@david_uk_22
Yes, that is the perspective I'm engaging on here. Therefore, as it applies to network switches I'm mainly interested in the noise reduction they are applying to the power supplies for example as a potential source of noise and unrelated to the digital signal. I see many of the models that the OP provided at the beginning of thread did include measures to reduce EM/RF noise but for now I don't think those incremental gains justify the costs - at least not in my realm of budgets and a value proposition.
Ah I think I get it now.
You are saying that adding an extra piece of equipment, a switch or anything , is adding further potential to add noise to your audio system. Nothing to do with the digital audio it is switching.
Yes, that is the perspective I'm engaging on here. Therefore, as it applies to network switches I'm mainly interested in the noise reduction they are applying to the power supplies for example as a potential source of noise and unrelated to the digital signal. I see many of the models that the OP provided at the beginning of thread did include measures to reduce EM/RF noise but for now I don't think those incremental gains justify the costs - at least not in my realm of budgets and a value proposition.