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 ER3SE Studio Edition Balanced Armature In-Ear Earphones

Etymotic ER3SE Studio Edition Balanced Armature In-Ear Earphones

Product ID: 238799232

Details

Brand
Etymotic
Colour
Black
Ear Placement
In Ear
Form Factor
In Ear
Impedance
22 Ohms

🎧Balanced Armature Driver for pristine sound

🔇Up to 42dB passive noise isolation

🔌Detachable 4ft gold-plated cable

Description

🎶 Hear every detail, miss nothing — the pro’s choice for pure sound clarity.

REPLACEABLE CABLES - 4ft reinforced detachable cables with MMCX connectors for easy upgrades and longevity.
CUSTOMIZABLE COMFORT - Includes multiple silicone and foam tips for a perfect, secure fit tailored to your ears.
STUDIO GRADE ACCURACY - Experience neutral, flat frequency response tuned for true-to-life sound reproduction.
DURABLE PRECISION BUILD - Machined anodized aluminum shells ensure a compact, robust design for daily use.
UNMATCHED NOISE ISOLATION - Block out distractions with up to 42dB passive noise cancellation using foam tips.

The Etymotic ER3SE Studio Edition in-ear earphones deliver professional-grade audio accuracy with a single balanced armature driver, offering a neutral frequency response from 20 Hz to 16 kHz. Crafted from precision-machined anodized aluminum, these earphones provide exceptional durability and comfort. With up to 42dB of passive noise isolation and detachable gold-plated cables, the ER3SE is engineered for audiophiles, sound engineers, and discerning listeners who demand uncompromised sound fidelity and long-lasting performance.

Specifications

ASIN	B07665KVD1
Age Range Description	Adult
Antenna Location	Music
Audio Driver Size	6 Millimetres
Audio Driver Type	Balanced Armature Driver
Brand	Etymotic
Brand Name	Etymotic
Cable Features	Detachable
Carrying Case Color	Black
Carrying Case Weight	150 Grams
Colour	Black
Control Method	Touch
Control Type	Noise Control
Customer Reviews	4.2 out of 5 stars 317 Reviews
Ear Placement	In Ear
Earpiece Shape	Rounded Tip
Enclosure Material	Metal
Form Factor	In Ear
Frequency Range	20Hz - 16kHz
Global Trade Identification Number	00846430002104
Headphone Form Factor	In Ear
Headphone Jack	3.5 mm Jack
Headphones Ear Placement	In Ear
Impedance	22 Ohms
Impedance Unit of Measure	22 Ohms
Is Autographed	No
Item Weight Unit of Measure	0.02 Kilograms
Manufacturer	Etymotic Research
Model Name	ER3SE
Model Number	ER3SE
Network Connectivity Technology	wired usb
Noise Control	Sound Isolation
Number of Items	1
Product Features	Noise Cancellation
Style Name	In-ear
UPC	846430002104
Unit Count	1.0 Count
Water Resistance Level	Not Water Resistant
Wireless Technology Type	;;

Reviews

M**O

11.03.2023

A**R

9.08.2023

ア**本

17.09.2025

L**N

30.08.2019

J**E

5.06.2022

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