Interesting choice. I've seen pictures of these, but never yet had an opportunity for an in-person audition. I imagine they are in the same general "style" of cap coupled sound as the 2000A and others of that time frame.
I repaired a Sansui 5050, after the repair i listened to it for a few days, having said that I liked it so much I was on the search for one that needed repair. Got one with no bottom cover for cheap . Still in my queue to fix but it's a nice little 30 watt receiver built from 76-77 .
Have a look , I remember i loved the sweet sound it made in my shop.