@soulie Yes, it's possible, here is download link Did you know that you can put all audio in one scene and then add it to scenes via nested scene ?
Fix audio filters creation in microphone sources
Changed hotkey registering logic. You also might want to check obs-libre-macros - Scripting and macros hotkeys in OBS Studio for Humans
obs-libre-macros
Added hold feature so when you hold hotkey (pressed down for some period of time) filter is active, otherwise it's inactive.
download here : https://github.com/upgradeQ/obs-filter-hotkeys/releases/tag/0.2.0