The Classe should be stout enough in the power suppply to be able to handle that 2.3 Ohm minimum. The good thing is that this a dip that is not present for most of the musical content. I am guessing one of these spekaers is the CS6. What I can tell you is that watts per channel do matter for these speakers. I had a Krell 300cx for a day before I traded it up to a 400cx and the additional WPC gave me more detail and soundstage with the CS6s. But I also had a large room to fill with vaulted celings. If your room is not too large this shouldn't be a problem for you.
