Idk if your government is functioning properly, but the production of and shielding against “electrosmog” is properly regulated in most counties. I believe that would be the FCC keeping things in check in North America. It’s called electromagnetic compliance (EMC) in the sense that it complies with regulations.
“North America”? Like the FCC has something to do with Canada or Mexico? Please tell me that the education system in the Netherlands taught you that the United States isn’t the only country in North America. You’re right about the regulatory stuff.
Idk, you tell me, after taking a chill pill. FCC regulations are relevant to more countries than just the US of A. For example, the FCC regulations are used over here as a guideline for the EU regulations.
Get your facts right. Lumping Canada in with the United States is casually sloppy and more than a little offensive to a lot of Canadians. The last thing anyone needs is to read Europeans getting it wrong. You're supposed to be better educated than that. No offense meant to my relatives in the U.S., my research associates in the U.S., or my friends in the U.S., and besides that, they all know how I feel about the subject anyway. No, they're not used as a guideline for EU regulations, but rather only part of the EU's due diligence at any given time. Many countries and many trading groups, the EU included, consider (through due diligence research efforts) what other countries are doing in order to more fully cooperate to produce cogent guidelines and laws of their own arising from agreements made at international meetings and summit conferences. FCC regulations are frequently considered by other countries... and sometimes found inadequate and sometimes found adequate. By no means does the FCC set the standard for the rest of the world, nor is the FCC necessarily the first choice for study or research by other countries. In Canada, the governing authorities cooperate with the FCC and the FCC cooperates with Canada but in no way are associated Canadian regulations guided by the FCC . It is a matter of fact that the Canadian and U.S. regulators regularly face each other in court over accusations of regulatory overreach, regulatory conflicts, spectrum auction disputes, and a dozen other issues. Even the mere concept of the FCC having aegis over Canadian regulations is offensive. Be accurate.
The EU EMC regulations that date back to 2014 (no updates have been made AFAIK), were more or less a copy/paste of the FCC regulations. The FCC basically defines the regulations in other parts of the world. That’s probably even more so for the IC regulations. There’s no need to be pedantic or even offended for no apparent reason.
This is actually my set up (Puritan RouteMaster), except that it uses ferrite instead of copper. The issue is that hardly anybody grounds their signal grounds.
As a first course of action I would heed what has been previously said in this thread. Get a common ground composed of relatively well conducting metal, copper springs to mind. After that if you really have EM noise, or digitizing noise, it becomes more difficult. That is where companies like the one you have referenced can step in to take your money. Any electrical engineer worth his or her salt will readily admit that removing some sources of noise is a bit of a black art. But if you don't hear it, it isn't there, whether or not you can show it using analytical methods. Mains lines are subject to noise, independent of the quality of your grounding scheme, if you are ultimately grounding to the mains. And depending on the first step of your amplification, if there is an antenna present in the chain, you have to isolate that and eliminate it. There is no magic pill however, that I've been able to find in any case, that definitively removes these sorts of noise, and that is pretty much what I do for a living, achieve strong signal to noise ratios in amplification chains.
Thanks for pointing out that the signal ground should be separated from the mains ground! This is also the reason that Puritan Labs says that optimal results are achieved by routing signal grounds to the star ground from the ferrite (from my RouteMaster) ultimately through a long grounding line to a grounding pin that should be put as far as possible from the mains entry point (e.g using their GroundMaster). Would common grounding through copper only and back to mains ground not be a safety hazard in case of a short circuit? Radiofrequenties - and electromagnetic interference (RFI/EMI)that is present almost everywhere, but that does not seem to be main problem for inducing distortions. According to Gabriel Tech. the electromagnetic fields that are generated by your own stereo components and peripherals, like transformers, switching devices, displays, computer etc. can be a problem due interference of these fields in and around your components. These field interferences could be much stronger than the general RFI/EMI given the small distance to sound signal.
And here I was thinking before clicking on this thread Electrosmog was a band. Good name for one regardless.
I have read about that HF distortions can cause solid state devices to go into clipping, but that external radio interference blows up an amp, wow! Good story!