BLUETOOTH RECEIVER FOR HOME STEREO: Bluetooth adapter for stereo receiver stream music from smartphones/tablets/laptops to your home stereo/vintage speaker/car stereo system, and give you great sound. Bring your old stereo system into the future with a Bluetooth wireless audio adapter. MULTIFUNCTIONAL INTERFACE: Bluetooth receiver for speakers supports RCA / 3.5mm jack / digital optical outputs, and also supports a USB drive to play music. Which is compatible with 99% of speakers, old AV receivers, car stereos, and home stereos. You can enjoy the music atmosphere anytime and anywhere.