A co-worker of mine bought a Luxman receiver a couple of decades ago and I never forgot how he went on and on about how great it sounded....and he used the word "smooth". A few years ago I discovered a very good vintage audio store in Toronto, (Queen St. West, almost at Roncessvalles), where I purchased a Lux R-1050 for $125.
I was immediately struck by the warmth and smoothness of the sound. I have a Harmon Kardon HK 3370 in my living room, matched with two Thiel bookshelf speakers, but the sound just doesn't quite compare with the matching of the Lux R-1050 with two Celestion DL4s. Both speakers (Thiel and Celestion) were purchased for their accuracy, and they are very accurate according to my experience, so I figure that the difference in sound has to do with the receiver. The Theils were bought in the 80's. I listen to classical music most of the time-cd's, and Luxman gives a more "tubelike" sound, ....it gently cuts off the hard edges of digital sound. I hope that in the future I can find a more powerful Lux amp or receiver, and even more accurate speakers, (tube equipment is very expensive). Yes, the seventies were a golden erra for sound equipment.....don't tell anyone. EB