Sennheiser IE-900 In-Ear Headphones - $700 (burlingame)

Portable Hi-Fi Audio X3R technology: TrueResponse transducer for balanced sound Helmholtz resonator chambers for audio detail Anodized aluminum housing 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 Sennheiser carry case Frequency response: 5 Hz - 48,000 Hz THD: 0.
05% (1 kHz, 94 dB) Impedance: 16 ohms Designed and made in Germany Original box