Amplifier for Kharma CRM 3.2F

I would suggest Wavac of some kind. If you can afford the HE series your in for a surprise. They sound like nothing else. However I do think you should give the Italien made Master Sound amplifiers a seriouse listen as well. The Master Sound 845 parallel single ended monos are extremely good.

I would probably want more power than a 300B amp.

Kharma and Thor work exceptionaly well.I would demo a pair of TPA 60s. I am using Thor TPA 30/and t1000 Linestage with
Kharma 1.0, wonderfully match. If my memory serves me Thor Audio uses the Kharma 1.0 at his workplace facility.