美國 Polk Audio – UltraFocus 8000 主動抗噪頭戴式耳機

The UltraFocus 8000 produces a truly amazing sound as easily on an airline or busy city street, as it will at home in front of your stereo system. In fact, thanks to SecureFit™ support, generously cushioned ear pads and Active Noise Canceling technology, you’ll hear your music with extraordinary clarity and detail, without distortion even in locations with high levels of ambient noise.

Polk’s patented Dynamic Balance^® driver technology, in combination with active noise canceling and passive noise isolation, produces an audiophile-grade listening experience.

key features

• Audiophile sound, stunning detail, full fidelity and deep bass to maximize performance.
• Active Noise Canceling—Battery-assisted true active noise canceling eliminates the distractions of the outside world (batteries included).
• Push-To-Hear Ambient Control—Mutes the audio and amplifies outside sounds so you can hear without removing the headphones.
• Passive Isolation Technology— Comfortable, in-ear-canal design seals the ear minimizing outside distractions.
• Ultra Fidelity Dynamic Balance Transducers—Polk’s proprietary driver technology guarantees full frequency response while minimizing distortion.
• 3 Button Remote Control & Microphone-Use your iPhone and iPod on the fly with in-line controls.

Technology

Active Noise Canceling Technology with Optimized Active Tuning
Battery-assisted Active Noise Canceling technology eliminates the distractions of the outside world, and Polk’s exclusive optimized active tuning takes advantage of ANC technology to improve the overall performance dynamics.

Passive Isolation Technology
The on-ear design surrounds each ear; both designs naturally minimize outside distractions.

Dynamic Balance Design Technology
This true transparency reveals a wide dynamic range, with sharp details, and no hint of strain.

Active Dynamic Balance Polymer Drivers
Drivers just like those used in full-sized loudspeaker, only a lot smaller. Discrete crossover filters added to each UltraFocus driver system naturalize high frequencies for more lifelike sound.

Ultra-Flexible Tangle-free Planar Audio Cable
Round cables, always coiling up and twisting, are a constant source of annoyance. Repetitive twisting can result in broken cables that flop out of their connection. Oxygen-free cable technology enhances audio conductivity for stellar sound quality.

Gold-plated 3.5 mm Connector
Designed to fit through the opening on all i-gadget cases.

Extra-long battery life
40 to 60 hours with normal ANC usage. Easy to see blinking low battery indicator. (Two AAA batteries included.)

Convenient 3-Button On-Ear Controller
3-button on-ear control & microphone lets you use your iPhone, iPod (and iPad) on the fly. Change tracks, volume, initiate play/pause or take a call (iPhone) without touching your player.

In the box

• Headphones
• Protective case
• 55″ cable (139.7 cm)
• 1/8″ to 1/4″ adaptor
• Skype^® adaptor
• Airline adaptor
• External attenuator
• Shirt clip
• AAA batteries (2)