Well there is a comparison to the Audio Prism Ground Controls , but these sticks have a much larger effect.
I stopped using the ground controls when I installed the BSG Qol unit.
I tried all of the Akiko sticks. All of them had a effect, but all of them together on the same circuit seemed to be overkill.
The Universal sticks were added to my speaker cables and/or interconnects. They were very similar to my Audio Magic speaker clarifiers but at a much reduced price. Although I preferred the Audio Magic.
The AC units were too much for my taste. Again, with the BSG QOL it didn't improve the sound.
However, I did keep the RCA version because it added that extra clarity to my DSPeaker unit that powers my JL Audio subs.
Your mileage may very. I would say that they are good tweaks to try.
Jaguar Audio sent them to me. I had to pre-pay for all 3 versions. They were shipped fast. I returned the AC and universal sticks and I should get a refund soon less shipping and paypal fees.