@Cityjohn Okay, now I am confused. Is PQQ good to take with tinnitus and hyperacucios
Yeah it confuses me too sometimes

Let's sum up all the facts;
1. PQQ is the key chemical that enables the body to make more mitochondria.
2. When nerve damage occurs along the auditory path in any of the synapses, the mitochondria are depolarized (inactive) and thus unable to power repair.
3. Neurons do not contain many mitochondria, yet many of those are stuck in place they can not move to a damaged area to power repairs.
4. Studies have shown that unsticking mitochondria through genetic manipulation allows animals to regrow nerves.
5. A cell keeps track of its energy budget and does not commit to large tasks if there is not enough energy.
Now there are some subtlety's here, like PQQ specifically stimulating Cytochrome C oxidase which is a redox protein factory that happens to use red light for its reactions. But the general logic here seems to be that any animals which have enough free mitochondria providing energy can regenerate the CNS.
Since mitochondria is what LT proclaims to power through the protein Cytochrome C oxidase it would logically follow that LT would become more effective, that's why I'm so interested in it.
PQQ has a symbiotic relationship with glutathione, they both team up to perform tasks more efficiently. But since PQQ is far more durable, it outlasts the Glutathione. This isn't a problem though because your body has massive amounts of Glutathione, and can produce it endlessly, so you'll never run out.
Glutathione is being offered in some anti tinnitus pills and such combined with zinc and vitamin B as it is proposed that it attenuates (weakens) glutamate transmissions. This may be but I'll go out on a limb and say that I don't think you can raise your glutathione levels much with supplementation.
It seems however that some cancerous cells don't absorb/produce glutathione anymore and when it's run out the waste products from PQQ damage the cell, and it dies through necrosis (cell destruction by attack) instead of being killed by PQQ and Glutathione together through apoptosis (programmed cell death). I guess that's the body's failsafe in fighting these specific cancer cells. Of course if you have no PQQ neither of those will happen.
Without LT, more mitochondria are useful in the body, you'll burn more energy, etc. But there's absolutely nothing little to say that it would help tinnitus at all. In fact more mitochondria in a cell that receives equal amount of energy won't have a shred more power in total. Perhaps the power would be better distributed though, in which case you'd be making tinnitus better very slowly. Think a decade compared to high intensity deep LT, if LT is really the way to power those mitochondria.
That being said PQQ is one of the 47 things that set us apart from monkeys. Given the history of lifeforms on earth a case could be made that cellular power turnover is what makes organisms healthy and able to regenerate. It's too bad we can't analyze a dinosaur with brain damage. I wonder if a crocodile can regenerate its CNS. Score! it does;
http://wiredspace.wits.ac.za/handle/10539/18657
So PQQ is one of the few puzzle pieces in neurogenesis. The others being energy, syntaphilin (mitochondrial anchors), and some neural growth factors chemically pointing the direction neurons should grow toward. Besides that it does provides the body with the ability to create more mitochondria which is a good thing for a great deal of things. Even weightlifters would benefit greatly because more ATP means more muscle strength. It's too bad that there aren't that many studies on mitochondrial counts and what is associated with it. I've only read about a few brain disorders that may be caused by having too few mitochondria. I guess Join the Dots would really help in rounding up the research on this.