The power rating increases more than a bit, as Robert Harley reveiled in his reveiw of this piece for Stereophile some time ago. This is a very nice piece. Very flexible.
The amp circuitry changed in the larger models, such as CA301 and CA401. I believe that in the CA201 and below the amp is the same... only the case design changed.
Hey Bigboy, I'm not familiar with the integrateds, but in the amp line the change is mostly cosmetic. The older series was availible in silver OR black, the newer series is in silver AND black. That's the only difference, as explained to me by a Classe dealer. I hope this helps.
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