I have never been a fan of typical Japanese receivers from the '70s and '80s. In general gutless amps with harsh, cold sound. Others will not agree and there are examples of exceptions. Some Onkyo, Marantz and Sansui stand above the usual Kenwood and Pioneer mix.
If I had to have a Japanese receiver of that period I would be looking at Yamaha. Maybe a CR-1020 or CR-1040. Prettier looking than most of the competition and the chassis layout is more open and easier to work on. Anything from the '70s or '80s is overdue for a good service. http://www.classicaudio.com/value/yam/CR1020.html
The only receiver I have personally owned of the period was an Advent Model 300. http://www.davidreaton.com/PDFs/A_very_ ... Advent.pdf
One of the best phono stages ever in a receiver. Ran mine as a pre-amp to a McIntosh 2505 but used the onboard 15 watt amp to run Stax headphones.
Also at the time I sold and liked Tandberg gear. I thought the Tandberg receivers sounded more "mellow" then the typical competition. Might suggest one of the more moderate powered in the line, like a TR 2060. http://seventiesstereo.blogspot.com/200 ... 20260.html
All this is IMHO and YMMV.