Sunfire Signature... what is this?

Your new amp is very powerful and is of a different design then most SS amps. It does indeed drive difficult loads with its rated power into 8 and all the way down to 2 ohms.

It drove my large and very difficult to drive Soundlab M1 speakers with absolute ease. It always ran cool also. To my ears it greatly surpassed the stock 300 watt stereo amp in my system.

Bill at Carver's authorized repair facility will do what is needed and go thru the entire amp with extraordinary care to every detail. My Sig 600 came back with an entire new right channel board, power supply caps and the voltage rails adjusted for maximum performance. He also replaced many caps with higher rated ones based on learnings over time.

I put an iec on mine and used a good quality aftermarket cord. All of these things really improved the sound to my ears on my SL speakers. I think it will be a keeper for you. I think it shares the same sized transformer for two channels as the transformer in that multi-channel home theatre Sig amp.

Doesn't the Sunfire amps have a feature for solid state sound or tube sound. I looked it up and it said, For those who prefer the crispness of solid state amplifiers, there is a voltage source output, and for tube sound, there is a current source output. You put it on which ever one sounds best for you.
Which one do people like the best?

Twilo, the manuals suggest that the current source is possibly better for planar and/or ribbon speakers, the voltage source for conventional cone-type drivers. For the magnepans, I prefer the current source. Some classical pieces will bring tears to your eyes, the sound is so poignant.

You can also bi-wire, if your speakers allow for it.

I think "best" would definitely depend on the speakers you're driving, and the material you're playing.

Grannyring, Bill at Carver's repair (formerly Rita's) did work on my Cinema Grand... the service isn't cheap, but it's worth every penny. That amp got damaged by lightning, Bill brought it back to life. Soon, he'll be getting a look at this sig-six.

I own a Sunfire 300 and use both speaker outputs; VOLTAGE (traditional SS sound) to the woofers and CURRENT output to the tweeters. The current output is a more natural sound, for example, horns sound more realistic, less bright....but that's my taste.
The 600 Signature has a massive power supply and when u get it back from Bob Carver you will definitely love it.

PS... download the manual, it's very well written.