A summary some of you may find useful.
Dr. Susan Shore's DeNovo device is developed under the umbrella of the University of Michigan. It's a neuromodulation signal timing device treatment to reduce the tinnitus volume.
Susan Shore's treatment is based off of the circuitry in the dorsal cochlear nucleus (DCN) in which somatosensory input is integrated with auditory input to produce long term plasticity in the DCN fusiform cells. Their treatment harnesses this plasticity by generating a somatosensory stimulus. This is an electrical stimulus that they either put on the cheek (trigeminal) or on the neck (dorsal column). This stimulus targets the hyperactivity of the fusiform cells in the DCN that generate the tinnitus, to induce long term depression.
Visualizing Tinnitus in the DCN:
Depending on how you can modulate your tinnitus the stimulus will be applied on the neck or on the cheek. To be clear, for this to work well you most likely need to have a tinnitus with a somatic component.
There should be clinical trial results published somewhere in 2020.
Tinnitus Hub recently interviewed her at the Tinnitus Research Initiative. She's been working on it for 15 years already and has tinnitus herself.
There are some informational videos on youtube on her research. The Neural Bases and Neuroengineering of Tinnitus (old video) for example. It really shows that she is really dedicated to tinnitus research and has advanced a lot into understanding the pathology of tinnitus (see fusiform cells in Dorsal Cochlear Nucleus).
This article refers to the results of her initial trial:
Auditory-somatosensory bimodal stimulation desynchronizes brain circuitry to reduce tinnitus in guinea pigs and humans:
https://stm.sciencemag.org/content/10/422/eaal3175
The interesting bit is at the bottom of the article: "Tinnitus reduction reached an average of 12.2 dB in the fourth week of active treatment. Of the 20 participants tested, 2 reported complete elimination of their tinnitus toward the end of the active treatment period."