I will say, I am not a cool aide drinker, never have been. In fact, I am the guy that looks to refute the popular norm. Particularly anything that might look too good to be true. After researching the SG, it seems to have some veracity. Not only in the musical realm, but in life. In my case, on... sounds like x, off sounds like y. It just DOES. Here is the rub, a doc friend of mine once told me, during a conversation about glucosamine, that it didn’t matter why it worked. If one were to take it, felt better, then that is all that matters as long as no harm was being done. He wasn’t a fan personally, but he recommended it to his patients, as the majority seemed to feel better taking it. Purely anecdotal, but the result spoke for itself. So, the placebo effect is real, and if the SQ is complete BS, but still makes YOUR system sound better to YOU, what’s the problem? In a world of $50,000 speaker cables etc, a little $20-40.00 gizmo is nothing. Worth a shot. YMMV.