My first decent approach to what Hifi could be, about 35 years ago, was listening to a Bose 901 based system powered by Harman Kardon amps. That was pretty enlightening, good enough to get me engaged to this hobby. Of course I hadn't listened to any higher quality system before, so memory's tendency to embellish the recalls and the lack of perspective make for a beautiful wrong impression, but I still keep some respect for their older stuff. I haven't listened to a Bose system in years.