ground control devices

@sksos 

How do connect these units? Do they connect to your components only, or do they connect to the components and the mains? Thanks.

@sksos

To confirm I understand correctly; the grounding box is connected to a component (DAC, amp, whatever) via grounding post, or other grounding (single wire).

The grounding box is NOT plugged into the mains - i.e. it is a passive device.
The component (DAC, amp, whatever) still uses a regular 3 prong AC cable meaning the component is still connect to the mains ground.

Question; have you ever used the device and while the ground from the mains is disconnected from all your components? 

The reason I am asking is I use batteries and have no mains ground. When I connect to mains ground, I pick up noise. For safety reasons, I’d like to have mains ground connected. I’m wondering if a grounding box would allow me a connection to mains ground w/o the additional noise.
Thanks.

@sksos 

I'm on the east coast however I am not (yet) interested in trying a grounding device. I am in the middle of a number of upgrades so my ability to discern the contribution from a specific product is probably close to zero. 

I am interested in how these devices work and how they are to be used,  as I believe it's worth pursuing once my ears adjusts to my "new normal".