Feature:
Go to the website to see the list, the coolest fact about these is that while they may be new on the market, your amp can GROW, with the technology with the free upgrades to the firmware. Which to me, I think is WAY cool considering if you purchased any other "modeling" amp in the past, it would soon be obsolete much like the computers of today. Btw, you don't NEED, a sanpera, but they are pretty damn cool if you want to use the looper or the wah (both of which perform and sound perfect.

Quality:
It's a PEAVEY and they don't put out crap.

Value:
Buy one and play it, if you don't think that it's $450 dollars well spent on a piece of guitar equipment, well, maybe you should A) Keep saving your money or B) stop playing guitar, because I wouldn't want to hear anyone play a guitar if they couldn't get some amazing tones out of this baby.

Desirability:
Just hearing about it and what it did over the past year, I wanted one. Stock, I think they are physically ugly though, so I "de-fanged" mine and man is it one sexy looking retro-classy rockin' combo from outer space...

Sound:
There have been only two "true" tube amps I have played and think I would be fully satisfied if purchased... that is if I could even come close to affording them right now; a Diezel Herbert which I think was over $3500 and a VHT Pitbull, which was close in price as well. Either way, these are made for WEALTHY PROFESSIONAL RECORDING ARTISTS!!! With those two amazing amps aside, being perfect 10's in my opinion tone wise, how does the Peavey Vypyr rate, an easy 8... that's right, I've dialed in tones that satisfy my tone lusty ears that are purdy dang close to the tones acheived with both of those amps, this isn't a plug in, hit a button and sound like Slash or Van Halen right away type amps (no amp does this anyways). But, you can, with the right ears and some tweaking, dial in pretty much ANY sound you're looking for with these amps, I am convinced. $450, 60watts and one twelve in. speaker... I'm happy, and if you're not, keep saving... I'll be Rocking out.

Ease of Use:
Easy, once you get it, you got it and the sky is the limit.

Support:
Peavey. USA.

Overall:
Well I don't know, I think it's just a matter of time before I will be lusting after the 120 watt combo, or maybe even the head... but I am partial to combos... I like it all in one piece, like a suitcase full of destruction, power and beauty at the same time.

Feature:
it is beats to get the sanpera 1 or 2 it really unlocks the true potential for this amp.

Quality:
very sturdy amp and pedals it just a vrry good amp.

Value:
very good value would buy this amp for the price.

Desirability:
its SEXXY look awesome light show when u turn it on.

Sound:
sound quality is perfect out of this thing from rock hard metal to clean warm sounds.

Ease of Use:
dial in what you want and there ya go.

Support:
dont need.

Overall:
the best ampo ut there for the price ALOT better than the line 6 spider..... they sound like some 1 is crunching on tin foil..