I too can credit Mr Magister for turning me on to these guys. I bought 2 and must admit I didn’t expect much. Literature seems to emphasize the "calming" effect. I can attest to that. Improvements in SQ are very subtle and I would hate to predict anyone’s result. I can tell you that they definitely aid my sleep. 2 weeks now with one of them in my bedroom and I think it’ll stay.
Schumann Resonator
I got 2 of these from Amazon...careful that free returns are applicable. I charged them up, turned them on and holy moly.....they do help with my system. What I hear is clarity....space between instruments, a definite difference in upright and electric bass, wider soundstage...you know...all the good stuff. At first I thought it might be increased brightness, but no....it is still the same in that regard. I still can't believe it, and will listen again tomorrow (saved the packaging for the return)...but today, I'm about to keep them.