The main advantage of a rack setup is that it allows you to mix and match preamps and power amps so that you can get more different sounds.

I'm working on a rack rig myself.
Quote by Cathbard
If all you had to go on was the forum you'd think a Decimator could cure noise caused by dodgey stage lighting and restock the ocean's population of sperm whales
a normal mesa boogie tube amp is that same pre-amp he's using, but coupled with the mesa power amp in one convenient box. the appeal of a rack set up like he's using is the ability to mix and match different pre and power amps. (pre-amp = tone shaping, power amp = where "volume" is created via adding energy to the signal strength.)
Quote by ClassicAxe

consider anything derek suggests, He IS a gain VVhore you know
Quote by jj1565
derek, will you go out wt me?

President Gain Whore -group on profile