Walker HDL's worth it?Anyway to replicate cheaply?

They may indeed be snake oil, but I think they are definitely worth it at the used price. I installed a pair on my Audio Physic Libras, and they made a noticeable difference. The noise floor was lowered, and the background became 'blacker.'

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.

I got the Ultra Hi Def links, and I think they are fantastic. It is really noticable and depressing when I remove them. I thought they seemed like a real rip off being really homemade looking. I asked my dealer about them and he said believe it or not there is a lot of expensive parts inside those wooden blocks. I don't think you can replicate them for 5$