear Monitors |
| Specific Uses For Product | Music, Studio Recording |
| Style | High-Fidelity |
| Supports Bluetooth Technology | No |
| UPC | 846430002012 |
| Unit Count | 1.0 Count |
| Water Resistance Level | Water Resistant |
P**O
Steal for the price in the IEM market
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.
G**R
Etymotics - now with replaceable cords!!
Etymotic makes some of the best earbuds in the market. The great thing about them is they fit tight in your ear and, to me, work far better than any noise cancelling earphones I've seen. At the same time, no one can hear what you're listening to, and since the sound is so good, you can keep the volume lower so as not to damage your ears. I've owned Etymotic's for a good 10 years. The company has been fantastic to me, always replacing the cords free of charge when they break (and after owning a pair for nearly two years and brining back and forth to work in a bag, eventually they get a short). I bought the ER4SR, just released, because for the first time you can buy replacement cords for these. What an awesome idea! Even better, I haven't seen confirmation of this, but I'm fairly confident they'll offer an iPhone lightening connector version as an accessory (they'll have to with Apple's recent stupid move to get rid of the earphone hole). These earbuds are quite pricy to be sure, but they're worth it, whether you're an "audiophile" or just an average music listener, you'll feel like you're hearing your music for the first time. I cannot recommend Etymotic's enough. Highest quality, best sound, best noise reducing (pretty much passive cancelling, like ear plugs), and brand you can buy.
T**L
PRODUCT FAILS AFTER 2 YEARS!
Absolutely love the sound quality of these earphones, but can't afford to keep replacing when they fail. This our families 4th pair! (my son received a pair which failed, then replaced which also failed, I am now on my second pair and they have fortunately failed inside the two year warranty window so at least etymotic has to replace this pair for free). Same issue, over time one or both of the speaker drivers become distorted, slowly reduce output, and then blow. Very frustrating as the sound quality is outstanding. Four pairs that have failed over multiple years, however, do not lie.
M**0
Etymotic ER-4SR Studio Reference Earphone Quick Review by mark2410 Brief: The king is dead, long live the king!!! Price: £330 or in the US US$350 Specifications: Frequency Response 20 Hz-16 kHz, Accuracy Score 4SR (92%), Transducers High performance balanced armature micro-drivers, Noise Isolation 35-42 dB, Impedance (@1 kHz) 4XR (45 Ohms), Sensitivity (@1 kHz), SPL at 0.1V 4XR (98 dB), Maximum Output (SPL) 122 dB, Cable 5 ft. Detachable, Warranty 2 years Accessories: A bunch of tips and huge that case are mostly useless. Order a usable case and either some small olives or Comply’s when you buy them. Build Quality: Ety’s had a stellar build quality reputation when they were plastic, these are now metal and will likely out live you. Isolation: Ety’s are the kings of isolation, they are rated at up-to 42dB reduction. No other earphone or headphone can match them nor can any earplugs. The things you hear are because the sounds have travelled through your jaw rather than in your ears. Microphonics: If you wear them up nothing but they are angled so you probably will want to wear down and the chin slider and shirt clip will help there. Comfort/Fit: A contentious issue. The included tips all suck, pick up some small olives or Comply’s and then with a little lick for lubrication you can insert them. You will feel violated the first time you do this. However once you get used to the strangeness of it they are actually comfortable. I can wear them for hours and hours with no issues so long as I don’t have to repeatedly take them out. That is very wearing on the ear. Aesthetics: They look not bad, though they sit entirely internally in use so who cares, no one can see them. Sound: Well the old ER4 was the reference king. A paragon of neutrality and these are the same. They are slightly more easy to make sound their best as with the lower impedance over the ER-4S you can get a sound quality improvement if you insist on using an inadequate source. Yet I really wonder how many people did that? Were there many ER-4P users out there clamouring for the refinement of the S but weren’t willing to add in the impedance? Still if we ignore that then this is the same sound, in a slightly nicer housing. The old ER4 did look a bit naff and these look much more sleek. Of course since they are brain implants no one can actually see them in use sooooo, yeah who cares? Their audio is as it always has been, largely perfect. They are massively detailed, insanely detailed compared to the likes of most earphones. These are less devices to listen to music than they are an acoustic microscope made to analyse it. If you want all of the details, yey, you have found pretty much the perfect IEM with which to do so. Note that they will expose all flaws so feed them crap at your own peril, they can ruin formerly loved tracks by exposing its flaws you hadn’t noticed before. Value: Wallet ouchy but they are paragons. They are as reference grade as the old ER4 has been for decades and these will be for decades going forward. You want that, and something with a build that means you could do it with one pair, your wallets taking a short term pounding. Pro’s: They are the ultimate in reference quality perfection. Ultimate isolation. Con’s: The XR can do all these can but with a smidge more bass.
