marantz sa-7s1 vs marantz sa-1

hi, between these 2 reference sacd players, in term of sound, how are they different, opinion please
Well, it was 10 whole years ago, but I was extremely impressed with the SA1 in the Joseph Audio room at the NY stereophile show with his 7si (?) floorstanders I think, both in sacd and redbook.

I think the room was voted one of the best rooms.