Value of a 'ground filter' ?

Agreed...I use them with other products in the electrical and grounding chain, not instead of.

Thanks Zepher, will do and follow up. ZD I'm thinking they make be beneficial ahead of other conditioners, not in place of.

They defiantly look like they would be worth having. A question I have is, can you get the same results with a traditional line conditioner or regenerator?

See my posts which mention use of the waveform regeneration and ground filter devices since last June/July. They are well worth the expense and time and deliver great sonic benefit. The ground filter does a great job of filtering out the additional noise and shite and helping the noise floor on a system get even lower. Check my system thread and the other threads where I've posted for more detail...