Thank you @GarfieldModular! Everyday I understand more things about modular haha, thank you for the long reply. I'll read about some filters en generators, I was hoping to generate these from the 1uO_c and Disting mk4. Also, I was thinking that Quadrax would work as an LFO and a second voice, I saw some videos where you can control the oscillators at audio rate. A second VCA is very tempting and the Doepfer A-124 looks veeeery good for the price. I will rethink the case with these things and I will let you know ;)