Symphony Pro PS-1 Harmonic Resonator. Asset or snake oil?

No email.  
Probably?

Personally, I don’t bother much with tweaks.  My systems already sound fantastic to me.  I would rather spend the money on new music I have never heard before, makes me a little more diverse.  The only tweak I use that really made an audible difference are the GAIA II footers I use under my speakers. 

Thanks all.
To me, it reeks of snake oil... just wondering if, to my surprise, anyone had any experience with such a device.

An asset big time! Easily a major upgrade that exceeds any cable upgrade at 1/3 the price. It adds more clarity and fullness to the sound.
Definitely adds harmonic resonance.

Definitely not snake oil. Just got mine today and I noticed an immediate bump up in clarity and 3D soundstage as advertised!!