A-104 is a fourfold formant filter as used in the Mixtur Trautonium by Oskar Sala. It is made of four parallel resonance filte...
Module A-105 is another voltage-controlled low-pass filter with 24dB/octave slope. The A-105 is very similar to the A-122 that...
Doepfer introduces with the A-105-4 the first polyphonic filter module for the Eurorack system- the sound is a proven classi...
Module A-106-1 has it's origin in our experiments to built a MS20 filter clone. The famous original MS20 included two filters...
Module A-106-5 is a 12dB multimode filter that is based on the filter circuit of the Oberheim SEM module. The filter is equip...
Module A-106-6 is a multimode filter that is based on the filter circuit of the Oberheim Xpander. The module features 15 diffe...
