The Susan Shore device is open source via studies and publications and it's possible to build your own if you're desperate enough. DM me if you want exact hardware specs. I've gone down this road because I have severe tinnitus.
I'd be interested in getting your specs on the Susan Shore device! How can I DM you? (Doesn't seem like we can do this in Hacker News). If you'd like, you can email me at peterjoh.pub@gmail.com? It'd be much appreciated. Thanks!
The results are very promising, but it's sure taking its time getting approved.