From The Vintage Knob:
Apparently, the looks of the series turned a few customers away... way too serious looking, especially considering the period during which these were introduced.
But once you let any of these warm up - bang !... you'd almost wonder what hifi did do for the past thirty years to bring you a better music reproduction ; hook it to a decent LP turntable and you really start wondering.
I couldn't have said it better!
Check out the incredible history of Denon.