I have treated just my IC's and speaker cables, with Frank's help around one month ago. I have not yet pasted my power cords.
I think all of these tweaks are beneficial to certain degrees. My system was pretty resolving, but now that this tweak has 'burned in', I too must respond with positive comments about a 'lifting of a veil' of digital grunge, more open sound stage, better detail, and more accurate bass. The question now is how dramatic....I wouldn't say I was gobsmacked with improvement like say from a component upgrade, but everything in this hobby matters, and for the price, and the minimum effort involved, it helps me enjoy the music more, and listen to my gear less. It is clearly a definite improvement, more than subtle, but less than big bucks change up in gear. I would say its on par with the improvement I noticed by adding the SR black fuses to my gear...so slowly, and steadily, I am adding to sound quality, and enjoyment.
I will try to paste my PC's soon. I have tried the product, and found it to be a positive improvement. I hope my comments will not result in attacks, as I am trying to be fair and balanced in my review and results.
I'm glad Frank has brought this new product to my attention, I would not have tried it otherwise, and missed an easy tweak with positive effects.