I use isolation transformers from Plitron. They sell directly to the public. The hospital grade units require their own electrical boxes, and may require a specialist electrical inspection, depending on your jurisdiction. Plitron also sells stand-alone boxes, which I have not tried.
I protect everything with Plitron units (3 of them). I found that special cords or other power accessories were less important than the Plitron.
A word of caution though - when they are doing their job, they tend to growl, so it’s better to site them away from the listening room. And pay attention to grounding. I suggest having a pro install them.
I protect everything with Plitron units (3 of them). I found that special cords or other power accessories were less important than the Plitron.
A word of caution though - when they are doing their job, they tend to growl, so it’s better to site them away from the listening room. And pay attention to grounding. I suggest having a pro install them.