Audiophile-grade ground rod?

@lowrider57

Yes, I did watch the video. It was pretty interesting to watch.

I don’t think I’ve ever seen Cadwelds (Trade Name) used in residential for connecting the ground wire to the ground rod. That welded connection is forever.

One thing for sure Fremer was ready for a new electrical service. Did he say how old the house was?

There are some DOD research papers on the web somewhere, have not read them for years. Then there is the Ma Bell triple point grounding system. Even water table management is going to be required. Then you start getting into a rub in that the earth can become a source of noise in your system. This where a local knowledge of the geology of the area needs to be taken into account. Best bet is to find out what Ma Bell and Sprint did in your local area and work from there. Survey says...

Best bet is plug your stereo into the wall and enjoy the music.

@lowrider57
Thanks for the Fremer link which describes the solution to his major audio quality degradation after installing an external electrical generator for power outages. Learning a lot of useful info.

You want a low impedance path to ground and that isn’t easy to achieve. I’ve wondered how you can get around this. Multiple grounding rods should help.

Make sure that if using multiple rods, the scheme should be designed a single point ground - which IIRC the rods are connected in series vs parallel, otherwise the noise will be going from one rod back into another rod and a lightning strike may create an EMF impulse to fry your electronics.

Additional electrical and grounding rod info:
https://audiobacon.net/2019/12/14/how-to-wire-your-home-for-hi-fi-tips-tricks/

Project ground for billionaire audiophile.
The Earth's core is thought to be iron.  Iron is a pretty good conductor.
All that is necessary to reach it is a ground rod about 3000 miles long (and a big hammer).  This will be an excellent ground but will probably melt because of the high temperature down there.  So you will have to keep on hammering.

Perhaps more practical...
1.  In another topic I suggested a separate earth for audio system circuits to remove earth loops with other circuits powering noisy equipment

2.   If ground is dry around your ground rod, water it every few days or install a drip feed.