Lifting the Ground

Somebody please explain to me again the rules about using cheater plugs on audio componenets. I have my turntable, CD player, and preamp all going into a TICE power conditioner. Is it recommended that I use a cheater plug on any or all of the three units? I have my solid state amp going into a second wall outlet. Is it recommended that I also use a cheater plug on the amp? And what about the risks. I don't want to come back from work and find my house burned down.