I have been trying to get rid of excess stuff lately and dropped off a Yamaha receiver and ADC eq at a small local thrift store. I like going in this place because I find goodies once in a while. Apparently most who drop stuff off are doing it for a little cash as times are hard. The owner was so pleased with the stuff I have been donating that he gave me a silver face Hitachi receiver from 1979 that I was eying. I tried to refuse it as I am trying to get rid of stuff but he insisted. He knows I like to fix stuff up and he said that this one was not working.
It is an SR-604, Class-G; whatever that is an was rather grimy to the touch. I got it home and found that the pots and switches needed a good cleaning, as did everything else, and it has some light out. DeOxit contact and fader cleaner to the rescue; it works great. I gave the rest a good cleaning and found a diamond under the dirt. This thing is like new. It didn't even have much dust inside. Now all it needs are a couple lamps and it is golden.
The Hitachi sounds quite nice with the Advent speakers that I recently restored. I may have a nice vintage system for a basement rig.
Anyone know anything about the Class-G amp?