The wasp filter is an oddball, drive it to hard and the signal bleeds through, turn the resonance up too high and it wobbles and warbles all over the place but this is exactly what it is good for, adding some random oddness and colour.
Trimming the input signal and the resonance level makes it behave more predictably and makes it more of a sound sculptor (traditional filter) but it still has an almost melting metal like quality to its sound, quite "acid" I guess. When using it with the more subtle settings or with the high/low mixed, a little extra gain on the output helps it sit right against other modular signals.
If you feed the bandpass output back to the input you can get the resonance to really scream and self resonate.
The dials are all really solid, feeling and the construction feels built to last.
Anyway, I love it.
:)