I've been running it all refreshed for the better part of this year and its quite surprisingly good. I've driven Dynaco Mk4 mono blocks (also moded), Audio Note Quest's ( borrowed for a month while i was considering buying them), Finale Audio 300b amp and a surprisingly good little Burson Bang (22wpc) that little guys is quite detailed and extended and drives the horns very well, almost better then some of the tube amps I've tried. 105db speakers mind you.
I expected the old Sansui to be overly warm and well vintage sounding and its far from that. I'd say its very neutral (with the tone bypass engaged) and the volume control is so smooth and responsive. Its really nice having more then a couple inputs and two sets of switchable (1,1+2, 2) outputs. I really like many of the features these older preamps offer that the newer ones have dumped decades ago. obviously when you use many of them it degrades the sound slightly but fortunately you can bypass it all.
over all I'm quite happy with the sound. yes there's better but from what I've heard in comparisons you need to spend many $thousands and lose all/most of the features. Only thing I'd like is a remote but I can live without it.
I've been pulling back from the supper high end and exploring vintage and obscure gear. As my hearing degrades as I age (55) and from my tinnitus I don't see the need to chase the never ending quest for ultimate sound that in my experience just ends up being too detailed, too in your face and no musicality.
there's a point when a Ferrari is just a car and your paying for a name and bling nothing really more. Same goes for audio equipment some are willing to pay for the name and bling I've moved passed that in my music quest and just want to enjoy the music with out evaluating the sound quality all the time.