Amp Stands - Can someone tell me their purpose and what I have to gain from them?

[Woody Sound]

It helps dispersion and the bass response. Putting it on chairs is just as bad for dispersion and you loose a lot of depth... I like the Mambo wedge system and I am putting something like this on my Dr Z Cab (scroll down, kickstand)

http://www.fortemusical.com/tolexgrillclothoptions.html

As long as you are ok with routing out or cutting out the hole to fit it into.