The tone is honestly in your fingers and at a certain point you start sounding the same through pretty much anything you play. Granted, some amps are clearly better than others and in live and studio situations the better quality the amp; the better off you are. However, I tell people time and time again that if you want to get the tone you are searching for it starts with "you." No matter how hard you try you simply won't get the tone you want until you yourself have the skill and feel of that style and vibe. You could put Eddie Van Halen through any amp and he will sound like Eddie. You can plug Bill Frisell into any amp and he will sound like Bill Frisell. Listen to a 3 year old banging the strings on a guitar non-sensically and it will sound, well, non-sensical no matter the amp.

This isn't to distract you from thinking you can't get the tone you want from the gear you have. From working in music stores to playing gigs and producing music, I have seen the same thing over and over. It starts with you, and your feel and skill level. From there, you can make anything work. Now go practice!!! :D