What is your setup right now? Guitar? Amp? What is it that you're missing with your sound.

It's hard to answer exactly what Tarot and Aerosmith used, but Aerosmith probably used older Marshall amplifiers with a big variety of guitars - anything from Les Pauls to Stratocasters to Flying V's.

Tarot has a heavier sound, and on the recording they probably used many guitar tracks recorded on top of each other, to get a heavy thick sound. They probably used humbucker pickups (like a Les Paul). I have no idea what amps they use, but many metal bands like the sound of Mesa Boogie amps. Of course, many of them use Marshalls too. They may also use some kind of a distortion pedal to beef up the sound even more.