Sennheiser IE 800 Audiophile Ear Canal Headphones[Product Information]- Dynamic linear-phase 7mm transducer delivers extremely wide frequency response (8-41，000 Hz (-3 dB)， 5-46，500 Hz (-10 dB))
- The precision ceramic housing features attenuated dual-chamber absorber (D2CA) to deliver extremely low harmonic distortion even at high output levels (< 0.06% (1 kHz， 94 dB)).
- 16-ohm impedance compliments portable audio devices.
- Ergonomic， oval-shaped ear adaptors for maximum comfort.
- 1.1 m symmetrical， oxygen-free (OFC) copper cable.
