Behringer Filtamp Module 1006

Although it doesn't follow the ARP 2500 module exactly it does pull together some interesting features. It has an inbuilt VCA and you can mix between two audio inputs. The Kybd, CV1 and CV2 inputs are all identical CV inputs where Kybd acts purely on the filter cutoff whereas CV1 and CV2 can act both on the filter and the VCA. So you can apply a single incoming envelope to both VCA and VCF or combine modulations into interesting shapes. And ultimately it sounds really good. The colours on the knobs are also pretty awesome and looks great in the rack.