While reading up on a new Clones music server I linked to their site and discovered that Funjoe has his version of a Schumann Resonator. He recommends a height of 5' and close placement to the listening position.
So I took out my Quantum version, which I've kept close to my system, in the rack, and placed it on a CD cabinet close to where I sit (about 1 yard) and it's 4' off the floor. What a difference it made. Much clearer presentation with better separation and a surprising increase in bass definition. There are real fingers plucking and pulling on those bass strings. It's really easy to hear the difference. Even the highs were better defined. There's a moment in a familiar recording where there's this shiny kind of shimmer, high up in the register, that turned out to be some very rapid high end piano key strokes, struck very softly. I can clearly hear piano foot pedals being engaged, sustained and released, when previously they just had a soft, thumpy impression of being used.
With the older placement, I heard only a slight improvement. Goes to show that I should keep up on things like this. Anyway, I was so impressed that I went and ordered one from Clones Audio and it's even better than the Quantum unit. Much better. It has a slight buzz that you can hear with your ear close to it while the Quantum unit has a more aggressive buzz. Being a much older device, it might be on it's last legs. The Clones device is also less than half the price of the Quantum unit, delivered from China.
I put the older unit in my bedroom to see if there's any benefit and if there is, then there's going to be another Clones unit to order.
All the best,
Nonoise