Grounding with a Earth box?

@ozzy 
Thanks for that comprehensive answer. Very generous of you to expose the secret sauce that's inside the boxes.
Interesting that the YouTube guy used your design, including the cigar box.

This has been very interesting. So the wood boxes full of crystals and other minerals provide a ground. If you could help me understand it better I know that ground is usually referred to as negative in a circuit but as a zero-volt reference point potential for a real ground. So how scientifically is this box of elements act as a ground? Why these minerals and not just a box of dirt? Do they provide a positive or negative reference?

https://youtu.be/zgqYdq0VgKg

Love Paul’s take on this subject at PS Audio.

It is snake oil.

There is something called a ground lifter, which in a few bucks achieve exactly the same purpose and grounds your system as well as eliminating any possibility of hum arising from ground loops.

It is probably trying to simulate that, but at a price tag suitable for audiophools.

@cakyol,
Incorrect.
Ground lifting and grounding boxes are two different things.

Though I am not versed as to how the other manufacturers connect their equipment, I do know that the CAD unit uses an unused input to connect to the grounding box. This essentially grounds the equipment's circuit, not just the chassis.
B