Hi, reading the string with interest. I had a CJ 12AL (12au7 tubes) pre for several years which was a warm/lush preamp for sure. A beautiful sounding piece. I replaced it with a Odyssey Candela preamp to mate with my Odyssey Stratos. It leans to warm aide of neutral and responds greatly to nos tuberolling. I default back to bugle boys. I assume it falls well within your $3K limit but a call to Klaus could answer any questions that you may have.
Take care.
Take care.