Doepfer introduces with the A-105-4 the first polyphonic filter module for the Eurorack system; the sound is a proven classic based on the SSM chip. On narrow 8 TE everything is quadruple available: Inputs for audio and CV as well as separate outputs for each voice. There is one set of controllers for all four filters that acts equally on all four units. The behaviour of each channel remains individual.
Extensibility:
With the A-141-4 Quad VC ADSR, the A-105-4 Quad Poly VCF can be easily prewired internally via a ribbon cable and gives the user a quad polyphonic VC ADSR (envelope) without having to patch it separately.