will this really be an upgrade?

Trianglezerius, what would you suggest I do?

Look at the MapleTree tube preamp for around $650 brand new. It is the best preamp thta I have heard under $2K. You get a 10 day in home trail period so you cannot go wrong.

thanks Bigkidz.
I listed my post to try and figure out if their was any basic 'rule' on how much to spend on your next upgrade. I didnt want to end up buying something that would expose shortcomings in other parts of my system. My main concern was, whether to upgrade incrementally , or go the whole hog and get something like a Joule, Cary, etc.

using the B&K ST-2140 amp, and have two subs already.