@lg1
to your initial post... you should specify what type of sonic improvements you are seeking
the notion of 'jaw dropping' is relative and depends on where you are coming from and what you want to change
your system is pretty good but the jbl's are not the most resolving speakers, though they sound very nice, easy to listen to... so once again, hard to calibrate what will be 'jaw dropping' to you...
to your initial post... you should specify what type of sonic improvements you are seeking
the notion of 'jaw dropping' is relative and depends on where you are coming from and what you want to change
your system is pretty good but the jbl's are not the most resolving speakers, though they sound very nice, easy to listen to... so once again, hard to calibrate what will be 'jaw dropping' to you...