0) Listening to a stereo at a suburban-hell stereo super store. 1) Moving your speakers out into the the room (free), 2) Raising your speaker cables off of the floor using wood blocks or foam cups, 3) Twining your power cables together and running them down one side of your rack then separating (by 1 inch) and running your interconnects down the other side of the rack. 4) Putting your speakers in a sparsely furnished room (nothing between them). I also recall (back in the old days) that putting four concrete garden blocks on top of each of my old Bose SA1000 box speakers improved their sound noticeably.
Cheap Tweeks
Does anybody have any cheap tweeks to share with us to further our search for "affordable" sonic bliss? I have 3 for you to try that anyone can afford. 1) if your amp sets on the floor, try putting 4 tennis balls under it. you might want to place a piece of half inch plywood under the amp first. 2) If you need to isolate your components better, put a piece of plywood under them and then put the largest size bubble wrap that you can find uner them. These ideas work and are much cheeper than big buck isolation platform. 3)If you use "dynamic" speakers, put a quarter at the top front corners and a dime in the center. It must be the resonence of the change that does the trick. All I know is that it works.