An upgraded Sansui TU-X1 tuner was the best sounding tuner of any I have ever owned, and I have owned many high end tuners. The upgraded Kenwood KT-917 i have is close. Better resolution but not quite as lush and with not quite as big a soundstage. Perhaps the only modern one close might be a later model Accuphase.
Sansui?
I have a brother-in-law, retired Navy, who is interested in a nostalgia system. When he served in in Pacific in the 80's they could get great deals on Sansui equipment and is of the opinion that Sansui was top of the line. He asked me what I would get but I'm clueless about 80's receivers. I doubt that he wants separates. I'd greatly appreciate hearing your opinions. My brother-in-law is partial to Sansui, but should I suggest something else? He's got good ears even though he's not an audiophile. Thanks.