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ATH-DSR9BT Wireless Over-Ear Headphones with Pure Digital Drive Pure Digital Drive™ system 45mm True Motion D/A Drivers Luxury memory-foam earpads and headband High-resolution compatible with USB connection Bluetooth and NFC compatible Supports aptX HD, aptX, AAC and SBC codecs ATH-DSR9BT No wires, No loss Wireless music has never sounded so pure. The first headphone to employ the Pure Digital Drive™ system, Audio-Technica’s DSR9BT delivers the original digital signal from source to driver without the need for D/A conversion that typically degrades sound quality, allowing you to hear details never experienced in the wireless realm. Pure Digital Drive™ system delivers the original digital signal from source to driver for you to hear the full digital transmission Features new 45mm True Motion D/A drivers, developed exclusively for the DSR9BT, incorporating a unique four-core voice coil for precise diaphragm control and extraordinary audio clarity Luxury memory-foam creates a personalised fit and evenly disperses headphone weight across the head allowing you to listen for longer High-Resolution audio compatible with USB connection (up to 96kHz/24-bit) Bluetooth 4.2 supports aptX HD, aptX, AAC and SBC codecs Touch control and volume switch for managing music playback and calls LED indicators display pairing and charging status, battery life and codec in use Includes 2.0m USB connection cable and hard storage case Pure Digital Drive™ Wireless digital audio signals are transmitted via Bluetooth® technology direct to the headphone driver. Unlike conventional wireless headphones, the signal remains fully in the digital domain from source without the need for Digital-to-Analog conversion and typical sound degradation. True Motion D/A Drivers Developed exclusively for the DSR9BT, 45mm True Motion D/A drivers combine a high-purity, 7N-OFC four-core voice coil that transmits the original digital signal for audio accuracy with a Diamond-Like Carbon (DLC) coated diaphragm for increased rigidity and enhanced frequency response. High-Resolution Audio Reproduces High-Resolution digital sources up to 24-bit/96kHz via wired USB connection and up to 24-bit/48kHz wirelessly. AptX HD Compatible Bluetooth 4.2 supports aptX HD, aptX, AAC and SBC codecs. Crafted for Comfort Luxury memory-foam creates a personalised fit and evenly disperses headphone weight across the head allowing you to listen for longer. See the Light LED indicators display pairing and charging status, battery life and codec in use. Touch to Play Touch control and volume switch for managing music playback and calls. Customise your Fit High-quality aluminium sliders offer improved wearing stability and headband adjustment. Included Accessories Includes exclusive hard storage case and 2.0m USB cable for wired connection and charging. Headphones 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) Depending on environmental conditions Weight 310g without cable Connector Micro USB Type B Accessories Included 2.0m USB charging cable, hard carrying case Microphone Element Condenser Polar Pattern Omnidirectional Frequency Response 50 – 4,000 Hz Open Circuit Sensitivity -44 dB (1V/Pa a 1 kHz) Bluetooth® Bluetooth® Version Bluetooth Version 4.2 Output Bluetooth Specification Power Class 2 Operating Range Line of sight - approx. 10m Compatible Bluetooth® Profiles A2DP, AVRCP, HFP, HSP Support Codec aptX HD, aptX, AAC, SBC