Features
- New benchmark in portable audio 
- Ultimate precision & craftsmanship 
- Made in Germany 
- X3R technology: TrueResponse transducer combined with three Helmholtz resonator chambers and acoustic vortex 
- Precision-milled and anodized aluminum housing 
- Hand-assembled at Sennheiser´s headquarters 
- Gold-plated Fidelity (+) MMCX connectors for improved stability 
- Choice of para-aramid reinforced cables (2.5 mm, 3.5 mm, 4.4 mm) 
- Adjustable ear hooks and choice of ear adapters including memory foam 
- Frequency response: 5 Hz - 48,000 Hz 
- THD: 0.05% (1 kHz, 94 dB) 
- Impedance: 16 ohms 
Technical Data
- Impedance: 16Ω 
- Sound pressure level (SPL): 123 dB (1 kHz, 1 Vrms) 
- THD, total harmonic distortion: <0.05% (94 dB, 1 kHz) 
- Cable length: 125 cm 
- Transducer principle: single dynamic driver, pressure chamber 
- Weigh: t4g 
- Technology: unique X3R technology 
- Housing: One-piece precision-milled aluminum housing 
- Warranty: global 2-year warranty 
- Connector: Fidelity (+) MMCX 
- Ear coupling: Ear canal 
- Frequency response: 5 Hz – 48,000 Hz (-10 dB) 
What's in the box?
- IE 900 in-ear headphones 
- Balanced para-aramid reinforced cable with 2.5mm connector 
- Unbalanced para-aramid reinforced cable with 3.5mm connector 
- Balanced para-aramid reinforced cable with 4.4mm connector 
- 3 pairs of silicone ear adapters (S, M, L) 
- 3 pairs of foam ear adapters (S, M, L) 
- Premium carry case with metal serial no. plate 
- Cable clip, Cleaning tool & Cleaning cloth 
- Presentation box with signed customer certificate & User manuals 
 
                         
         
        