How many different amps are you trying to run the same signal to? It would work technically, but you would be asking for trouble doing it because you would have to shield the distro blocks to avoid noise.
So don't make your own. You can find a line driver or splitter that can do what ur trying to accomplish.
"WHEN you're thinking of replacing a blown fuse with a higher rated fuse ask yourself if you know more than the engineer who designed the equipment."