Audio-Technica ATH-DSR9BT Wireless Over-Ear Headphones with Pure Digital Drive


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Wireless Over-Ear Headphones with Pure Digital Drive

The ATH-DSR9BT over-ear wireless headphones employ
Audio-Technica’s new Pure Digital Drive system, which allows the headphones to
operate without a sound-degrading D/A converter that conventional wireless
headphones rely upon. Instead, the ATH-DSR9BT utilizes Trigence Semiconductor’s
Dnote chipset to receive the digital audio signal from a Bluetooth wireless
transmission, process and transfer it to the driver 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 a
re-engineered 45 mm True Motion Driver, which features a lightweight diaphragm
with DLC (diamond-like carbon) coating for superlative fidelity and extended 5
Hz – 45,000 Hz frequency response. The driver’s 4-core twisted OFC-7N voice
coil provides precise control of the diaphragm displacement, and an acoustic
resistor controls the airflow in front of and behind the diaphragm to ensure
smooth, natural audio reproduction across the entire frequency range. 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-DSR9BT to
overcome the sonic limitations of conventional Bluetooth wireless transmissions
by supporting the 24-bit/48kHz Qualcomm® aptX™ HD audio 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
(6.6′) USB cable.

The ATH-DSR9BT 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

  • Exclusive
    Pure Digital Drive system keeps audio signal completely digital from
    source to driver for exceptionally pure sound
  • Dnote
    chipset controls driver amplitude directly with digital signals – no D/A
    converter required
  • Compatible
    with Qualcomm aptX HD audio, aptX, AAC and SBC codecs, enabling wireless
    transmission with a resolution up to 24-bit/48kHz
  • Exclusive
    45 mm True Motion Driver, featuring 4-core twisted OFC-7N voice coil and
    diaphragm with DLC (diamond-like carbon) coating, extremely accurate audio
    reproduction with extended high frequencies
  • Housing’s
    dual-layer isolation structure keeps the electric circuitry separate from
    the acoustic space for optimal phase and transient response
  • Acoustic
    resistor controls airflow inside the diaphragm housing, yielding more
    natural sound
  • Mic
    and volume/control switch are built into the earcup for convenient control
    of smartphones and other Bluetooth wireless devices
  • NFC
    (Near Field Communication) functionality enables touch pairing with
    NFC-compatible Bluetooth wireless technology devices
  • Remembers
    the last eight Bluetooth wireless devices paired
  • LED
    indicators in the earcup display pairing and charging status, battery
    level, and the codec currently in use
  • Heat-reactive
    soft foam earpads and an easily adjustable leather headband provide a
    comfortable fit with outstanding sound isolation
  • Internal
    battery provides approximately 15 hours of continuous use (1000 hours on
    standby) on a full charge
  • Includes
    a 2.0 m (6.6′) USB cable, for charging and Hi-Res Audio playback. and hard
    carrying case




45 mm




5 –
45,000 Hz




38 ohms


Battery: 3.7V rechargeable lithium polymer battery


15 hours continuous use (1000 hours standby)
Charging Time: Approx. 5 hours (for 0-100% charge)
Depending on environmental conditions


310 g
(10.9 oz), without cable


2.0 m
(6.6′) USB charging cable, hard carrying case




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

Response (Microphone)

50 –
4,000 Hz

Pattern (Microphone)


Input Jack: Micro USB Type B
Communication System: Bluetooth Version 4.2
Output: Bluetooth Specification Power Class 2
Maximum Communication Range: Line of sight – approx. 10 m (33′)
Compatible Bluetooth Profiles: A2DP, AVRCP, HFP, HSP
Support Codec: aptX HD, aptX, AAC, SBC

Additional information

Weight 0.00000000 lbs


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