Of course, the new always comes. Is inevitable. But on the way rest some awesome stuff forgotten among the waves of time and the stacks of influencers, who hear for us in these days when warehouses took the place of AV gear stores.
That said, come the Sansui gear and I wonder why a could choose not to pick one of two of them on ebay for 200 or 300 bucks. Class D amplifiers are getting better each day (their design is so bland), but it is great to realize how good these vintage amplifiers sound. And getting two of them, you realize that you cannot choose just one, because each of them represents an era. The 1978 Sansui AU 317 with its tape/vinyl like sound, denser an thick with soft highs and great bass and midrange, a perfect blend with more open and refined speakers like my Paradigm Premier 200B and the Sansui A α7, from 1994, with its refined sound, with clear mids and great, smooth highs, like finely sifted flour.
They are handsome gear perfect for a 12m² room like mine with neighbors on the other side of the wall. And I confess that buying them, I can give a testimony that old pieces like me and these amplifiers can deliver good work. So, I will keep mining these precious stones and their heavy transformers while I have some good technicians here to fix them (a really easy job) and the energy efficiency hype takes its place elsewhere.
The Expert Pro 440 in my case. I am not unhappy about them. Sure, the price may be... questionable. But they are also fine on the eye. Of course, I read the reviews here as well before buying. It's mostly that I am not listening too much, and software/embedded software within this current state of the world, is not something I like to keep sitting around and do nothing. A good non-smart amplifier may be more durable in terms of technology, and I can build a streamer myself, as programmer. Convertor boards are quite available for things like raspberry pi or like-wise stuff. Heck, even ESP32s 
