sansui or yamaha

I had a G8000 that was a fun match to some Pioneer 99As, but when
matched to any type of difficult load would go into protection if driven hard. The Yamaha A-S2000 is a more neutral & powerful amp. It will more
easily run more modern speaker loads, cables, ect... I ran an Empire tt 598 into the Sansui with good results & only moved on when tiring of the suspended table, & now match a VPI Traveler to the Yamaha. Both can provide hrs. of enjoyment. The Yamaha is an exceptional value.....

I'm late but I've owned an A-S2000 for about two years and it is an amazing integrated amplifier. I use it to drive my ATC SCM40's and the sound is amazingly revealing and clean with no signs of brightness. I would caution against using it with the 2m black, however; as that is simply more cartridge than you'll need if you are using the built-in phono stage. I had that cartridge and it worked well with a separate phono stage (Pro-Ject Tube Box SE II/Rega P5) but the built-in stage was not up to the job. I would say that the built-in phono stage was very nice with the 2M Blue I tried but the Black just embarrasses the built-in stage.

Another vote for the Yammy, how irrelevent this comment by Yogiboy, completely unfounded.

The Yamaha MX-1(production 92-97) is one of the best budget power amps i've heard! One just sold here a few days ago.

Keep the Sansui amps. I used to own them and could kick myself for selling them. Get a new amp is you want, but the build quailty of vintage stuff is hard to find these days. I now keep all my old stuff for my audio museum. Nice thinhgs to have on the walls under glass in your listening room.
They may now be outclassed performance wise, but they sure look good.
Cheers