Sunfire Signature... what is this?

If it says Signature on the back and has his signature on the front face as you say then it is surely a Sig 600. He did not make a Sig 300 etc....

If the binding posts have the red and black plastic covers, then it is a first generation. If the solid steel posts with an IEC, then the second version.

The 600 is very powerful and you should notice this immediately in your system.

Yes you are 100 percent right. Send it in and it will come back better then new. I could not believe the improvement. Also get an iec and use a better power cord.

Yours is the Sig 600 and I understand now that you already had lots of power before the 600.

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.