I had a friend that had a Marantz, Ampex setup. Tube type unit.
I was amazed at the lack of dials, buttons and doodads on the front panel of the Marantz but oh, was it sweet.
My first receiever while broke and in college was a 2 or 3 year old Kenwood that I bought from a friend of a friend that got it at the PX in Viet Nam. It was a Japanese model and have no idea what the specs on it were. Best speakers I matched to it were some Advents. Some friends of mine in college had their McIntosh paired up with some washing machine sized JBL speakers. Something went out on the McIntosh so I hauled the Kenwood to their place for a party. I had to drive the Kenwood so hard to get a bit of volume out of those monster JBLs that the Kenwood was in borderline distortion plus didn't have any headroom left to really make the music jump out.
I have a Sony ES receiver now that is in the fuzzy grey zone between consumer grade and audiophile grade gear. I had it mated with some 20-year old Infinity Reference series speaker that my son managed to blow listening to crap rap music and over driving the base. The woofers are sealed (not ported) and were awesome for everything except over driven base.