Just wanted to post my positive experiences with the Shunyata Dark Field Elevators (DFE). As like many others, at first I was quite skeptic that something that resembles styrofoam inserts used to pack materials for shipping can possibly improve audio performance. Well, I am glad that I took a chance and bought the DFEs.
Right out of the gate after putting the DFEs under my speaker wires, I easily noticed an improvement in clarity and focus. The background is a shade or two blacker and nuances are easier to discern. More of a cleaner sound, you can hear into the music much easier and follow along. More apparent on recordings with complex passages like when lots of instruments or vocals going on. The DFEs were able to separate the different notes and vocals cleanly thus letting you hear what's going on instead of a bunch of noise coming at you. I heard all this without ABing, because it was that apparent.
I have carpet in my audio room, perhaps the DFEs got rid of the static build up or what not. Whatever the reason may be I don't really know and I don't care. For such a low investment compared to many other things in the audio hobby, it's a keeper. The DFEs really work, not hype. Hope this helps others who were in the same boat as me when pondering about buying these or not.
Cheers!