Ok, till know I've tried the following:
The system with no audio input, which means amp is on, speakers on but no audio connected, equals to no noise!
If I connect the tablet, or my phone using the 3.5mm jack into the amp, everything works beautiful...
If I connect the player (Android box...) the noise appears, and does not go away, even if I:
-disconnect the network
-connect the ground to it
-use analogue audio output
-connect ground and then connect ground lifter
I've also tried to remove the ground from the amp, makes no difference.
I've spent too much time trying everything I could think of... to the point were I was very close to punch the little black box...
If was data noise, I believe you mean network data, should that not stop when the cable is disconnected?
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