Build on the advanced TAS5548+TAS5624 amplifier chips. Maximum output power is 150W+150W, which can load 4-ohm speakers and enjoy stereo hi-fi music. Bluetooth with QCC3034 chip, version 5.0, supports ACC SBC APT-X and APT-X LL APTX-HD lossless transmission, low frequency output specially designed for active subwoofer connection, very easy to build 2.1 channel system . OSB input for use as high quality (gaming) PC speaker amplifier! Bluetooth, PC-USB, optical, coaxial, RCA audio inputs, variety of input methods to meet your different needs, fully compatible with most home audio devices such as cell phones, computers, tablets, TVs, MP3, CD players, etc. The 12dB adjustment of treble and bass and the EQ effect provide a more detailed sound. The compact and powerful internal layout delivers more precise sound and clear, pure HiFi sound, while the large LED display and remote control design provide a different kind of enjoyment. 100 % Authentic Please review all pictures for details.