joema makes some good points.

1) Positioning makes a huge difference. Toeing in my M22's changes the sound drastically.

2) Source material is an often forgotten factor. There's no substitute for fantastically recorded material. Bad material may sound awesone on a so-so system, but on a good system, it'll sound horrible. On a good system, you'll be able to really appreciate great recordings. For me in particular, I've found that because of poor recordings, I only listen to about 10% to 20% of my original 800+ CD collection because some of them are just too awful now...