The ones I loved best were the previous CR800 and CR1000 (all those flick switches)
I was given back a CA1000mk2 which I originally sold. It wasn't as good as I'd hoped and Class A was the only way I could get any ambient information out of it.....
Apart from vintage Luxman, some Denons and hideously priced Accuphase, there's not a huge amount of Japanese amps from the mid seventies that's really much cop. So many of them used huge amounts of global feedback to reduce distortion - trouble is, all the fine detail was lost in the process.