Doepfer A-120 VCF1 Low Pass Filter Eurorack Module
The A-120 module was inspired by the classic Moog low-pass transistor cascade filter. The module features a 24dB slope and three separate CV inputs, each with potentiometers, that control the cutoff frequency. The audio input also has a dedicated potentiometer that can be used to overdrive the filter.
The Cut-Off Frequency determines the point at which filtering takes effect. You can control this manually, or by voltage control (filter modulation, for instance by an LFO). Three CV inputs are available, and the sum of the voltages from these affects the filter cut-off.
The module is based on a so-called “transistor ladder” design, with a cut-off slope of -24 dB/octave, as in various Moog synthesizers. That’s what gives it its classic, legendary Moog sound.
Resonance (or Emphasis) is adjustable all the way up to self-oscillation – in which case the filter behaves like a sine wave oscillator.
- Moog Style Trasistor Ladder Filter
- -24dB/Octave filter cutoff slope
- Classic and legendary sound
- Resonance is adjustable up to self-oscillation which causes the filter to behave like a sine wave oscillator
- Width 8HP
This Doepfer A-120 is in Fantastic Condition and had Home Use Only. It comes with it’s Ribbon Cable and Screws. PLUS we’re also including a Patch Cable!