If you're going to be replacing your JBL's, then I think Unsound's suggestion is a sound one. Then, given a low budget and golden ears, an integrated amp to replace your Dyna would make a good deal of sense, rather than going for low-cost separates. As I mentioned above, a good low-cost preamp is very hard to find (although the Klyne SK-5A at $695 here is a candidate). Your Dyna could be sold here.
As for integrated amps, Bryston, SimAudio and Vecteur are the solid-state ones I would want to hear initially. (I'm betting your SCA-35 has spoiled you for low-cost transistor amps.) Tube integrated amps might include Passion and Cayin.
As for integrated amps, Bryston, SimAudio and Vecteur are the solid-state ones I would want to hear initially. (I'm betting your SCA-35 has spoiled you for low-cost transistor amps.) Tube integrated amps might include Passion and Cayin.