Very good as everyone is doing, the theme is the following, I found some integrated audio of those used by car players and I came up with the idea of using them to assemble as a kind of home theater (or whatever that wea is called in their countries: v) to listen to music and movies with my computer, the integrated ones are the TDA8560Q of 40w 2 channels and the TDA7294 100w 1 channel, I am not professional or anything but I have knowledge in basic electronic level (: 'v) and I have 2 questions I hope you can help me. First, you can join 2 integrated audio to power a 250w subwoofer (for that I will use the TDA7294 that has a 100w output). The second is that after having everything armed I can join the boards to a single audio output of the computer, I mean, it will not affect the output power that will happen to the integrated audio already assembled? Thank you in advance for taking the time to read my query.