Their 70s and arguably early 90s gear was truly stunning. I had the AU-217 and 717 amps and they were just astoundingly good. The drawback with the 717 amp was the volume pot which was proprietary, sealed (bizarrely) and next to impossible to service. Plug it up with some WD40 and hope for the best.
Would I buy a 717 now? Not a prayer, yet it's one of the best amps from the 1970s.
The other models? 217 / 317, definitely. The 4/5/717 check very carefully. Expensive mistakes await.
Nice. I think someone can not really go anywhere wrong with Sansui's 70s au line, apart from perhaps the exceptional issue mentioned, which might be a deal breaker for someone starting in vintage audio.
I currently own the Au505 and the au101. It started a few years ago with the entry au101 for a second set a few years ago for a fair price. I have to be honest that I did not know Sansui before. I think I even confused it with Sanyo (which I mainly knew from the cheaper ghettoblaster stuff). It probably did not help that Sansui went into similar territories eventually.
Their 70s gear looked great and I read about the sound signature ahead of purchasing, but wasnt fully sure about it alone. So that half was a bit of a gamble. The other half of the reason why I purchased it was the furniture match factor.
The au101 did not disappoint . It was my first amplifier that had this "other hi-fi personality" to it of when turning the treble and bass knobs, that it kind of 'filled in', rather than bumped in. Also its loudness switch basically added a bit more more body instead of pulling things in a v-shape for low levels.
So, it also lead to purchasing the heavier, but identical looking au505 for my main system to complete the twin-line (I dont think there are more in this exact casing.. could be wrong though)
If the au101 is a fireplace, the au505 is a bigger fireplace. It has this wider spreading of bass and is as musical. Great for the majority of music. They are not really amps that showcase crystal clear hi-resolution "airyness", which I also like a lot, and that's where my Luxman or Yamaha do a great job. But dont really miss that in general. There is a case for both worlds to defend.
🙂
By the way.. what about the 90s line? I know from recent searches that the alpha series exist(ed) (80s /90s perhaps). Is that the line mentioned?