Did anyone experience Audio Prism's Ground Control

Already having Reference GC’s on my speakers, I purchased a second pair of Reference GC’s terminated with RCA’s to try them on my amp (I run XLR IC’s leaving the RCA inputs open). When I didn’t notice much improvement with the GC’s on the amp, I moved one of the GC’s to an RCA input on my JL Audio F112 subwoofer. When I initially set up my sub, I painstakingly followed Jim Smith’s advice (Better Sound), and that worked pretty well. I found however that taking just 2 seconds to install the GC on my sub was the preverbal icing on the cake that pulled everything together. These GC’s are pretty amazing.

It’s said that mixing the Reference GC’s with the “regular” GC’s improves the soundstage. So my question is, is it possible to buy GC’s that are terminated with Banana Plugs that are not terminated with the Reference Banana Plugs?