Any thoughts about the RR-888

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.

I’ve been using two Schuman resonators (one atop each speaker) and a box of Synergistic Research HFTs strategically placed around my listening room for years. I had serious doubts regarding the effectiveness of the HFTs since my listening room is heavily treated. I am glad that I was wrong. Still use a FEQ as well.

I’ve tried many tweaks through the years.

Thanks for all the info. Really appreciated. 

Do two make any difference vs one? When you operate two, are they connected in some way as to be in phase with each other? If they are in phase, does that matter, and how? Is this a subsonic "noise" reduction system?