![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhwnDHW4ttkkekGMuR-CDWT4vFZHGG8w6zytE_MZaqad7BioVLpwThokdFYWNQ97VhcyQI4fpJIpRJQOfKF7ZO2ARL-AdNq_IwGXBqfxY5MdJ2IY35eoHmf1MutPoG_ozGbFOu4Rcp4QB1C/s400/A122+cropped.png)
(and also in the Sequential Circuits Prophet 5 and Roland SH-101)
Because of its different circuitry and controls, the A-122 has a considerably smooth but thin sound, different like the A-120 'Moog-like' filter and other Doepfer filters.
Also the way the resonance behaves is quite different.
In this case, the filter behaves like a sine wave oscillator.
In this oscillation mode, you can simply use the FCV1 input to contol the pitch because it also works on the 1V/ octave rule, like regular VCOs.
I love the sound of it, you can use it to make fat and smooth basses up to the squelchier TB-303 style sounds.
A very nice filter, but not on top of my favorite filters list.
PatchPierre rating: 7/10
Check out the short (and not too in-depth) demo that i shot earlier today:
Video: Doepfer A-122 VCF3 Demo
" Short Doepfer A-122 Demo by NetPierre
Starts with a sequenced bassline, generated by my Doepfer MAQ16/3 and Doepfer VCO A-110 (saw wave)
Slow LFO sinewave A-147 into QCV input - ADSR into VC2 input
Drums provided by an Elektron Machinedrum "
As the special circuit CEM3320 used in this module is no longer available the module was discontinued.
Doepfer recommends the A-106-6 XP VCF, that is based on the filter circuit of the Oberheim Xpander, as a replacement module.
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