hm... I'm not sure..
about Alexi's guitar:
it's a Jackson RR1 Custom, as we all know. Bolt on neck (ordinary RR1s feature neck-thru). It's got only one pickup which is a special humbucker made by Jackson (no EMG! I was shocked when I could see over his guitar at the Sinergy gig hehe).
It's an active humbucker like EMGs that additionally boosts the output. That's why Alexi's got a pretty massive sound even though he plays a Rhoads model, which originally sounds pretty thin, due to the body-design. Though the custom pickup wasn't actually made for Alexi. He bought the Guitar used. Well that's what I've heard about the pickup... Afaik there is/was a special RR-Series in Finland, a signiture model called RR-LL (of both Sinergy guitarists), a modified RR3 acutally... I guess these guitars featured a similar pickup.
At the Sinergy gig Alexi played with a Rocktron Chameleon preamp. You might know that thing. It's the predecessor of the Chameleon 2000. Power amp was a Velocity120. But it wasn't his rack, I guess. All bands played with the same equipment, except of instruments. The sound was really ok, sounded very similar to his tones on CDs.
Ale uses Performer Series, but I don't know which model...