Manufacturer's Description:
Looks like a standard power cord except its not standard at all.
The 14 gauge wires are surrounded by a special ferrite compound to improve its ability to reject noise on the AC line.
This product is pretty unique in that it is a filter of high frequency hash found on AC Lines today.
It is not designed to replace any of the filters we produce... however it is a significant improvement over using nothing at all and does not cost as much as a high end conditioner