DIN
Deutches I something N something
The universal European standard, probably the primogeniture for the EU. DIN power was kind of neat. It was a music power, but instead of running into 8 ohm test resistors, they had a nominal 4 ohm load with capacitance and inductance, a sort of "average" dynamic speaker simulation. DIN did the preheating trick, and I believed capped the distortion at 1%, so it was an honest attempt to spec power. Here in the states we learned about DIN by listening to thin B&O receivers rated at 22 watts DIN that could play quite loudly with B&O speakers. I do not believe DIN was 20-20K at 1%. We need to add to this thread and do a little research.