Key benefits Karaoke without a separate power amplifier: enjoy microphone karaoke directly and conveniently. Flexible music playback: insert a USB drive (plug and play) up to 64GB and play WAV, WMA, APE, and FLAC formats. Simple digital to analog conversion: converter mode supports coaxial, RCA L/R, and 3.5mm aux interfaces to convert digital audio to analog, enabling non Bluetooth devices to output audio. Wireless enhancement for wired devices: Bluetooth receiver mode lets you connect wired audio devices to a mobile phone or tablet, turning them wireless. Features and capabilities Karaoke mic support: you can enjoy microphone karaoke even if there is no power amplifier. U disk play: plug and play, support max 64GB U disk, and WAV/WMA/APE/FLAC music formats. Converter mode: with coaxial, R/L, 3.5mm aux interface, realises digital signal to analog; equipment without Bluetooth can realise audio convert. Bluetooth receiver mode: connect wired audio devices from a mobile phone or tablet, making the wired devices wireless. Compatibility and interfaces USB playback: supports up to 64GB USB drives. Audio formats: WAV, WMA, APE, FLAC. Output/input interfaces for converter mode: coaxial, RCA L/R, 3.5mm auxiliary. Bluetooth: enables wireless connection from mobile devices to wired audio gear. Use scenarios Home karaoke sessions: connect a microphone and use the unit to amplify and mix audio without needing a separate power amp. USBbacked music playback: load a USB drive with quality audio files and play them directly without a computer or streaming device. Upgrading legacy gear: use converter mode to connect non Bluetooth equipment to modern playback chains via analog outputs. Wireless streaming for wired setups: pair with a smartphone or tablet to make traditional wired speakers or receivers act as Bluetoothenabled devices. Why this product Allinone audio solution with multiple modes (karaoke, USB playback, digitaltoanalog conversion, and Bluetooth reception) to cover home entertainment, casual performances, and older audio setups. Straightforward plugandplay operation and compatibility with common audio formats and interfaces. Reliable performance for converting digital audio to analog signals and for enabling wireless access to wired audio gear.