Welcome to the world of high-end sound! I am selling 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 effect on sound quality or operation ⸻ ✅ Accessories ・Original 2.5mm balanced cable ・Original 3.5mm unbalanced cable ・Original 4.4mm balanced cable ※No other accessories are included. ⸻ ✅ 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 016.6Ω / R 016.6Ω → No abnormalities ⸻ ⚠️ Notes ・Please refrain from purchasing if you are sensitive to used items ・Price negotiation is possible (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!