Sorry for the delay... I tried changing the resync with no luck.

It's doing my head in! The sound is heard whenever the speakers are fed a signal, like changing track or volume. If Roon and 218 are just left playing one track after another there is no noise. But anything that causes data to be interrupted and started again causes the noise.

Dollar2 suggested daisy chaining however that didn't work either... Does anyone know how I can check what firmware the speakers are running?

Finally the proud owner of a 218 and 3200's... Will they grow up to be an 818v3 and 8000 se's???
Isotek Sigma Evo 3 power conditioner