CD Grade High-definition Lossless Playback: The original sound presents zero delay when listening to music, HIFI high-definition decoding output, no stuttering or delay, clear sound quality, and restores sound details like a live music scene. Rotate the knob of the Bluetooth receiver adapter to adjust the volume, and then press the button to adjust the music track. Readable screen display mode and volume.Diverse Interfaces, Strong Compatibility: Bluetooth receiver adapter supports optical/RCA/3.5mm/AUX audio output, meeting the needs of a variety of devices with multiple audio interfaces. In addition, it also supports playing music on a USB drive. Compatible with almost all speakersBluetooth 5.3 Receiver: Breathe new life into your aging stereo receivers with our Bluetooth adapter for stereo receivers featuring the latest Bluetooth 5.3 tech. It offers super-fast reception, ensuring smooth, lag-free playback.Strong & Barrier-Free Transmission: The sound quality has a delay-free transmission distance of up to 33 feet (note: barrier-free), stable transmission, and no dead corners in room connections. Allowing you to move freely at home without losing connectivity.Plug & Play, No Driver Required: allows you to stream music directly from your phone, tablet, or laptop to a home stereo, old speakers, car stereo, or projector, connect a Type-C power cord, turn on the power, and then pair it with a Bluetooth audio device to play music.