I think that is unfair. Audio reproduction is a science: there is a known input and one wants to see as much as possible of that at the output. As such anyone wishing to have a controversial new product taken seriously really needs to have it impartially evaluated. I haven't read this thread in it's entirety so don't know whether or not this has been done or not. If not, and all favourable comment so far is based on non-blind listening tests it is seriously unwise to rule out the placebo effect. This is not meant to be offensive to anyone. It is simple fact. I've been caught out many times as has everyone I know (well all the honest ones at least).

If we get to the next stage, i.e. we have actually ascertained there is a real and repeatable difference then that difference needs to be analysed and understood. This is the time to ask what exactly is the device doing to the listening environment? I am an atheist - I can safely and confidently rule out magic, gods, witchcraft, voodoo etc. This only leaves us with reality. If it works it has to be emitting something (other than blue light!). My personal guess would be HF noise and this could comparatively easily be measured.

Tony.