Interesting. I thought the SR devices do not affect the sound or the listening environment, they only relax the listener so the music becomes more enjoyable.
Don't know about others but somewhere in my comments I made clear this is not the case. If they were somehow affecting me then everything- not just the stereo but voices, people talking, every sound in the room- would sound better. That is not the case. All the other acoustical treatments do affect all the sound in the room. Not just the sound coming from the speakers. All of it.
This is a good example of how to think a problem through and solve a puzzle logically. If it is an acoustic effect then it will affect all the acoustics, not just what is coming from the speakers. This is not the case. Everything else sounds the same. So it can't be that.
If it is a psychological effect then again it would affect every experience of sound. So again everything should sound better. But it does not. So it cannot be psychological.
The device does emit electromagnetic radiation. This is the whole purpose. All the wires in the system are functional antennas receiving radio waves. This is not news, RFI is real, so no new information there.
Dither is a noise that when added to a signal actually improves the perceived quality of the signal. If this sounds unlikely please take a moment, pause, do a search. Dither is used in video, has been for decades.
The most likely explanation I know that fits all the facts is a Schumann generator adds dither, and this improves our aural perception of sound the same as it improves our visual perception of images.