I ran Pr12's for a number of years. I tried several different preamps but always found CJ tubed worked best. Depending on your budget one of the newer CJ preamps would really wake those amps up. If you like the older CJ sound, look for a Pr16, which is a very nice match for the 12's.
Preamp Advice/experiences needed
I recently auditioned a Vac Renaissance Mk 5 and it was damn fine. But there are some issues I have with it that would not make it a great fit in my system and also costs a bit much. I also have on my short list the Aesthetix Calypso Eclipse and Ayre KX-5 twenty. Can anyone chime in with their experiences? any advice is appreciated. (my pwr amp is CJ Premiere 12 monos). TIA