Experience with Novum PMR Mk 2 bronze resonator?


Made in Germany by Highend Electronics, this item has had very good reviews going back a few years now. How would owners describe its virtues? Thanks!
Convert?fit=crop&h=128&policy=eyjlehbpcnkioje1mdgzodyyndisimnhbgwiolsicmvhzcisimnvbnzlcnqixx0%3d&rotate=exif&signature=ccf46bdca3c3991c82ac272801e46553a3bf7b4fcf8f1f6dd55c84a2675c9905&w=128jafreeman
Old thread
I wouldn't trust those reviews but I'm curious too...
Does it really work? Can you justify its cost ($2500 per piece)?
Or just another snake oil?
Can you actually use guitar cone resonators ($10 per piece) for that purpose?