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Upsamplers, DACs, jitter, shakes and analogue withdrawals, this is it.

You need the proper materials.

The Power Wraps are not simple copper wire. All I know is that they are attracted by a strong magnet, and copper wire is not. What I'm told is that the minimum order for the proper material is very large, so it is not practical for simple folks like us to make our own.

The effect is to dampen a standing wave, that, because of the short length of the power cord, is at a "radio" frequency. A low-resistance conductor in the same shape simply rearranges the shape of the standing wave, and may shift its frequency slightly, but it does not dissipate the energy in the wave. Having a material that has higher permeability and some resistance helps by concentrating the magnetic field part of the standing wave, and dissipating the energy in the wave through Ohmic losses in the circulating currents induced in the Wrap.

The designer is an experienced aerospace engineer, and these are not snake-oil based devices. The only reason they require some fiddling to 'tune' them to the power cord is that they were made small to keep them cheap and make it easy to attach them to non-detachable power cords.


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