I don't have much input to help you, but...I'd scratch the Rogue amps. Very good amps...not "Classic"
Don't rule out Fisher amps. I have a fisher X-100-B integrated. With a few cheap modifications including bypassing the preamp section, you will have an amp that is not only cheap to buy but cheap to maintain. The output tubes are about $10.00 each and it only needs 4. The amp throws a huge sound stage as well as placement that can't be believed. Every time I put it in my system I get a big smile. It usually stays for a couple of weeks before I go back to the so called better amp. All this from a 40 year old amp, not much has changed in that time. Who says one needs to spend mega bucks to achieve good sound. I bought mine for $400.00 (and I know you can buy them cheaper than that, this one is perfect cosmetically) and with less than $50.00 in parts, wow. Good luck with your search..............Bob
Hi Gonglee. Not sure about the rouge stuff but any of the classic amplifiers on your list would partner very well with most any the alnico based JBL's from the same era. I am assuming you are thinking tube amplifiers here however I seriously doubt you will find a classic tube amp from the likes of Marantz, Mac or Quad for under $500. That said, the little sherwood S5000 is a honey of an amp as well as the grommes stuff already mentioned. Others to consider are the eico integrated's as well as the classic Fisher 400 receiver which will allow you the luxury of a top shelf tuner to boot. Best of luck on your journey.