While not peer-reviewed, these are written by electrical engineers/hobbyists with rigor:
Modifying the internal filter to remove unwanted muddiness from the closed and open hats.
The DrumBrute modding community has developed a wide range of modifications, catering to various interests and skill levels. Some popular types of mods include:
Mount a small toggle switch to engage/disengage the "Dirt Mode." 4. Direct Individual Voice Taps