it's cool but it's nothing crazy.. i had done Impulse reponses of its H version: so you can have it in the computer!The BTDR 3 also has a strange modulated "pitch shift" when decaying if you listen closely. The chip is based on 3x PT2399 delays.
"[..]the associated patent, US8204240, shows that it uses three PT2399 delay chips, one of which is modulated at a slow rate[..]" Merlin Blencowe
Overall, though, the BTDR-3 is a fine piece for pedals and does a good job there, especially for guitars.