watt

Hi, I am kinda new to this stuff but I have 16mA 3.3V AC output wich is 0.0528 watts but I need to get it to 50nW (0.05 microwatts) I tried finding something butndont really know so how do I do it?

Hello i am thinking of making a Bluetooth sound bar out of my old laptop lenovo laptop ( ideapad 510) internal speakers, from the internet i learnt that you need to change the digital signal to analog and then amplify the signal before connecting it to the speaker. I am a little worried about...