In fact, It is hard to understand what this is capable of, or what concept it has...
But, once you understand its Features, It can't be beaten.
I demoed and digged almost every de-essers out there, and it turns out that TB Sibalance is true winner, literally. (IMO)
There was no hesitate for buying this one.
It is basically Dynamic eq with some options, But with Matched filter, Tonal decomposition, Level independent threshold (also, ABS Threshold is available, they work together simultaneously), and so on.. It becomes the most powerful de-esser out there, IMO.
You know, Every singer have different sibilance profile. but if you can handle this plugin, you can get a very transparent result for every singer with this one.
My only complaint is phase option. If there is 'linear phase/ minimum phase' option, It would be even better.
[Edit: Another complaint is working frequency range. I hope next update has extended frequency range].