I'm using a JC 2 BP with JC 1 monoblocks, but I have a K-5xeMP that I haven't sold since I bought a KX-5 Twenty. Used, both preamps are about $2.5K according to the Audiogon Bluebook. In his 2011 review of the K-5xeMP, John Atkinson compared it to the JC 2, and preferred the K-5xeMP, although noted it lacks some of the "air" of the JC 2. That air might be what you find harsh. I've been intending to try the K-5xeMP with the JC 1 amps before I offer it for sale. Either is a damn fine preamp.
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