This Pedal is currently available.
Fuzz with frequency split and stereo signal
Fuzz So Heavy, It Had to Be Split
The Crossover Fuzz is a screaming, swirling filter-fuzz monster. It takes your signal, slices it into high and low frequencies, and then absolutely wrecks each band with Death By Audio’s signature fuzz. Like a crossover circuit on a rampage, it gives you independent control over each half of your sound (highs and lows), letting you shape, destroy, and reimagine your tone like never before.
https://deathbyaudio.com/collections/all-pedals/products/crossover-fuzz
These merchants probably sell this module. Huh?