I have no opinion on Lenire.
The University of Michigan device significantly reduced my tinnitus after 2 weeks of use with no negative side effects, and it stayed significantly reduced for the two weeks which I continued to use the device. It was confirmed through objective volume matching in a sound-proof room at the UMich lab, that the actual volume of my tinnitus (and that of a number of other test subjects) had been reduced. The initial study was small, but double blinded, and the results were peer reviewed after aggregation before I was told anything (and are all very available now, if you look through Pubmed / scihub).
As far as "how" bimodal is supposed to work, there's really no mystery there either, because this was developed as a ground-up technology, meaning they induced tinnitus in animals, observed specific neuroplastic changes in a particular brain region, and developed a technology to (temporarily) reverse those changes by exploiting what we understand about spike-timing dependent plasticity.
This video is six years old now, but is still the best thing I have found as far as explaining what this stuff actually is and how it works
Note that when this video was recorded, this had only been demonstrated in lab animals. In 2014 we had a "phase zero" preclinical work where a bunch of lab techs with tinnitus who happened to be involved with the lab, zapped themselves with the device and said "yeah we think this works, let's do a phase I", and then a phase I was conducted.
The conclusion of the phase I, in general was:
* no one was harmed
* some people showed no benefit as measured by a reduction in tinnitus volume or self-reported annoyance
* some people showed a moderate benefit as measured by same
* some people showed a significant benefit as measured by same
Unlike Leniere, I do not believe any of the UMich Phase-I people said their tinnitus "went away". Also unlike Lenire, the overall response rate and overall impact is more modest. Also unlike Lenire, they have published real papers that show some of the sausage making behind their little aurdino beep zap box, which makes me think they're more likely to be operating in good faith than Neuromod, even if that is hardly a guarantee of success.
Here is UMich's Phase I:
https://www.ncbi.nlm.nih.gov/pubmed/29298868
7-8 dB average actual volume reduction as measured in a lab is nothing to sneeze at, that gets close to halving the volume (which more or less aligns with my experience).
I have no idea if this thing will work for you, or any other particular person, but I do know that if someone offered me the experimental device I used in the trial tomorrow for $15,000 -- I would loot my savings/retirement as needed without blinking. On the other hand, I have thus far resisted the urge to try Lenire for a third of that money.
Didn't even realise you were in the Michigan trial too.
Only person I know is @kelpiemsp.
I know you said you used the device for 2 weeks and it reduced your tinnitus. Did it reduce it even more after those 2 weeks?