4 of 10 hp, a tweeter, adjustable wheels + a handful in the back, still retractable handles on each side. He can forget his weight.
The rest of the features, cf. below.

I use a Hartke HA3500 with a Sansamp preamp BDDI, the low distortion EBS, a Musicman Stingray. The baffle compensates the side of the head hifi too.

EDIT: I now use it with a SVT-3 Pro, a good couple. The preamp is useless.

SOUNDS

The speaker sends a pretty amazing amount of bass for an 4X10, vents at the base are for nothing.
Treble are very well rendered, too, the tweeter is a remarkably well taf.
It's dynamic, powerful, round and defined. Very effective.

OVERALL OPINION

I use it for two months. I love this sound typical Ampeg, full of potatoes and heat. A 4X10, it sends really fat.
I have tried many speakers of the same size before I decide for it (Eden, Hartke, Galien Krueger etc... Etc.), and I see that Orange to hold head. And even in a book quite different.
It's expensive, but it can be found in the 700 was nine (Euroguitar).
I highly recommend.