wow, what a heated discussion!
I'm a novice at electronics, but i read the specs on the technics. you can make very impressive distortion numbers with a crapload of negative feedback, so lets take distortion out of the equation for now.
i couldn't find how much current the SA-1000 has. but judging that it doesn't double it's power unto 4 ohms and it only as 160 dampening factor, I'd say it's power supply isn't all that robust. you can't get all excited about how much horsepower (wattage) the thing has into 8 ohms, what does it do with regard to more demanding loads. looks like it starts to whimper. a 25 watt BELL class A amp hit like 400 wpc into 1 ohm! now that's some current!
so, i do NOT know much about vintage receivers, but it just seems to me that whereas vintage tube amps, when restored, can hold their own against modern tube gear, you can't really say the same about vintage SS gear.
transistors have improved leaps and bounds over the 1970's variety. my friend is modding my 1984 Quad 405-2. i can only imagine what it would take to modernize all the crap inside one of those monster receivers.
bottom line, I'm not knocking any of you monster receiver cats. i bet these bad boys bring back lots of great memories. but, if i had $1,000+ to blow on an SS amp, it would be a vintage threshold stasis or a krell KSA-100.
see ya,
Robby