Home Audio Amplifier:Built-in power transfer board, support 90-240V power input and DC 12V/5A power input, plug and play. Rated power 40W+40W, 2.0 channel, match for 4-16 passive speakers. Upgraded function with treble and bass , added microphone jk and microphone VOL key. In addition, as a digital amplifier receiver, the sound quality is better than ordinary analogue amplifiersBluetooth 5.0 Connection: home audio amplifier has a built-in Bluetooth 5.0 chip, supports wireless connection between audio devices and amplifiers, lossless sound quality and easy to use. The bluetooth connection is -, noiseless, easy to pair, and can maintain a stable connection within 30 feet/10 metresHiFi Stereo Amplifier:2.0 channel digital amplifier provides 40Wx2, with powerful audio processing chip, reduce the distortion rate, shielded power inductors, low-noise amplifier, and HiFi stereo sound effect, so that you can experience the immersive effectMulti-Function:The audio amplifier comes with MIC input jk, bass, treble and volume knobs for adjusting sound effects. The remote control allows you to enjoy different music and sounds from your sofa,and which includes 6 different built-in equalisation effects.The audio amplifier has function, that can be set to more than 20 radio stations. Note: The remote control has a plastic tab on the bottom that needs to be removed before useWide Application:This Home Audio Stereo Amplifier is compt in size but powerful in sound. It delivers clear, clean sound, is loud without losing sound quality, and is compt enough to fit easily on a bookshelf or desktop. Also compatible with mobile phones, computers, tablets, notebooks and projectors with AV audio,etc