Experience superior audio quality with our Bluetooth Receiver Adapter, designed for audiophiles seeking to upgrade their old audio systems. This adapter features the advanced QCC5125 chip, ensuring high-fidelity sound transmission and robust connectivity. This program does not have LDAC, but it also supports APTX-HD and sound-enhanced DSP (APTX-HD + DSP), which is much better than LDAC alone in terms of comfort, emotional atmosphere, fullness, warmth, mellowness, etc., and (APTX-HD + DSP) compatibility is much better than LDAC. AUX 3.5 and RCA are wired inputs connected in parallel. Bluetooth priority: The wired input automatically disconnects when Bluetooth is connected; the wired input automatically reconnects when Bluetooth is disconnected. Power supply: For best performance, use a brand-name 12V 1A isolated power supply (not included). Upgrade your audio system with our Bluetooth Receiver Adapter and enjoy a premium wireless audio experience that brings your favorite music to life. Bluetooth Name: BT5.1 HiFi Audio Color: Black Material: Metal Package Contents: 1* Bluetooth Receiver Adapter