Yes putting my audio equipment all on their own circuit breaker on the main power panel will provide some isolation. That would be enough in some cases especially with a light dimmer on another circuit that I have. I then plug in all of my video and audio equipment into a large single double insulated isolation transformer. That way I avoid ground loops and certain types of AC noise on the line. Any equipment that have motors in them refrigerators, AC, washers and even vacuum cleaners can cause problems with interference in delicate electronic equipment. The motor in a AC unit has to start with a heavy load on it causing a short term brownout due to voltage sag and a inductive “kick back” in the AC lines. http://static-course-assets.s3.amazonaws.com/ITE50ENU/module2/18.104.22.168/22.214.171.124.html
Over time like a few years delicate electronic equipment on the same circuit can fail. That is one of the reasons that large data centers uses double conversion power systems with batteries that can take the entire floor of a large building.
Amps like the LG or my Little Dot VI and the Schiit Lyr uses DC servo circuits due to not using output caps in the design. Tube uses high DC voltages and it is the job of DC servo’s to prevent high DC voltage from appearing at the outputs. LG has protection circuits that will sense a failure of the DC servo control due to large power fluctuations or an internal fault.