Classe owners: balanced vs. unbalanced?

My understanding is that only the very newest Classe' amps have full balanced circuitry, and I believe the CA-200 does not. That said, I used my Classe' DR-25 (250wpc) in balanced mode and liked it better than unbalanced, in part because my preamp at the time was fully balanced, and so the whole system sounded better that way. In your case, I would say the Classe' may not sound significantly better in balanced mode, but would certainly not sound worse. Due to the length of your cable run, I would recommend using the balanced mode.

I agree with Mitch2!
Especially with that Long of a Cable run - Balanced is the way to go.
But WOW - thats quite a Long Run - is it Absolutely nessessary??
Anyway to avoid that Long Run ?

It's a WAF issue. My choice is either long interconnects or long speaker wires. I can probably get it down to 20-21', depending how I run the wire.

Thanks for all the great advice!

p.s. does anyone know if the CP-35/CA-200/1 have "fully balanced circuitry?"

I would choose longer speaker runs. Lots can happen with low level signals in interconnects. Running balanced is better. I have 2 CA300's and when running balanced, noise is less. But the real improvement is achieved when running them bridged (mono). That smooth tube sound that Classe is known for is even more appearent when in bringed mode. It's not subtle!
Need a pair of Classe CA 300's? I bought a pair of 400's and don't need the 3's anymore.

I am using a Classe CA-151 amp to Classe SSP-25 preamp/processor. I orig. had it set-up as SE, then I switched to Balanced and heard a wonderful difference.
Lower noise floor, better bottom end. I am using the Purist Audio Venustas Balanced IC. The Venustas is an amazing cable!!!!