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 chip set to receive the digital audio signal from a Bluetooth wireless transmission, process and transfer it to the driver where the digital pulses of the chip set move the voice coil and diaphragm forward and backward to create the sound waves heard by the listener.
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.
- Type: Dynamic
- Driver Diameter: 45 mm
- Voice Coil: OFC-7N
- Frequency Response: 5 – 45,000 Hz
- Sensitivity: 97 dB/mW
- Impedance: 38 ohms
- Battery: Internal Battery: 3.7V rechargeable lithium polymer battery
- Battery Life: Approx. 15 hours continuous use (1000 hours standby)
- Charging Time: Approx. 5 hours (for 0-100% charge)
- Weight: 310 g