Whoever told you older gear will not sound as good as newer is absolutely full of crap. Also the dealer who said BAT sounds awful is also. I've owned several pieces of BAT. Good stuff. To reiterate above, buy the best preamp you can. You may also want to consider Audio Research line. Not sure it's a good match with ATC though. Separates will sound better this i do know unless its really high dollar integrated.
Again, buy the best preamp you can :)

