Need Some Tube Amp Advice

I am looking for advice on a tube amp and preamp setup that isn't outrageously expensive but best bang for the buck.  I have a pair of Klipsch Cornwalls from the 80' and they sound rich and beautiful however I know they can reproduce better results if I get rid of my 100wpc Yamaha solid state amp!  I love jazz and vocal music mainly with some rock and roll mixed in.  I listen to almost exclusively vinyl on either my B&O TX turntable or my Yamaha PX-3 turntable.
As I understand I can customize the tube amp to more of what I prefer but really know nothing.  Please help!