I've had an AS73 for a few years now, and at first I was underwhelmed, but with a very small amount of tweaking, I'm now very happy with it. First thing is the bridge. I don't know if I got a bad one, or what, but my bridge was crap. Very poorly machined, and the first time I tried to adjust intonation, TWO of the saddle adjuster screw heads just snapped right off with minimal pressure from a small screwdriver. So, I replaced it with a Gotoh bridge from Stew-Mac (it appears to have the identical dimensions to a Les Paul bridge) and the difference was amazing. Better action, better intonation, and I swear better tone.
I use Ernie-Ball Standard Slinkies 10-46 on mine, and they sound and feel great. Many people recommend heavier, but I think you'd have to widen the nut slots.
Get the action set nice and low, and don't have too much angle where the strings come off the bridge on their way to the tailpiece. I'm thinking of replacing that stupid slotted tailpiece with a regular LP one so I can wrap it around.
Experiment with pickup height. Makes a big difference.
The neck pickup is sweet, and sounds great through a warm clean amp. The bridge pickup is a bit weak, if you ask me, but does just fine through a rock-style distortion pedal like the DS-1 (yes, I like the DS-1).