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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Description

🎶 Elevate your sound game—studio precision meets everyday hustle.

AFFORDABLE PRO AUDIO - Get premium ETYMOLOGICAL sound quality without the premium price tag.
PLUG PLAY CONVENIENCE - Detachable 1.5m MMCX cable with media controls keeps your workflow seamless and stylish.
UNMATCHED NOISE ISOLATION - Block out distractions effortlessly—outperforming many active noise cancelling earphones.
STUDIO GRADE SOUND CLARITY - Experience pristine, flat frequency response tailored for audio pros and enthusiasts alike.
CUSTOMIZABLE FIT DURABILITY - Includes replacement ear tips, filters, and a sturdy zippered pouch for on-the-go resilience.

The ER3SE Studio Edition in-ear earphones deliver professional-grade balanced armature sound with a flat, wide frequency response. Featuring superior noise isolation that surpasses many active noise cancelling models, these wired earphones come with a detachable 1.5m MMCX cable and a full accessory kit for a customizable, durable listening experience—all at an accessible price point.

Specifications

ASIN	B07665KVD1
Additional Features	Sweatproof
Age Range Description	Adult
Amazon Bestseller	#56,623 in Electronics ( See Top 100 in Electronics ) #1,381 in Earbud & In-Ear Headphones
Antenna Location	Music
Audio Driver Size	6 Millimeters
Audio Driver Type	Balanced Armature Driver
Brand	Etymotic
Built-In Media	Ear Cushions
Cable Features	Detachable
Carrying Case Color	Black
Carrying Case Weight	150 Grams
Color	Black
Compatible Devices	Cellphones
Connectivity Technology	Wired
Control Method	Remote
Control Type	Media Control
Customer Package Type	Standard Packaging
Customer Reviews	4.2 4.2 out of 5 stars (323)
Earpiece Shape	Rounded tip
Enclosure Material	Metal
Frequency Range	20Hz - 16kHz
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	エティモティック(Etymotic)
Model Name	ER3SE
Model Number	ER3SE
Noise Control	Active Noise Cancellation
Number of Items	1
Specific Uses For Product	studio
Style Name	Main unit only
Theme	Audio Engineering
UPC	846430002104
Unit Count	1.0 Count
Water Resistance Level	Not Water Resistant
Wireless Technology	Bluetooth

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