signal multiplier... how to... what to use...

I would like to know how to take the signal out of my preamp and multiply / split it into several signals so that I can send that signal to multiple amps to power other rooms in the house...

Please advise..
Do you have multi room capabilities with your pre? Do you have other amps with volume controls? Will you need a way to control the volume in the other rooms (in wall volume control or tabletop volume controls)? Or, are you happy controlling it all from your pre?
You really only need 1 amp for the whole house with a speaker selector and some sort of volume. It gets quite complicated from there...start reading a lot.
Check out and or for a cheaper route