Welcome to the world of high-end sound! I am offering the Sennheiser flagship IEM IE900. With its high resolution and natural sound, you can enjoy music as it is. ⸻ ✅ Condition ・Operation confirmed (no problems) ・MMCX terminals, cables, and housings are all in good condition ・No nozzle clogging ・Stored in a non-smoking, pet-free environment ・Appearance: No noticeable scratches or stains (please forgive minor scratches due to home storage) ・No impact on sound quality or operation ⸻ ✅ Accessories ・Original 2.5mm balanced cable ・Original 3.5mm unbalanced cable ・Original 4.4mm balanced cable ・Dedicated case (storage case) ・Cleaning cloth ・Installed ear tips (used) ※There are no other accessories. ⸻ ✅ Operation check details ・Auditioned with iPhone 12 Pro / FiiO M11 ・Sound output is normal on both left and right sides ・20Hz〜20kHz No distortion, no noise, normal phase ・No disconnection or poor contact during cable operation ・DC resistance: L 16.6Ω / R 16.6Ω → No abnormalities ⸻ ⚠️ Notes ・Please refrain from purchasing if you are sensitive to used items ・Negotiable price (significant discounts are not possible) ・Ships within 24 hours of payment confirmation ⸻ Recommended for those looking for high-quality earphones. Instant purchase welcome - first come, first served!