Feature:
Like most amps this sucker is heavy and I have it in it's own case. It has taken rough treatment and works great for compression and clip (as tested when vocalists toss or drop the mics). If you got it cranked make sure it has plenty of ventilation as it will be warm, but the fans work really well and are quite.

Quality:
This thing is built to last. Again, it's heavy but can really pound out some serious sound.

Value:
the amp is pricey. Setting up with a few racks of these (if you have a linear system) would make the pocketbook cry for sure. I only own 1 right now however so it wasn't too bad.

Desirability:
It's not full of fancy stuff but it tells you when the signal is coming in, if it's clipping and when the compression drive is active. Simple stuff really. The design looks hot and professional.

Sound:
Quality is really great. I use this baby on a pair of SP6's and it hammers all night long without any problems. Sounds great no matter if I'm doing karaoke or running sound for a 6 piece band (with full drums mic'd). At 80% outdoors you can hear this thing over 2 miles away.

Ease of Use:
Plug this in and it fades on (in the event you leave the volume cranked) so you get no on thump etc.

Support:
I called Peavey direct before I bought this as I wanted to be sure that this was the right power rating for the big SP6 mains. The sound engineer I talked with was really helpful and knowledgeable. Peavey also has sound user guides on peavey.com so I suggest looking at and reviewing these guides as they cut through all the BS you hear about pertaining to how big to power how much kinda stuff.

Overall:
Despite the price I'm happy with this unit.

Feature:
The only drawback is that you can't load it to 2 ohms. The directions are VERY specific about that.

Sound:
Oh.....My......God!!!! This thing is powerful. And clean, clean, clean.

Quality:
The second time we used this amp it blew up and took 4 speakers with it.

Value:
If it is not road worthy I don't want or need it at any price.

Desirability:
I wouldn't care for one at all after using it. We may have just got a Lemon but from my personal experince I can't afford to keep replacing amps that go DC and the speakers they take out when they do.

Sound:
lots of power but with no warning it went dc and took out 4 sub cabinets with it.