Any thoughts about the RR-888

I have one. Bought it some years ago. I've tried it in a couple different rooms, with different placements within each room. It appears to work better positioned higher off the floor and in closer proximity to the listener. I ultimately found that I did not like the effect- which seemed to homogenize the sound and take off some of the raw, more visceral aspects of sound reproduction. Other people at the time (it's been a while) never noticed any difference when I would switch it in and out. I'm not sure it is entirely psychological, I actually felt somewhat nauseous when I ran it the first few times. I think it does something, but I can't explain it and wouldn't try to--

I still have it, mounted on a stand at height in proximity to center chair listening position. But have not turned it on in quite a while. Is it even made any more? 

(PS: I know all the above sounds like crazy "snake oil" and I'm not usually a buyer of such things but I wanted to try it after reading some positives about it). 

I have three Schumann resonators, tried all manner of power cords, lps, positioning, number used, intensity of each. These do have effect on sound staging/imaging. I preferred high placement, as with whart away from system. Most noticeable effect was to 'pull' sound stage toward the resonator, best placement using three was up high behind listening position, one in middle, the others rear corners, although in my case no rear wall, listening room opens into kitchen. Over time I slowly eliminated both numbers used and intensity of each. Issue for me was something 'artificial' in the sense sound stage overly focused, individual performers/images didn't have natural placement on sound stage, excessively individualized. For me a combination of strategically placed RPG Skyline and Synergistic HFT have more natural image placement on sound stage. I never heard an increase in resolution/transparency with these, one of the claims for these devices.

I've been using two for about 4 years, a little below tweeter height, and I like the effect. It seems to calm and clarify to me.