[quote="bottleneck, post: 730690"] If I have the right person, has Russ Andrews hired a manufacturer of hifi mains related products to provide independant evidence that these products have effect?[/QUOTE] That about sums it up. For the record, I use some expensive (to me) mains and speaker cables along with IC's. That is my choice as I felt it a worthwhile upgrade. I am very aware of the lack of supporting evidence for such items but felt it did help my kit. To that extent I feel that any claim by a cable manufacturer should be backed up with solid unbiased evidence. Fine for adverts to use testimonials of customers but claiming something as a fact should have solid evidence behind it. We have seen no such evidence in this thread, just one mains/cable tweaker supporting another, with one as yet unsubstantiated peer review? IMO this kind of behaviour does absolutely nothing to help the cause of cable suppliers whether they be genuine or not.