Top 5 recievers of the 70's and 80's ????

Harmon Kardon  HK 730 twin power. I bought the Luxman R115 to replace it when a channel quit working (Power Supply). I HATED every minute with the Luxman. No bass line whatsoever. Just a thump of the bass drum. I had Original Large Advents so I know they were capable of good bass. I spent $80 to get my HK fixed and  sold the Luxman and lived happily with it for 10 more yrs. I still have it, though it needs some restoration. I mostly cringe when I see others who like it, in the same way I do when Pioneer is mentioned, though they had plenty of bass. I think I still hear some bass overhang from the early 80's. This is my experience. If you like them then so be it. We all have different preferences.

The Concept receivers were very good. 
The Grundig receivers, when match with Grundig speakers are out of this world. 

Fascinating. Had no idea there even were any good receivers.

Sansui 9090db

onkyo tx-890
 Old Yamaha receivers

I enjoyed a Marantz 2275 and later a Tandberg TR2080