Managed to get my 3B SST/2 to go into thermo shutdown in right channel, last night. First time it has happened with this amp, forgot to turn on floor fan for cooling.
What I was doing different was playing ACDC on computer with media player volume set high. Only had the processor volume at 12 o'clock which for me is low volume, but the db was still very loud. Anyway with the media player volume set high, I get improved micro-detail.
I have a HD audio card in my computer laptop so I think it sounds better than using my standalone Sony player. Though it might just be my imagination.
Waited a few minutes for the amp to cool down, light went from yellow to green, and I was back in action.