The Sony was rated at 100 watts per channel and was of sufficient power to run the speakers. The first thing that went was the bass, then the mids; it was left with only shattered highs. My point is that the Sony was fine until I hooked up 6 ohm speakers; 2 days later it was fried.
Your situation is not typical...
Interestingly, I used the information on this forum to see if it was safe to hook up 6 ohm speakers to a Sony with an output of 4 ohms. From what I had read, it appeared safe. However, I met with disaster when I followed the advice. The Sony fried in less...
The information on this thread is not necessarily accurate. I connected some very expensive Wharfedale speakers (6 ohms) to a Sony 4 ohm receiver. The sound was wonderful for a couple of days -- speakers were never played loud, as the wife will not permit. Then the Sony fried, nothing but...