Don’t sell your CJ stuff, please. I’d start with getting NOS preamp tubes for both units and replace the 6550’s if necessary. NOS tubes are way better than the modern tubes CJ that sells at a ridiculous mark up. Then, replace ALL the electrolytic caps. Finally, replace all the coupling caps with Mundorf Supreme or better. Finally, get a used Klipsch powered subwoofer. I guarantee you will be super happy with the results and will have way better sounding equipment than any of the brands mentioned above.
Replace CJ with new equipment
Klipsch Klipschorn Conrad Johnson Premier 11 amp Conrad Johnson PV 12 with phono line pre-amp Would you rehab CJ amp & pre-amp or sell and get new equipment other than CJ. if sell what would you replace CJ with?