Probably not such a simple tweak really. Just does a number of things with the least amount of stuff. You really should buy one of the $150 sets and test it out against your DIY item, just to make sure you have all of the benefit. Not dissing your efforts at all, you have just left out aa couple of descriptions of the changes wrought by the full package. You can always return them, claiming lack of change....
I do find it very interesting to discover just how good the equipment we have really is, once the back half of the wave form is properly supported. Neat to know that even Red Book audio, out of a cheap Sony CD / SACD player, can sound wonderful and that a Nikko Beta I SS preamp from the 80's is an incredibly delicate and nuanced preamp, not the hissy, hashy high end, thing that most people find with them. You really do need to explore the RCA Ground Control devices.
Bud
I do find it very interesting to discover just how good the equipment we have really is, once the back half of the wave form is properly supported. Neat to know that even Red Book audio, out of a cheap Sony CD / SACD player, can sound wonderful and that a Nikko Beta I SS preamp from the 80's is an incredibly delicate and nuanced preamp, not the hissy, hashy high end, thing that most people find with them. You really do need to explore the RCA Ground Control devices.
Bud