MIT Z Stabilizer ll ? operation ??

I haven't found any serious dicussion or information on how this AC power conditioner works.
I can attest that it can be "very" effective in my Spectral based system-in a variety of applications...
I have discovered it is very complementary to some other AC conditioning devices I use; and its benefits are increased by using a better power cord for it.
Can someone clarify what processes are going on in it?
Does anyone know what frequency ranges it addresses?
How would one technically measure its effectiveness?
Could it effectiveness be improved with parts improvement?
Hopefull(but not holding my breath) :)(: