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Audio Technica ATH-DSR7BT Wireless over-ear Headphones

Audio-Technica

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The ATH-DSR7BT over-ear wireless headphones gift your ears with Digital Sound Reality. These innovative headphones feature Audio-Technica’s new Pure Digital Drive™ system, allowing them to operate without the sound-degrading D/A converter found in conventional wireless headphones. By utilizing Trigence Semiconductor’s Dnote chipset, the ATH-DSR7BT headphones are capable of receiving a Bluetooth wireless transmission, processing the digital audio signal and transferring it to the drivers where the digital pulses of the chipset move the voice coil and diaphragm forward and backward to create the sound waves heard by the listener.

The Pure Digital Drive system likewise depends on re-engineered 45 mm True Motion Drivers, which feature specially designed diaphragms and lightweight, bobbin-wound voice coils to deliver incredibly nuanced, high-resolution sound reproduction. A pair of acoustic resistors controls the airflow in front of and behind the diaphragm to ensure a natural, balanced sound, and the entire driver assembly is housed within a layered aluminum structure that minimizes unwanted resonance and isolates the electric circuitry from the housing’s acoustic space, resulting in optimal phase and transient response.

The Pure Digital Drive system also enables the ATH-DSR7BT to overcome the sonic limitations of conventional Bluetooth wireless transmissions by supporting the 24-bit/48kHz Qualcomm® aptX™ HD codec. (aptX, AAC and SBC codecs are also supported.) The headphones can reproduce Hi-Res Audio when connected to a computer or other digital playback device via the included 2.0 m USB cable.

The ATH-DSR7BT is equipped with a microphone, volume control and simple tap control for answering/ending calls and playing/pausing music on a smartphone or other device. Three LED indicators allow you to easily monitor pairing and charging status, battery level, and the codec currently in use. The headphones’ internal lithium polymer battery provides approximately 15 hours of continuous use (up to 1000 hours in standby mode) and can be recharged using the included USB cable.

About High-Resolution Audio – In Brief: The Move to Hi-Res Audio

While many listeners may believe that high-resolution audio came along with the introduction of the Compact Disc in 1982, constraints on the disc’s storage space always prevented CD audio (standardized at 44.1 kHz/16-bit) from fully and completely reproducing the original recorded sound. The advent and subsequent popularity of MP3s only made this problem more pronounced – the necessary compression of these files causes audio information to be lost, thus greatly reducing the audio quality. But with lossless audio file formats, faster Internet speeds, and storage space increasingly easy to come by (and in ever-smaller packages), the push is on to create audio equipment capable of capturing and reproducing true Hi-Res Audio, generally considered to be 96 kHz/24-bit or better. The Hi-Res Audio logo certifies that a product meets the Hi-Res Audio standards. Per these standards, headphones must have transducer frequency performance to at least 40 kHz. As a producer of these types of audiophile headphones since 1972, Audio-Technica is well-positioned to provide audio solutions that meet the demands of Hi-Res Audio media formats, allowing for the full reproduction of their extended sonic characteristics.

Type

Dynamic

Driver Diameter

45 mm

Frequency Response

5 – 40,000 Hz

Sensitivity

100 dB/mW

Impedance

35 ohms

Battery

3.7V rechargeable lithium polymer battery

Battery Life

Approx. 15 hours continuous use (1,000 hours standby)
Charging Time: Approx. 4 hours (for 0-100% charge)
Depending on environmental conditions

Weight

300 g without cable

Input jack

Micro USB Type B

Accessories

2.0 m USB charging cable, carrying pouch

Microphone
Type

Condenser

Sensitivity

-44 dB (1V/Pa a 1 kHz)

Frequency Response

50 – 4,000 Hz

Polar Pattern

Omnidirectional

Bluetooth
Communication System

Bluetooth Version 4.2

Output

Bluetooth Specification Power Class 2

Maximum Communication Range

Line of sight – approx. 10 m

Compatible Bluetooth Profiles

A2DP, AVRCP, HFP, HSP

Support Codec

aptX HD, aptX, AAC, SBC



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