I owned the SA9 and SA 11 for many years.
They were my "absolute" reference phono and line stage until the Aesthetix Io and Callisto came along (about 1998).
Remember, the SA9 was designed about 1982-1983 and was produced in 1984 and beyond. Crazy good for that time.
I'll bet if Mike at Aria rebuilt one and got it to max performance it would run with some of the best offerings of today.