RPI4 + AMP2 +Max2play or HifiberryOS + 2 Speaker = Sound Crackings

Hi Guys, i have 2 times the same Setup like in the Headline both have the same issue. 

If i put 2 Speaker (8ohm) at the AMP2 i will get only cracks.

if i put 1 Speaker at the AMP2 it works fine.

I already have  tried 12V and 18V and 24 V powersupplies.

Same Problem with Max2play and the last HifiberryOS.

My Raspberry is the Version 4 -2GB

Hopefully somebody can help.


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