I don't see any resolution to this argument. As so often on Audiogon and other forums, it comes down to one opinion over another. You can legitimately argue as to the scientific validity of a companies claims and I certainly am not qualified to comment on the validity. I have a tenuous, non scientific understanding of Quantum mechanics, string theory etc and I suspect that is true for most of us.
Whether the "science" seems Kosher, is certainly relevant to whether it works or not, but not a deal breaker. I believe the Nordost QB4 works in my system and 2 works better than one. To my ears, the benefit is instantly recognisable and worth the cost. The cost to me was half price, second hand. I think it worth that, not the current full price, which seems far to high for the material content of the product. You can argue I am fooling myself, but it's all rather futile. The only way is to get a loaner or by second hand, so you can sell on, hopefully at no loss and try yourself
Whether the "science" seems Kosher, is certainly relevant to whether it works or not, but not a deal breaker. I believe the Nordost QB4 works in my system and 2 works better than one. To my ears, the benefit is instantly recognisable and worth the cost. The cost to me was half price, second hand. I think it worth that, not the current full price, which seems far to high for the material content of the product. You can argue I am fooling myself, but it's all rather futile. The only way is to get a loaner or by second hand, so you can sell on, hopefully at no loss and try yourself