Ak55 Bluetooth 5.0 2.0 Channel 450W Power Stereo Amplifier Receiver For Home Power Amplifier Home Audio: Rated power 70W + 70W for impedance 4-8 inch 4-16? passive speakers.Audio AMP has roaring bass, crisp highs, and excellent fullness great for home theater, karaoke, and acoustic sound systems.Home AMP is suitable for small apartments, bedrooms, offices, basements and garages Multiple Input Modes: The audio amplifier supports multiple external signal sources: connect to music streaming devices such as computers/mobile phones/laptops via Bluetooth, OPT/COA input, RCA and MIC input. It also supports USB port, AUX port. You can enjoy music as you like Microphone Function: The stereo amplifier with 2 microphone input jack, you can sing karaoke at home with your family or friends. The power amplifier comes with treble and bass ,Echo,Delay function Easy to Operate: The home theater audio amplifier comes with a remote control that allows you to change audio settings from a distance, and a bright digital LED display makes it easy to view the changed settings Wide Application: The AK55 stereo receivers amplifier compatible with mobile phones, computers, tablets, notebooks, TVs and projectors with AV audio etc. Recommend for home TV audio, computer audio system-game, tower Speaker, garden speaker