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Sound Processing

The sound processing category includes modules that modify incoming audio signals. It features classic components like filters, as well as resonators or ring modulators. Whether legendary designs from Cwejman, experimental circuits from Rossum, or simply good modules from Doepfer—the choice is truly extensive. The wide range of possibilities for connecting individual components—whether for audio or control signals—enables unique results when using modular systems.

Filter products

Cwejman DFA-2 (Battleship Grey)
Cwejman DFA-2 (Battleship Grey)
Cwejman Music
The last design from Wowa! The DFA-2 is a dual filter and VCA combination, in the usual high Cwejman quality.

€890.00

In stock

Net: €747.90
Cwejman DFA-2 (Eggshell)
Cwejman DFA-2 (Eggshell)
Cwejman Music
The last design from Wowa! The DFA-2 is a dual filter and VCA combination, in the usual high Cwejman quality.

€890.00

In stock

Net: €747.90
NEW STUFF
Pip Filter
Pip Filter
ALM Busy Circuits
ALM Busy Circuits Pip Filter – Pingable 2-Pole Low-Pass and VCA.

€134.00

In stock

Net: €112.61
NEW STUFF
Sallen-Key
Sallen-Key
Black Noise Modular
Sallen-Key is Black Noise Modulars take on the classic MS-20 filter design.

€139.00

In stock

Net: €116.81
HOT SHIT
NEW STUFF
AJH Synth - Matrix VCF (Silver) 251304_1
Matrix VCF (Silver)
AJH Synth
AJH Synth Matrix VCF - Filter Madness In Compact Form Inspired by the Oberheim Matrix 12.
Frontplattenfarbe

€399.00

In stock

Net: €335.29
Details
HOT SHIT
NEW STUFF
AJH Synth - Matrix VCF (Black) 251303_1
Matrix VCF (Black)
AJH Synth
AJH Synth Matrix VCF - Filter Madness In Compact Form Inspired by the Oberheim Matrix 12.
Frontplattenfarbe

€399.00

In stock

Net: €335.29
Details
NEW STUFF
XAOC Devices - Arad (Expander for Oradea) 251302_1
Arad (Expander for Oradea)
Xaoc Devices
Xaoc Devices’ Arad — Expander Module for the Oradea Quadruple Resonator.

€119.00

Pre-order now...

Net: €100.00
NEW STUFF
XAOC Devices - Oradea 251301_1
Oradea
Xaoc Devices
Xaoc Devices Oradea - Quadruple Analog Resonator Magic

€519.00

Pre-order now...

Net: €436.13
NEW STUFF
SF1 Dual/Stereo Filter (2025)
SF1 Dual/Stereo Filter (2025)
Weston Precision Audio
Weston Precision Audio's SF1 is a dual filter whose main attraction is not just a serial or parallel connection.

€379.00

Pre-order now...

Net: €318.49
RES-4 (Battleship Grey)
RES-4 (Battleship Grey)
Cwejman Music
A legend! The RES-4 is a combination of 4 resonant filters. An inspiring Tool made in Cwejman high quality.

€1,060.00

In stock

Net: €890.76
OUR PICK
Euterpe - Itinera 251145_1
Itinera
Euterpe Synthesizer Laboratories
Euterpe Itinera offers saturation, distortion, multimode filter, changeable resonance paths and feedback functions.

€689.00

In stock

Net: €578.99
Tiptop Audio - Octopass (ART) 251123_1
Octopass (ART)
Tiptop Audio
The Octopass by Tiptop Audio delivers the coveted sound of classic synthesizers through eight channels of professional 24dB/octave low-pass filtering based on the renowned 2044 chip.

€519.00

In stock

Net: €436.13
Serge Modular - New Gates / VCFX 2023 251112_1
New Gates / VCFX 2023
Serge Modular
Serge NEW GATES / VCFX 2023 — Dual Function Sound Sculptor

€325.00

In stock

Net: €273.11
HOT SHIT
Tobinski - Dual LPG/VCA 251104_1
Dual LPG/VCA
Tobinski
Tobinski Dual LPG/VCA - brings together Buchla and Moog designs.

€249.00

Pre-order now...

Net: €209.24
SALE
OUR PICK
Buchla Quad Lopass Gate Model 292t
Buchla Quad Lopass Gate Model 292t
Tiptop Audio
This is one of those modules you're happy to wait for - because you know it's worth it.

€348.00 €399.00  

In stock

Net: €292.44
NEW STUFF
Metamorf
Metamorf
Alfa Delta V.O.F.
Mathematical Filter Galore - Alfa Delta's Metamorph Digital Filter Matrix

€729.00

In stock

Net: €612.61
Noise Engineering - Fala Versio 240715_1
Fala Versio
Noise Engineering
Speaking in Filters — Noise Engineering's Fala Versio.

€469.00

In stock

Net: €394.12
Nekyia Circuits - Sosumi 240700_1
Sosumi
Nekyia Circuits
Nekyia Circuits' Sosumi — Dual Low Pass Gate with Character

€159.00

In stock

Net: €133.61
Nekyia Circuits - Root Locus 240698_1
Root Locus
Nekyia Circuits
Neykia Circuits' Root Locus - Serge-Inspired Multimode Filter Enhanced With Modern Extras.

€229.00

In stock

Net: €192.44
Nekyia Circuits - Muzzle 240696_1
Muzzle
Nekyia Circuits
Nekyia Circuits' Muzzle — Vactrol-based LP Filter tailored for all things percussive.

€159.00

In stock

Net: €133.61
Cwejman MMF-2 (Matte Black) 240690_1
MMF-2 (Matte Black)
Cwejman Music
The MMF-2 is a stereo multimode filter - one of the best we know. Here in the color Matte Black.

€1,160.00

Pre-order now...

Net: €974.79
Cwejman VM-1S (Matte Black) 240686_1
VM-1S
Cwejman Music
The VM-1S Voice Module from Cwejman delivers top-tier monophonic synthesizer fun! This is the color Matte Black.

€1,049.00

Pre-order now...

Net: €881.51
Cwejman RES-4 241084_1
RES-4 (Grey)
Cwejman Music
A legend! The RES-4 is a combination of 4 resonant filters. An inspiring Tool made in Cwejman high quality.
Frontplattenfarbe

€1,060.00

Currently unavailable

Net: €890.76
Details
BlaknBlu - Foxtrot Duo 240661_1
Foxtrot Duo
BlaknBlu
BlaknBlu's Foxtrot Duo — Multi-Mode Filter Processor Packed with Three Different Models.

€299.00

In stock

Net: €251.26
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