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Features: Audiophile Sound - Exceptional detail, full fidelity & deep bass impact for life-like performance.
Active Noise Canceling - Battery-assisted true active noise canceling eliminates the distractions of the outside world (battery included).
Push-To-Hear Ambient Control - Mutes the audio and amplifies outside sounds so you can hear those around you without removing the headphones.
Ultra Fidelity Dynamic Balance Transducers - Polk's proprietary driver technology guarantees full frequency response while minimizing distortion.
Passive Isolation Technology - Comfortable, in-ear-canal design seals the ear minimizing outside distractions.
Easily Accessible In-Line Controller - Handy access to the push-to-hear switch, the 10dB attenuator and on/off.