DAC2 HD pop noise when powered on/off

Hi, I have a Hifiberry DAC2 HD that causes a very loud pop noise when powered on and off. I'm using a Pi 3 B+. This happens with an external amplifier and also with the Aamp60 hat with a Meanwell 18V 60W PSU connected to the DC input of the Aamp60. I also have an AMP2 that does not cause any pop sounds when powered on or off with the same PSU and speakers. If I connect the speakers after powering on the Pi (or turn on the external amplifier later than the Pi) there is no pop. Did anyone else have this kind of issue with the DAC2 HD? What can I do to avoid these pops? Best regards, Peter


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