Doepfer

Hi all, I am thinking of a quad system made up by doepfer modules, mainly meant for soundscapes, drones but also capable of melodic stuff. 
So far I settled on quad vco/lfo, quad complex eg, quad lfo and matrix mixer. 

I am in doubt about vca and filters... Not sure how to keep pace with the quad system... Maybe a quad vca but is there any dual input or stereo filter in doepfer Catalogue?