Schumann Resonator

This is nonsense, unless you can come up with a real explanation.  The green stripe around CD;s had an explanation as good as what you folks are saying, and it had its adherents.  Hydrogen atoms?   BS!  Hydrogen is so light that absolutely none of it hangs around in your room, or near the Earth's surface.  Please do better.

bhvf nailed it

I had in my gray matter somewhere 7.83 hz and the above site explains it.

said that because before investing many hundred dollars for nothing, if your room and gear is not prepared enough with a too high noise level to be able to give to you some audible effects, at least you will lost nothing buying 2 cheaps one at 10 dollars each before buying a very costly one..

The effect is audible but not in all conditions...


These devices don't do anything for your audio gear or room, they make the person more in tune with the frequency of the earth.

There is an assumption that some of the desirable qualities of a good system are not measurable. I wonder how someone from my world (research and statistics) would try and tackle that.
Take one quality often cited as unmeasurable but highly desirable and strongly influenced by cables / resonators / power supplies / fuses : soundstage.
Why not play 100 people a track and get them to draw what they “see”. Like this.

Then bring the Schuman device or whatever into the listening room and ask 100 different people to listen to the same track and do their drawings.
Simple statistical analysis of the two sets of drawings would reveal if the soundstage has become wider, or if the instruments are more distinct in their position within it. The same drawing would also reveal “clearer deeper bass”.
Be fun to try, anyway.

Never respond on these forums, but do use lot of tweaks.
Near-live main system, will keep up with Raidho 35K speakers when testing same cd at Axpona (at least on clean cds),
Projector based home theater system, good to very good, but not great

figured should reply for mapman and others
Bought AR-888 few years ago, demo, so trial from MD, the large online seller. Curious due to positive reviews, and to date the most expensive tweak ever bought.  Had DirectTV then and tried out ARROW show. Put the AR-888 on a cabinet (maybe 4 feet up) at back of room. Was shocked to hear much more details in the sound of the show. Turned out ARROW was far more complicated mix than I thought. Also turns out it helps the picture quality. Have tested on 2001 movie (pretty clean bluray, not grainy like 2010). Can see more 3-dimensional image and more vivid colors. Is definitely more pleasing to watch with AR-888 on. Whenever I have tested it, can usually tell improved sound and picture quality.

Do not use on main system. Have tried and was better separation of images. But heavily boosted the bass. Small room and had to turn down sub too much and I like the sub effect. If can counter that, may use AR-888 someday again. Not hard to move if want.

Is strange and not sure why works. Low frequency EM signal, doable if look at half price Indonesian Chartes V (wish knew about that one to save money) due to electronic trace circling inside around and around to get large EM wave. Chartes V does show sine wave. Expensive ones claim to be more accurate. Not sure about cheap ones; tend to like trial periods. Tempted to get a second like Chartes V sometime, but read one review where tried 888 and previous model and person got nauseous. 
Again, perhaps the oddest tweak I have and not sure at all why works, but it does work. If you can get cheaper and still works, clearly that is best.
PS have even suspected it helped when listening to a quality DAP recently, but would have to keep testing that, since surprising