SPECIFICATIONS 1>>>The Latest Bluetooth 5.1 Version Compatible to version 5.0 specifications, backwards compatible to Bluetooth 5.0/4.2/4.1/4.0/3.0/2.0/1.0 2>>> Supports Qualcomm aptX HD High-resolution audio your ears deserve. Qualcomm aptX HD was designed to answer the growing demand for high-resolution audio. This enhanced codec supports 24-bit music quality over Bluetooth. This means listeners can hear even the smallest details in their music and videos. 4>>>Universal Compatibility This Bluetooth 5.1 Receiver can be connected to any AV receivers and any powered speakers with standard 3.5mm jack or 2RCA ports, ideally compatible for home theatre systems, stereo systems, and car stereos, also suitable for iPhone, iPad, iPod Touch, Smart phones, and Android devices. 5>>>Stream Music on 2 Speakers Simultaneously With both 3.5mm and 2RCA connection options, you can enjoy music wirelessly on 2 speakers simultaneously. 6>>>Long-Range Wireless Connection The wireless Bluetooth adapter supports a connection up to 10 meters/33 feet, controlling the music played at a long distance. **Bluetooth 5.1 Audio Receiver** Bring your old HiFi into the modern world.