1. Plug-and-Play Bluetooth o Receiver: Multiple interface options—3.5mm AUX, coaxial, and optical fiber—enable easy Bluetooth connectivity for legacy o devices. 2. Supports Bluetooth o receiving mode with 3.5mm AUX, coaxial, or optical fiber o output. Features multi-device expansion capability for flexible setup. 3. Connects to older speakers or power amplifiers via 3.5mm AUX, coaxial, or optical fiber inputs. Enables Bluetooth o playback on non-Bluetooth o equipment. Compatible with a wide range of legacy amplifiers and o systems. Delivers strong, stable signal transmission with low latency and high-fidelity APTX-HD decoding for CD-grade sound quality. 4. APTX-HD decoding technology delivers high-resolution, low-latency o performance with accurate o data restoration. Provides a wireless listening experience comparable to wired connections. 5. Equipped with Qualcomm Bluetooth 5.2 chipset for stable, long-range (up to 15 meters) wireless transmission. Supports o codecs including APTX, APTX-HD, SBC, and AAC. Note: This is a Bluetooth o receiver only—not a transmitter. It is designed exclusively for o playback and is not compatible with keyboards, mice, or file transfer devices. Product Name: APTX-HD Bluetooth o Receiver Model: D300-HD Bluetooth Version: Bluetooth 5.2 (Qualcomm CSR) Interfaces: 3.5mm AUX, coaxial, optical fiber (single-output only; simultaneous output across all three interfaces is not supported) Transmission Range: Up to 15 meters Charging Port: USB-C Battery Capacity: 500 mAh Operating Time: Up to 10 hours Frequency Range: 2400–2483.5 MHz Frequency Response: 20 Hz – 20 kHz Compatible Devices: Wired speakers, home speakers, power amplifiers, headphones, car o kits, etc. Type: Bluetooth Receiver