I tried the Levo System. Personally, I think it is a scam. It's way overpriced, costing thousands of dollars with only small clinical studies to back it up. The so-called FDA approval means only that it's safe and NOT that it actually works. All you get is ridiculously simple software, "specially designed" nighttime earbuds, and an iPod Touch which runs the software. The audiologist programs your tinnitus sound to it with you in their office and you take the iPod Touch home and listen to the sound while you sleep. It did nothing for me and I used it religiously for the full trial period which was a month. Luckily, I was able to get my money back minus a 10% restocking fee. Believe me when I tell you that the wonderful people at Otoharmonics gave both myself, and my audiologist, an extremely hard time about returning my money despite a clearly written contract. Fortunately, I did at least have a trial period. The problem with Levo is that the concept is not new, it's crazy expensive for what it is, and it only deals with one sound. What if you have multiple types of tinnitus sounds like high pitched, whooshing, buzzing, or crickets, like me at different times? It doesn't even address that. Worse still, the software on your end can only control volume in each ear and you have no ability to change the types of sound on the fly. Those changes are only made in the audiologist office. Look, I understand the desperation behind tinnitus, I myself feel that every day, but realize that there are a lot of people out there who also know this and want to use it to get your money. Could Levo work for you? Maybe. I suppose it may be worth a try. Heck, I would try anything, but why not try notch therapy first and see if that helps. You could search Google for info. There are lots of sites that offer it. There are even lots of Apple or Android phone apps that offer it for free. There is even a hearing aid, the Signia Primax, that offers it as part of the device. The use of any hearing aid may actually help Tinnitus even if it doesn't have the notch system. Hearing aids are, unfortunately, a perfect example of how the audiology field rips off its patients. Those devices have astronomical markups. At least hearing aids actually do something for your money though.