Well the big electrolytic caps you need for the passive filters are infamously unreliable which is why you see everyone trumpeting their "Japanese" brand capaci

Well the big electrolytic caps you need for the passive filters are infamously unreliable which is why you see everyone trumpeting their "Japanese" brand capacitors which are supposed to be better. The caps you need for the active filter are the tiny solid ceramic ones that are basically bulletproof except in high vibration environments. The ICs needed are similar.