I use 10 cheap USB Schumann generators linked with my thin "golden" plates on the usb platform (shungite + copper tape on one side+ tourmaline or Herkimer diamond) the results is not small and transform the acoustical perception of the room space and improve even the timbre of instrument not only the imaging....
FEQ and Schumann Devices
According to Synergistic, you should not use their FEQ in conjunction with any Schumann generators. I love what (2) Scumanns bring to my room and have not tried the FEQ due to this. Has anyone else experimented with both technologies?