With Vamp Apollo View modular took the early Korg MS-20 and MS-10 filter designs, which favoured non-linear character over stability and control, they added more character with a tube input saturation stage and tube resonance feedback path, further output clipping stage options and then designed in modern stability and control. I joke in the video the filter is so rubbery it might as well be wearing a gimp mask. Vamp is also multimode with low pass, band pass and high pass modes with routable pre/post VCA and gain option, smart normalled CV options and prevision circuitry to turn it into a full single module tube voice, killer kick drum and more.

Vamp, manual, signal flow & more at // https://www.apolloviewmodular.com/modules/vamp