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 IER-M9 — where precision meets luxury.

COMPLETE PRO KIT - Includes hybrid silicon earbuds, cable clips, cleaning cloth, and a stylish carry case—everything a true audiophile needs.
TAILORED COMFORT FIT - Pre-molded ear hangers and multiple earbud sizes ensure a secure, personalized fit for immersive listening.
SEAMLESS CONNECTIVITY - Equipped with a premium 4.4mm balanced cable and gold-plated connectors for pristine signal transfer.
LIGHTWEIGHT DURABILITY - Crafted with a magnesium alloy housing for a robust yet featherlight fit that lasts all day.
PRECISION AUDIO MASTERY - Experience crystal-clear sound with Sony’s proprietary 5 balanced armature drivers delivering every nuance flawlessly.

The Sony IER-M9 is a cutting-edge in-ear monitor featuring five proprietary balanced armature drivers and a magnesium alloy diaphragm for exceptional sound clarity and durability. Designed for professionals and audiophiles, it offers a secure fit with pre-molded ear hangers and multiple earbud sizes. The detachable 4.4mm balanced cable with gold-plated connectors ensures superior audio transmission. This premium wired earphone set includes a full accessory kit, making it the ultimate choice for immersive, high-fidelity listening.

Specifications

Noise Control	Passive Noise Cancellation
Headphones Jack	3.5mmジャック
Model Name	IER-M9
Connectivity Technology	有線
Included Components	ヘッドホン。
Age Range (Description)	大人
Material	プラスチック
Compatible Devices	携帯電話、タブレット、ノートパソコン、デスクトップ。
Theme	ビデオゲーム
Control Type	メディアコントロール
Cable Feature	脱着式
Item Weight	454 g
Water Resistance Level	Not Water Resistant
Frequency Range	5Hz~40kHz。
Unit Count	1.0 Count
Item model number	IERM9
Is Discontinued By Manufacturer	No
Color Name	シルバー
Connector	ケーブル
Material Type	プラスチック
Voltage	240 Volts

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