Ok, everyone knows, that every guitarist´s sound comes basically his fingers, that very personal way how he touches the strings. In this point, for example, to me Rocktron Voodu Valve is very very versatile pre-amp, because if you can use it´s all abilities, you can get almost every sound, but not his. (Ok, ok, also sounds like Steve Vai, Brian May, etc. are hard to get, just because of this finger-touch-thing) Now, is there any all-tube head/combo + floorpedals, that produces that amazing Moore sound?
Especially I LOVE Moore´s Blues Alive - album. I have played it thru several hundreds of time, and it still makes impression. Also BBM-album was very good, Moore played just as hot that E.C bib before him.
Gary Moore´s sound is very similar to Stevie Ray Vaughan´s sound - differences are just about amount of gain. Both has very, very screamy and sustained high-end, while bass-end sounds more cleaner. (Few years there was article - i dont remember that guitar mag´s name now - about Diaz amplification. They mentioned, that Diaz has just this point of sound - High is very sustained and it screams, bass end is much cleaner.)
BTW, funny: When you start to play guitar, it is very important to you in the beginning, that you can play every scale etc. so fast as possible. When you have played several years more, you start to learn to play slowly - and try to sound just great. Steve Lukather is good example of this. 5 or 6 years ago I listened TOTO´s Mindfields again, and it is intresting, how "little" he is playin´after all, you know what i mean? Kinda minimally. He just lets those few riffs to melt into other instruments sounds, not tryin´to lead them. It was breakthru to me. In moment i knew what this all is about.
So, when i realized this thing about playing guitar - after 18 years - my heroes are Brian May, G.Moore, Dave Gilmour, Mark Knopfler, Eddie Van Halen, Steve Lukather.