There isn't a lot wrong with what you have now. The 11 is a good amp (the 11a was an improvement). You might consider upgrading the preamp (I use a CJ Premier 14).
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?