Whats the deal with these antique sound labs av-8s

I've just heard about these antique sound labs av-8 monoblock amps, and apparently they sound fantastic. Would a pair of these+a good preamp sound good? What kind of pre-amp would go well with these amps? I Know they only push 8 watts each, but supposedly these 16watters combined can push nicely. Thanks for any info on these bad boys, I can't seem to find any info!
-Ben