1、Professionally Designed: Bluetooth 5.1 Receiver is designed for home or professional sound switching. Converts SPDIF for Toslink digital sound signals to 2RCA L R and 3.5mm AUX analog sound. 2、Wireless Playback: Digital to analog sound converter connects to 3.5mm sound or RAC sound interfaces, so you can play wirelessly without replacing the entire set of sound equipment. 3、Bluetooth Sound Reception Function: Digital to analog sound converter can be paired with wired speakers, car systems, wired headphones, amplifiers using mobile phones via Bluetooth. 4、Rich Interface: BT digital to analog sound converter has built‑in digital signal to analog chip, which supports the connection of various interface devices. 5、Stable Signal Transmission: Bluetooth Receiver adopts Bluetooth 5.1 smart technology, compatible with multi cotransmission, faster and more stable. Provides transmission without electromagnetic noise.