In the very early 70’s I had a McIntosh C26 pre and 2100 power amp. Then Audio Research came to town, and their SP3 and D75 made the Mac’s sound decidedly average. Still beautiful to look at (to my taste), and probable STILL working fine, but nothing special sound wise.
Of course, that was a long time ago. Brooks Berdan, a very critical and picky listener, took on the line, selling it alongside Jadis and VTL, Wilson and Vandersteen. Brooks didn’t carry a line just because he could make money on it---it also had to sound good to him. So I assume the current stuff does.