How many drivers per ear piece are there?

From the manufacturer's website. "Using a single Balanced Armature (BA) driver allows for extremely accurate IEM without the added complexity of crossovers, and helps keep the aluminum body small and slim." So that means 1/ear to me.

I have been using Etymotic mk5 phones for a long time... would these have a similar level of comfort, or perhaps be more comfortable?

The ER3SE earphones are as comfortable as your choice of earplugs. You have a lot of options including those from other vendors. I have seen the three-lobe models, two-lobe models, foam, and made-to-order custom-fit earplugs. Personally, I found the two-lobe earplugs to be comfortable and Westone makes a very comfortable custom-fit earplug that will last for several years. If price is not a problem, I highly recommend the Westone made-to-order earplugs for the ER3SE. They provide the most comfort and the best noise isolation.

Can the main detachable peice be replaced (not the detachable foam part but the main driver)? I'm getting low volume on one side.

With low sound on one side, the first thing to do would be to replace the filter. It's probably clocked with earwax. They're replaceable and that's what they're there for. Otherwise, when I sent in a pair of earphones, they replaced the earpiece/driver on one side.

Are these good for listening to music through my phone? Or are these just made for studios?

I use them with my phone all the time. They are really good at blocking the outside noise. I love them when I'm flying.

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Etymotic Research ER3SE Studio Edition High Performance In-Ear Earphones (Detachable Balanced Armature Drivers, Noise Isolating, High Accuracy, Studio Grade Accuracy),Black

Etymotic Research ER3SE Studio Edition High Performance In-Ear Earphones (Detachable Balanced Armature Drivers, Noise Isolating, High Accuracy, Studio Grade Accuracy),Black

Product ID: 256211085

Details

Brand
Etymotic
Colour
Black
Ear placement
In Ear
Form factor
In Ear
Impedance
22 Ohms

🎧Balanced Armature Driver for studio-grade accuracy

🔇Up to 42dB passive noise isolation

🔌Detachable 4ft reinforced cable with MMCX connectors

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KD 57.55

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Description

🎶 Hear every detail, miss nothing — the studio goes wherever you do.

TRUSTED BY PROS - Preferred by audio engineers and musicians for critical listening and mixing on the go.
DURABLE DETACHABLE - Reinforced cables with gold-plated 3.5mm plug and MMCX connectors for easy replacement and longevity.
PRECISION STUDIO SOUND - Experience flat, neutral frequency response tuned for true-to-recording accuracy.
COMFORT MEETS PERFORMANCE - Anodized aluminum shells and ergonomic silicone tips ensure all-day comfort without compromising sound.
UNMATCHED NOISE ISOLATION - Block out distractions with up to 42dB passive noise attenuation using foam tips.

The Etymotic ER3SE Studio Edition in-ear earphones deliver precise, studio-grade sound with a single balanced armature driver and a flat frequency response from 20 Hz to 16 kHz. Featuring up to 42dB passive noise isolation, detachable reinforced cables, and precision-machined metal bodies, these earphones are engineered for audiophiles, musicians, and professionals seeking accurate audio reproduction and durable comfort in a compact design.

Specifications

ASIN	B07665KVD1
Additional Features	Etymotic designs products to measure, protect and improve 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.
Age Range Description	Adult
Antenna Location	Music
Audio Driver Size	6 Millimeters
Audio Driver Type	Balanced Armature Driver
Best Sellers Rank	#72,415 in Electronics ( See Top 100 in Electronics ) #3,815 in In-Ear Headphones
Brand	Etymotic Research
Built-In Media	Headphones, case, tip pack, manual
Cable Features	Detachable
Carrying Case Color	Black
Carrying Case Material	Cardboard or paper
Carrying Case Weight	150 Grams
Color	Black
Compatible Devices	Cellphones
Connectivity Technology	Wired
Control Method	Remote
Control Type	Media Control
Controller Type	Touch
Customer Package Type	Standard Packaging
Customer Reviews	4.2 4.2 out of 5 stars (315)
EU Spare Part Availability Duration	2 Years
Earpiece Shape	Rounded Tip
Enclosure Material	Metal
Global Trade Identification Number	00846430002104
Headphone Folding Features	In Ear
Headphone Jack	3.5 mm Jack
Headphones Ear Placement	In Ear
Impedance	22 Ohms
Is Autographed	No
Item Type Name	ER3SE Studio Edition In-Ear Earphones
Item Weight	0.02 Kilograms
Manufacturer	Etymotic Research
Model Name	ER3SE
Model Number	ER3SE
Noise Control	Sound Isolation
Number of Items	1
Specific Uses For Product	Studio
Style Name	SE - Studio Edition
Subject Character	no character
UPC	846430002104
Unit Count	1 Count
Water Resistance Level	Not Water Resistant

Reviews

M**O

Ottimi auricolari dal suono naturale

Come da titolo per me che ascolto musica prevalentemente acustica hanno una risposta neutra su tutta la gamma, buona la dinamica compatibilmente con le piccolissime dimensioni Per farle cantare bisogna trovare gli adattatori giusti per le proprie orecchie cioè quelli che meglio ti isolano dai rumori esterni, forniti comunque in dotazione. Attenzione al volume di ascolto perché arrivano molto vicini al timpano.

11.03.2023

A**R

Etymotic hits another one out of the park

9.08.2023

ア**本

高音に魅せられます！

エティモもこれで4個目ですが、BAの高音の美しさ、解像度の高さは相変わらずです。スマホだけでの使用ではベストバランスの1台だと思います。

17.09.2025

L**N

Well worth the extra pounds

30.08.2019

J**E

So boring I'm crying tears of joy

5.06.2022

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago

Zainab N.

Fantastic and great service. Shipping was faster than expected.

1 week ago

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