I don’t know how long this device has been on the market, but I imagine that if it DID make a dramatic improvement in tinnitus, many ENTs would be using it already. I’ve had ringing tinnitus in both ears since the age of 14, and believe me, I’d LOVE to try such a wand. But I would not want to buy one, and I’d need more assurance that it was safe to use (and wouldn’t cause “collateral” damage to other cells) when beamed into my ear.
I recall way back in the '80s when radio host Paul Harvey would promote ginko biloba for tinnitus! I tried those pills for YEARS and … p’haps no surprise, I can hum my tinnitus tone right now if y’like: middle-C with occasional BONGING when the weather changes.