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.

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Description

🎶 Elevate your sound game with Sony’s precision-engineered IER-M9 — hear what others miss!

DURABLE ELEGANCE - Lightweight magnesium alloy housing ensures long-lasting comfort and resilience
TAILORED COMFORT - Includes 14 earbud options (silicone & hybrid) for a perfect personalized seal
SECURE FIT ALL DAY - Preformed ear hangers provide a stable, fatigue-free fit for marathon listening sessions
PRO GRADE CONNECTIVITY - 4.4mm balanced connection guarantees noise-free, high-resolution audio transmission
PRECISION AUDIO MASTERY - 5x Balanced Armature drivers deliver studio-grade sound clarity and depth

The Sony IER-M9 in-ear monitors feature 5 balanced armature drivers housed in a lightweight magnesium alloy shell, delivering exceptional studio-quality sound. Designed for professionals and audiophiles alike, they offer a secure fit with preformed ear hangers and an extensive selection of earbud sizes for personalized comfort. Equipped with a 4.4mm balanced connection, these monitors ensure pristine audio fidelity, making them the ultimate choice for critical listening and on-the-go excellence.

Specifications

Controller Type	Media Control Cable
Control Method	Remote
Control Type	Media Control
Compatible Devices	Cellphones, Tablets, Laptops, Desktops
Antenna Location	Recording
Enclosure Material	Magnesium alloy
Water Resistance Level	Not Water Resistant
Is Electric	No
Specific Uses For Product	Music
Carrying Case Material	Silicone
Cable Features	Approx. 3.94 ft, silver-coated OFC strands, ear hanger, L-shaped non-magnetic gold-plated stereo mini plug, Approx. 3.94 ft, silver-coated OFC strands, ear hanger, L-shaped non-magnetic gold-plated balanced standard plug
Additional Features	Sony IER-M9 In-ear monitor headphones
Earpiece Shape	Rounded tip
Headphones Ear Placement	In Ear
Headphone Folding Features	In Ear
Frequency Range	5 Hz - 40 kHz
Impedance	2E+1 Ohm
Noise Control	Passive Noise Cancellation
Audio Driver Type	Balanced Armature Driver
Connectivity Technology	Wired
Headphone Jack	3.5 mm Jack
Carrying Case Color	Black
Color	Black
Style Name	Modern
Theme	Music Production
Item Weight	1 Pounds
Unit Count	1.0 Count

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