Detail Magnifiers by Econotweek

They are a low pass filter not high pass. Their intent is to remove grunge riding along speaker wire which can act like an antenna impeding the best signal transfer from amp to speaker regardless if their quality. RF and the like are generally in the megahertz range thus the low pass design. There are several products out there that do this.

ET

Actually they are high-pass RC filters, easy to DIY on your own. Simply a capacitor and resistor in series. The idea is to high-pass the RF from the speaker cables through the resistor, where it dissipates as heat. There are quite a few threads on the Audio Asylum Tweaks forum with different formulas for making your own. I made mine using cascaded silver mica caps and Texas Components TX2575 resistors, all wrapped in TI Shield and potted in small ABS boxes. I matched the resistor value to the characteristic impedance of my speaker cables for maximum RF transfer. I use one on each end of the speaker cables, between + and - . I do hear a difference in upper range clarity when they are in the circuit.

I now have maybe 20 hours playing time with the Detail Magnifiers.
Best I can describe the improvements thus far is a increase in body at all frequencies. Bass is truly tunefull.
The Vocals sound real and there is a high end improvement that allows cymbals to sound like metal rather than just a splash.
Just been listening to early Linda Rondstadt, wow what a voice!
Ohh Baby,Baby when the sax kicks in it sounds like it is live and in my room.

I have nothing but good things to comment on these Detail Magnifiers. Not sure how they would match up to the Walkers High Def Links, but I would bet on it being really close.

Ozzy, did you go with the upgraded connectors or the cry treatment? Curious, thanks

Scotty333, I actually bought the Walkers HDL Ref + and the Walker HDL III.
I also made some of my own for my home theatere equiment.

As much as I hate to admit, but, the Walker HDL Ref + is in a league all by itself, too bad its so expensive.

I also went ot a solid 9999 14 gauge Silver wire for speaker cables with the Walkers at the end.

Way better setup than with my Synergistis Apex speaker cables , which I have sold.