An update on this. First, i went to that site and boy, there were a lot of people from UK saying the thing didn't work for them. I almost backed out when I got the bill for $4,500. But then decided to go through with it and today was the appointment to get the device.
While the doctor was setting up the machine, I asked her about the negative outcomes in UK. She said that the roll out in both UK and Germany totally failed because they allowed any and all people to sell it. With no training, screening, etc., they wound up giving it to everyone with some people not getting good outcomes. It is for this reason that the company decided to only allow a dozen or so doctors that had specialty dealing with Tinnitus to handle it in US.
I asked her what her success rate had been. She said she was allowed to start people in May of this year and so far, the success rate is 90% -- inline with the trials. She had flown down here for people in this area. I asked her how many appointments she had and she said 13! Pretty big number for something like this.
She used a PC to calibrate the device for level of electrical excitation and volume. Audiologist report was used to program the latter. At first the level of the tongue excitement was so high it almost burned a hole in it!

She dialed it down and said that it does not at all need to be uncomfortable. The sounds out of the machine is light background music with a set of tones. The tones get louder and fainter and correlate with increased and decrease in tongue electrical excitation. A decent quality bluetooth headphone comes with the unit. Each cycle of treatment goes for 30 minutes but you are supposed to do it 60 minutes per day (together or separate).
I have not yet tried it as I just got home. Have a 2 week check up with her.