Behringer Swords

This thing really impressed me, it can do so much, it's 2 independent multi-mode filters that can become oscillators with wavefolding, distortion and you can cross-modulate between them as well as create a pretty useable analog 2-op FM synth. The filters are aggressive but very musical, and capable of some unbelievable analog noise and craziness. Discovering new sounds with it all the time. The price is crazy good too, and it seems to sound exactly like the original. Just go for it.

Behringer did a great product with this one. I most often use it as two parallel filters but I have also tried copying the signal of a VCO to both inputs and mix them with different filter settings.