Güth Wolf Resonator Cello e - f#

This has saved me from my daily wolf challenges.
I have tried a lot of cello wolf eliminators that are attached on the strings.
They all work fine, and diminish the wolf. But at the same time also muting the instrument a bit, and somehow simply spreading the wolf tone out on one or two other tones.
This 'Dictum Wolf Resonator' just works perfectly. The overall resonance of the instrument is intact, and the wolf is gone without affecting other tones.
You have to move it around on the cello to find the right spot. The detailed instructions that come with it explains.
I wish I had bought this one in the first place even though it cost a bit more. It's really worth it.