Doepfer’s A-103 is a voltage controlled low-pass filter inspired by the TB303 filter and featuring a circuit modified from the legendary Moog transistor ladder filter. The module features a -18dB octave slope and is great for achieving classic acid-style resonance.
A-103 VCF6 Features
-18dB/octave Slope Transistor Ladder Filter
Based on a modified Moog design and modeled after the legendary TB303 Filter