Sunfire Signature... what is this?


Recently bought a Sunfire Signature amp, believing I was getting the 600x2 model. The front panel has "Sunfire" above the Joules meter, and "Load Invariant High Fidelity Stereo Power Amplifier" below. A Bob Carver signature is on the upper left of the panel. The rear panel has "Sunfire Signature" just above the serial number (which starts with 99), and a lot of the other normal printing. The two speaker fuses are labeled "5 Amp SLO-BLO MDL/Q", and the AC line fuse is labeled "10 AMP MDA-10 120 VAC", which makes me question if this is a Sig-600. Any thoughts?
davidag
I ended up with 3 of the 600 signatures, it took some time though. I run 1 amp per Carver Amazing using Electric crossovers and keep 1 amp as a spare.

I have the original 300 watt/ch, Sunfire amp. I can't remember where I read this, but I heard that REL subwoofers may not be compatible with this amp. Has anyone else heard of this?