Does anybody here have any experience with the HyScore 6 channel e-muffs?

Mixed reviews for sure, but the idea is sound. I like the 31dB attenuation rating, as it's better than my standard muff rating of 29 on my Silenzio Magnums. I always double up with plugs, so I'm starting to feel a need for electronics to heighten the normal sounds. Anybody here own them or hear anything about them?