Feature:
Good features: the aural tone knob is very cool, the bass intensifier allows a lot more bass, the limiter keeps you from distorting your amp and screwing it up.

Quality:
Very good quality. SWR makes great amps.

Value:
A little expensive but thats what you would expect for such a powerful amp and such a popular brand name. The price doesn't even matter... the amp is great

Desirability:
I have always liked the SWR logo. I like the red on the 900 amp. But this amp looks cool too. There's a really cool blue light that comes on when you turn the amp on and when you activate the bass intensfier.

Sound:
The sound is very impressive. You can get a ton of bass out of this thing. You can shift the Aural tone knob and change your sound to match anything you like. The bass intensifier adds a whole lot more bass to that! Awesome sound!!!

Overall:
Awesome amp no doubt about it. I don't have much money and this amp hurt my wallet a little bit but other than that this amp kicks!!! Definately the best amp i have owned.