WHY , vintage gear doesn’t have the parts quality in technology to sound as good as good gear today , even more so with Loudspeakers ,there are very few exceptions.
ican see maybe a McIntosh or Marantz tube tuner, that would be it.
IHave sold for cheap several old receivers .buy for example a modern Coda, Pass labs ,Gryphon, or many other quality brands.
high quality integrated ,or separates with a piece of digital or analog gear
you would never look back ,buy 1 high quality system and be done with it say $30-$40k this would be night and day better sounding.