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Grounding boxes which ones have YOU tried? And results?

Just curious have never tried the many grounding devices that can be found on the web from companies such as: Synergistic Research, TELOS, Entreg, Nordost - QRT, Audio Magic -Blue Dot Eliminator, Signal Ground Solution or many DIY. Do they do what is claimed? Are they worth the $$ which are from a few hundred to many, many thousands! Which units have you tried/used and what were your results?
rsf507
ebm
9,311 posts
 
I'll pass on these boxes too much money  not enough improvement.
68pete
1,005 posts
 
I have tried the Synergistic block with their HD power cord up grade and was very disappointed.
millercarbon's avatar
millercarbon
12,531 posts
 
Pretty sure I have one of those in a box somewhere, along with a bunch of other stuff, just sitting there waiting for when I can find the time to hook it all up and listen.   

In the mean time, there are so many different things going on here I cannot even begin to tell you. 
tommylion
874 posts
 
The Gutwire grounding cables for individual components are another approach. I currently have Ultimates plugged into my DAC & pre, and they work well.

https://gutwire.com/products/ground-cable/
jdane
183 posts
 
Chayro--Thanks.  I'll try it.  
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