In the late '70s I had a situation that forced me to downsize my system. Sansui had a poor reputation among "serious" hobbyists in the US then but a couple of Brit magazines gave very positive reviews. So I ended up buying an AU-717 to drive the used Maggie MG-1s I found. That was a wonderfully musical system. It even impressed one friend who owned a very high end (read expensive) system built around Hill Plasmatronic speakers.
A few years later I took a Sansui 9090 receiver in trade, that had a fair reputation but I found it just average for a Japanese receiver.
More recently another friend told me about owning and liking an AU-717 some years before we met.
I don't have experience with other Sansui amps but I would say a 717 or 919 could be a good choice if in good condition and with old electrolytic caps replaced.
A few years later I took a Sansui 9090 receiver in trade, that had a fair reputation but I found it just average for a Japanese receiver.
More recently another friend told me about owning and liking an AU-717 some years before we met.
I don't have experience with other Sansui amps but I would say a 717 or 919 could be a good choice if in good condition and with old electrolytic caps replaced.