I tried them and I like them. It does not sound like a capacitor. That would take away detail. It sounds like a super high frequency attenuator (filter network)--just gets rid of some noise, that you don't even really hear, but the music comes out with a little more detail and a little smoother at the same time. I also think the measure is very incremental. While it works--there are probably a lot of other things out there that should be considered first. If you've done all the other tweaks, then give these a try (used market $ of course). If you don't find they help you can probably resell them for what you paid for them.