Can the sony ier-m9 work with a windows pc using the 3.5 mm connection? would i need other hardware? will there be any audio quality loss if yes?

If you want to use PC as source, I recommend you to buy the RME-ADI 2 FS or Chord Mojo 2. Your PC will send digital signal without noise to Mojo2 or RME and it converts the digital to analog signal cleanly. If you plug the headphone directly to 3.5mm, it will tap into the noise from the PC and the 3.5mm does not have enough current to drive the full potential of headphone. You will lose details.

(sound wise) how does these compare to "wf1000xm4“ or "wh1000xm4" (want quality "branded" wired earbuds everyday use) ?

The sound quality of the IER-M9 is miles ahead. The details, instrument separation, timbre, soundstage and dynamics are simply far better.

Can these be moved with just an iPhone?

Hi Carlos, Thank you so much for your interest in our IER-M9 In-ear monitor headphones. If your iPhone supports stereo mini-plug (3.5 mm) connection, yes, it will work. Thanks again for considering Sony! - Romeo

Are these sweat and dust resistant?

I have sweat with these while playing the drums. I have had no issues. As far as dust resistant. I do not know of any headphone/ear-monitor that has ever succumb to dust. I keep them in the case anyway. I hope that helps.

Sony Ier M9 In Ear Monitor Headphones Black

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Description

🎶 Elevate your sound game — because your ears deserve the best.

SEAMLESS CONNECTIVITY - Industry-standard 4.4mm balanced connection guarantees pristine audio signal with minimal interference.
PRECISION AUDIO MASTERY - Experience ultra-clear sound with Sony’s 5 unique balanced armature drivers delivering every musical detail.
COMPLETE COMFORT KIT INCLUDED - Multiple earbud sizes and hybrid silicone options ensure a personalized fit, plus a premium carrying case for protection.
SECURE FIT FOR ON THE GO PROS - Preformed ear hangers provide a stable, comfortable fit for all-day wear during intense work or travel.
BUILT TO LAST DESIGNED TO IMPRESS - Magnesium alloy outer housing ensures lightweight durability and a sleek, professional look.

The Sony IER-M9 in-ear monitor headphones combine 5 balanced armature drivers with magnesium alloy diaphragms and housing to deliver studio-grade sound clarity and durability. Featuring a secure fit with preformed ear hangers and a 4.4mm balanced connection, these wired headphones come with a comprehensive set of earbud sizes and accessories, making them the ultimate choice for discerning audiophiles and professionals seeking precision audio on the move.

Specifications

ASIN	B07HKRQKSJ
Additional Features	Sony IER-M9 In-ear monitor headphones
Age Range Description	Adult
Antenna Location	Recording
Audio Driver Type	Balanced Armature Driver
Brand	Sony
Built-In Media	Headphones
Cable Features	Tangle Free
Carrying Case Color	Black
Carrying Case Material	Silicone
Color	Clear
Compatible Devices	Cellphones, Tablets, Laptops, Desktops
Connectivity Technology	Wired
Control Method	Remote
Control Type	Media Control
Controller Type	Media Control Cable
Customer Reviews	4.2 4.2 out of 5 stars (57)
Earpiece Shape	Rounded tip
Enclosure Material	Magnesium alloy
Frequency Range	5 Hz–40,000 Hz
Global Trade Identification Number	00027242913035
Headphone Folding Features	In Ear
Headphone Jack	3.5 mm Jack
Headphones Ear Placement	In Ear
Impedance	20 Ohms
Is Autographed	No
Item Type Name	Headphone
Item Weight	454 g
Manufacturer	Sony
Model Name	IER-M9
Model Number	IERM9
Noise Control	Sound Isolation
Number of Items	1
Specific Uses For Product	Music
Style Name	Modern
Subject Character	no character
Theme	Music Production
UPC	027242913035
Unit Count	1 Count
Water Resistance Level	Not Water Resistant
Wireless Technology	NFC

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