Bluetooth receiver mode Connect wired audio devices to your mobile phone or tablet, turning the wired setup into a wireless one. Benefit: enables convenient streaming from your device to non wireless speakers or amps. Converter mode Interfaces include coaxial, RCA L/R, and 3.5 mm auxiliary. Performs digital to analog conversion so equipment without Bluetooth can receive audio from BT enabled sources. Benefit: expands compatibility with older or non Bluetooth systems. USB drive playback Plug and play with USB drives up to 64 GB. Supports WAV, WMA, APE, and FLAC music formats. Benefit: local music playback without a separate player or computer. Karaoke microphone support Supports karaoke microphone use. You can enjoy microphone karaoke even if you do not have a power amplifier. Benefit: simple, stand alone karaoke capability with existing speakers. Use scenarios Home entertainment upgrade: pair with a phone or tablet via Bluetooth to stream music to a wired home stereo system, expanding your existing setup without replacing speakers. Non Bluetooth equipment enhancement: use the converter mode to connect older amplifiers or speakers to modern Bluetooth sources, enabling wireless audio without upgrading your entire system. USB music and karaoke sessions: connect a USB drive containing your WAV/WMA/APE/FLAC files for playback, and use the karaoke mic feature to sing with your current speakers, without needing an external power amplifier.