Did anyone experience Audio Prism's Ground Control

I had a little grounding issue between my VPI turntable and my tubed phono pre.I decided to try the spade ground control.I took them off my amp and put one on the ground at the phono stage and the other at the ground on the vpi table.
I already had a ground going from the TT to the phono stage.I was surprised that the ground control helped the grounding issue,but also added more clarity as well.

I will be leaving them on the phono stage and VPI turntable and ordering another set for the amp again.

So after all this time, I decided to try once again a used pair of the Reference spades for my speakers. 

Its funny because the Ground Control items became all the rage for quite a while then disappeared completely. (including usage by myself). 
I can't remember why I stopped using them and then sold them. Anyone else comment on this ?
Anyway, I decided to try them again on my speakers I should have them later this week.

ozzy

@ozzy 
"But I am not going to try something this iffy for $150 plus shipping costs and then try to get a refund."
A lot has changed in 9 years! 😂

jay23,

Yeah, I agree. Still I wonder about the attraction for these devices.
Has everyone stopped using them or are there those who still use them?

ozzy