N**R
These might be the best IEMs I’ve tried—really flat frequency response, super accurate, and just perfect for anyone who wants that studio-reference sound. No extra bass boost needed—just pure, enjoyable, high-fidelity audio. I’d totally recommend the Etymotic ER4-SR.
B**E
Très bons IEM, très linéaires, propices à l'EQ'ing extrême vous en faites ce que vous voulez, vous les faites sonner comme vous voulez. Ils sont très fournis de base avec différents très bons embouts, câbles, filter kit etc. J'utilise perso les Dual Flange car les Triple ne me vont pas du tout et sont désagréables, ils conservent la signature voulue par Etymotic vous pouvez ainsi utiliser les AutoEQ. Mais perso je reste sur un Shelve de 3db sur les Low end j'aime beaucoup leur signature aucune raison de passer sur du Harman IE. Faites vous une faveur en revanche, quand le matériel fourni sera usé évitez de renouveler avec les accessoires Etymotic pour les câbles et bluetooth, je les ai tous testés ils sont très cher pour rien du tout et extrêmement fragiles. Edit 2025: Les meilleurs pour ce modèle resteront les triple flange. Les fameux. (en vrai on s'y habitue et on ne peut plus s'en séparer), regardez du côté de AZLA ou Spinfit CP155 ou CP240 pour de nouveaux Embouts. Les câbles sont fragiles, mais après avoir testé Lunashop, restez sur des câbles Etymotic honnêtement. 5 étoiles même avec des points faibles, ce sont le seuls écouteurs ou je suis tout le temps impressioné par leur qualité et leur précision, et ça fait 1 an que je les ai. Je n'ai jamais été autant épaté par des écouteurs.
A**.
They are very neutral and provide exceptional noise isolation which I like. But the sound is not satisfactory for me, because it sounds narrow and sibilant. It’s the first time I complain about sibilance ion my life having many high end headphones.
R**A
El hecho de que el mismo nombre tenga la descripción del sonido es un legado de la confianza que la compañía tiene en su producto y firma de sonido. Los ER4SR (Etymotic Research 4, Studio Reference) son eso, una referencia de estudio, significando que todos los sonidos que reproducen son controlados, neutrales, y sin ninguna coloración. En comparación a muchos audífonos, es cierto que todo en éstos es neutral. Incluso llendome más allá y comparandolo con algunos audífonos sobre oreja, éstos son lo más neutral de sonido que he escuchado. El talle puede que no les sea adecuado o cómodo a muchos, pero es necesario en éste caso. También son muy analíticos y estériles, lo cuál puede hacer pensar a muchos que el sonido no justifica el precio, pero no pueden estár más equivocados. Cuando compras éstos audífonos, compras más de 30 (1980~ si mál no recuerdo) años de investigación y desarrollo en cuanto a acústica y audición. Los compras de las manos de una compañia pionera en el campo de la salud auditiva. 🐕🐕🐕🐕🐕/5
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