Greetings!

It seems to be band 1? Perhaps try swapping out that frequency into another band of the EQ. Yes, it shouldn't matter, but it will eliminate the first band as a source of problems as opposed to the frequency itself. I also note that you are centered around 50Hz. I tend to get a little more nervous around the joyous 60Hz area. (US AC power runs at 60Hz for those not in the US.) Could there be something in the original recording or in the audio stream that is "adjusting" the audio around 60Hz? If I remembered my math, I would try to figure out where the 1.4Q setting you notice the clipping fall off is, frequency wise...