Multi interface Bluetooth audio receiver with AUX, digital optical, and USB drive playback Key features Interfaces for wide compatibility: AUX 3.5 mm, digital optical, and USB drive playback to meet the needs of different devices and audio interfaces Adds Bluetooth to non Bluetooth speakers or amplifiers: solve the problem of speakers or amplifiers without Bluetooth, enabling wireless playback Bluetooth 5.3 performance: upgraded performance Bluetooth 5.3 chip delivers low loss data transmission, fast response, and stronger anti interference Plug and play USB playback: supports USB drives for local music playback, no driver required Product highlights Function: provides wireless Bluetooth streaming while offering multiple wired input options for flexible connection Compatibility: works with a variety of devices and audio interfaces, including old speakers and amplifiers that lack Bluetooth Performance: Bluetooth 5.3 offers reduced latency and reliable connection with improved interference resistance Convenience: USB drive playback is plug and play, allowing direct music access without software What you get and how it works AUX input: connect to any device with a 3.5 mm headphone or line out to stream audio via Bluetooth or use the wired path Digital optical input: connect to devices with optical output such as TVs or AV receivers for digital audio USB drive playback: insert a USB disk to play stored music directly through connected speakers or amplifiers No driver required: plug in and pair with Bluetooth devices for immediate use 23 practical use scenarios Upgrading an old stereo system: connect the receiver to your old amplifier via AUX or digital optical, then stream music from a smartphone or tablet over Bluetooth without replacing your speakers TV or home theater streaming: use the digital optical or AUX input to send TV audio to a Bluetoothenabled speaker system, reducing latency and maintaining audio quality Local music playback: insert a USB drive with your music library, plug into the receiver, and play directly through your speakers without needing a computer Design note Finishing and appearance include a red and white Lotus design, reflecting the product styling while maintaining a professional and unobtrusive presence in your setup