I've setup a 3 zone audio system each being run by a Hifiberry Amp2 bundle. I followed the multi-room guide on the Hifiberry website. Each Amp is being powered by the MEANWELL GS60A18-P1. Each zone consists of two 8 ohm 60 W passive speakers.
Now my problem is that my basement zone sounds crystal clear perfect. While my main floor zone has medium audio distortion and my upstairs zone has high audio distortion.
I have swapped out the basement and main floor raspberry pi's and the sound distortion did not change.
Any help to identify what the issue is would be greatly appreciated.