This pedal was designed and hand-made specifically for Jack White by Chris Young of Union Tube & Transistor, whose pedals Jack has also used on songs like "Sixteen Saltines" and "I'm Shakin'". The pedal was mentioned in the [2019 Premier Guitar interview.](https://www.premierguitar.com/articles/28930-the-raconteurs-jack-white-and-brendan-benson?page=3)more
I'm a huge fan of Jack White, but this pedal simply isn't very good. The feature of how it becomes an fuzz octave pedal around the 12 fret is cool, but it has no sustain at all. It actually gives your setup even less sustain.
The design is really good and it comes in a really nice box too, but considering the high cost, don't waste your money on this pedal.