How, or why does an amp stand improve sound???

I love the Grand Prix shelving and amp stands (especially appearance. The only reason I do not have the amp stands is that I thought the price (especially with apex footers) was too high. Just browsed a past thread that espoused the "extreme" sonic improvement over normal stands.

To add insult to injury--let me inform you that due to lack of space with my fairly elaborate high-end system--I currently have 2 Bryston Monos on top of a nice art pedestal (pedestal is on carpet, balanced and made of the high quality black piano finish material that many speakers are made of) on top of each other with a Sony 400 DVD player on top of the top Bryston mono. I do have a glass plate made for the Sunfire amps with rubber feet between the 2 monos. There is plenty of air circulation, but again, they are simply stacked on top of one another except the Sunfire glass plate between the monos.

So--please feel free to berate me as appropriate. Will getting a couple Grand Prix stands with apex footers really improve my sound along with finding a way to get the monos on the floor as most "normal" audiophiles?

BTW--i have B&W800D's all the way around with 805's as rears / very high-end CD, DAC, all cables, Processor, Sony 5000 Blu Ray, Furman Ref conditioner.