mostly the problem with wasp filters is that one of the chips dies - it doesn't happen that often from what I can make out - it's socketed so an easy replacement - no soldering required and the chips are cheap from what I can remember

20 seconds on google and I found it to be a CD4069 chip that fails - the originals are TI, but apparently ST or MCI have significantly better longevity - buy a few and you should be good

I only looked quickly at mouser - the TI chips are 0,52€ each or 10 for 4,39€ + tax and shipping

"some of the best base-level info to remember can be found in Jim's sigfile" @Lugia

Utility modules are the dull polish that makes the shiny modules actually shine!!!

sound sources < sound modifiers < modulation sources < utilities