Hey, thank you VERY much. You are a great help! A guy told me, that OKM II Pop is completely unusable for rock concerts, because the bass is completely destroyed as a result of the striking membrane. Do you agree? I played a little bit with my stereo with high bass pressure. Set mic sens to low, -20db switch on, line in, 15/30 record volume. Worked pretty well. But I don't know if you compare this to a live concert in a hall. The other problem at a concert is, the nearer the end of the show, the louder the speakers. So I assume that you have to correct the rec volume from time to time during a concert.