Ground 'box' what's in them?

The boxes conform to the laws of physics, and the laws of the marketplace. What's confusing?

Boxes like Acoustic revive and Entreq contain a mixture of solids, presumably "minerals". The problem is that most homes are inadequately grounded. In Arizona where I live, I'm sure that the outside ground bar is embedded in bone dry dirt. So those three prong plugs aren't really helping your rig to sound better. Some adventurous souls have claimed that chopping off the ground prongs from all the plugs will make one's system sound better. I use Entreq, and I like it in my system.

The Entreq boxes are effective tweaks- they have a beneficial effect, noticeable but subtle. If they cost less than a major component upgrade, I would say they are worth it.

Looks like a worthwhile article. But it can't really be used to judge the value of ground boxes. To do would be analogous to judging an amplifier based solely on its specs.

BTW, the Entreq may decrease noise as an added benefit, but that's not really what its about.

Agree. The tendency to defend one's purchase is there.