I don't know what's going on here, but some people have definitely gone off the Edge with pricing. Improper eating of poisonous blowfish, perhaps? It's like paying $500 for ref1 and $500 for the integrated
Too bad the ref1 is rosewood; I so love the birdseye maple and would buy the package with birdseye even though I absolutely do not need it.
As far as the SP3, I love the fact it's using 5881 output tubes (aka 6L6). This tube is some of the best output tubes out there, and should (in theory) provide more neutrality and resolution than the EL34 types.
One strange thing I noticed, though, is the input impedance of 250kOhms. I've never seen such a high input impedance, as you usually see 100kOhms at most with tube amps, and usually like 25kOhms for solid state. Anyways, even CDP's with piss-poor output stages should be able to drive it to Kingdom Come...