Built-in transformer - Built-in transformer and US plug, the 2 channel Bluetooth 5.0 stereo amplifier receiver provides 300W x 2 P.M.P.O(Peak Music Power Output), which is is perfect for your karaoke and home theater acoustic sound system. 6 Inputs & Amplifer Dimension - The digital amp box supports USB/SD card/FM Radio/ Bluetooth/2 1/4 inches microphone IN and various external sources RCA(R,L) audio input for tuner, CD player, tape deck and so on. Amplifier size: 7x5.4x2' / 18x13.8x5.5cm, weight: 2.4pounds/1.1kg. USB 2.0/SD card input - The sound amplifying mixer device features a USB/SD card input to support flash drives or SD card. Allows you to play your favorite audio files from your computer's media library when you connect it directly to the amp. Multipurpose - Recommend for home TV audio, computer audio system-game, tower Speaker, garden speaker. Small simple compact design also for car audio system. 1-year Warranty - We offer 1-year guarantee period. If you ha