Any of those amps input impedance are fine. I would go for the new amp!
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I forgot to mention,I owned a Classe model 15 years back. It was a great amp but as soon as I went to a tube preamp the amp would shut down. Classe has very sensitive protection circuits and any bit of DC will shut them off. As far as the Cj amp,it is at least 20 years old, it is likely a fine amp but why buy a headache down the road?