The ATH-ANC25 QuietPoint® Noise-Cancelling On-Ear Headphones block up to 80% of environmental noise and offer outstanding sound quality, comfort and portability. The headphones feature soft ear pads and a cushioned headband for long-wearing comfort. The detachable cord offers a convenient in-line volume control. Unlike many other noise-cancelling headphones, the ATH-ANC25 audio functions even without batteries or when its noise-cancelling function is turned off. The headphones are compatible with the Apple® iPod®, iPhone™ and iPod touch®, and perfect for use with portable music and DVD players, laptop computers, in-flight entertainment systems and other devices. The ATH-ANC25 folds for easy portability and storage.

Details on Noise Cancellation
Audio-Technica's QuietPoint® headphones use active noise-cancelling technology to reduce distracting background noise, providing an exceptionally comfortable and restful listening environment in areas with high ambient noise. Active noise-cancelling headphones have components not present in ordinary headphones:

Microphone – Noise-cancelling headphones feature a miniature microphone in the earpiece that picks up ambient noise (such as traffic, air-handling systems, etc.)

Noise-canceling circuitry – Electronics in the ear piece create a noise-cancelling wave that is 180° out of phase with the ambient noise. This wave acts like a noise eraser: it cancels out the annoying sounds that surround you without diminishing the audio you want to hear. The result…a peaceful enclave to enjoy the music or movies of your choice.

Battery – The noise-cancelling electronics are battery-powered.

Passive noise-reduction
Passive noise-reducing headphones and earphones do not offer active noise-cancelling electronics. Instead, closed-back sealed headphones, such as the ATH-M50, achieve passive noise-reduction by physically covering the ears to help block out external noises.

Passive noise-reducing earphones, such as ATH-CK9, offer an in-ear design that forms an acoustic seal that helps to block background noise and allow for increased fidelity at lower volume levels.

Features:

Reduces environmental noise up to 80%

Clear, high-fidelity audio

Compact folding design with soft ear pads

Audio works even after battery depletes

Detachable cable with in-line volume control

Also includes travel pouch, airline adapter and AAA battery

Technical Data:

TYPE Active noise-cancelling

DRIVER DIAMETER 40 mm

FREQUENCY RESPONSE 20 – 20,000 Hz

QUIETPOINT® ACTIVE NOISE REDUCTION Up to 15 dB

MAXIMUM INPUT POWER 100 mW

SENSITIVITY 100 dB

IMPEDANCE 20 ohms

BATTERY AAA (alkaline)

BATTERY LIFE Up to 40 hours, typical (alkaline)

WEIGHT 104 g (3.7 oz), without cable and battery

CABLE Detachable 1.2 m (3.9') with 3.5 mm (1/8") stereo mini-plug and integrated volume control

CONNECTOR 3.5 mm (1/8")

ACCESSORIES INCLUDED Airline adapter; AAA battery; protective pouch