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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
Bubblesound Instruments-Bubblesound - Dual SeM20 200035_1
Dual SeM20
Bubblesound Instruments
The SeM20 is a classic 2 pole state variable Eurorack filter based on the Oberheim SEM's filter with the resonance section of the MS20 grafted on for extra bite and the input section modified to overdrive the single, much like the OSCar

€358.00

In stock

Net: €300.84
Analogue Systems-Analogue Systems RS-110N Multimode Filter 200018_1
RS-110N Multimode Filter Dual Bus
Analogue Systems
The RS-110N is a resonant analog multimode filter with excellent sound, resonance and four simultaneously available filter types. An insert function in the feedback loop allows you to insert other audio processors.

€249.00

In stock

Net: €209.24
IO-Instruments-IO-Instruments - Euporie 190741_1
Euporie
IO-Instruments
Very interesting filter for all those who cannot decide between a Moog filter and a MS20 filter or are looking for something in between

€129.00

Currently unavailable

Net: €108.40
Details
Verbos Electronics -Verbos Electronics - Amp & Tone 190683_1
Amp & Tone (2020 Version)
Verbos Electronics
A classic combination packed into a high-quality module. The Verbos Amp & Tone is a combination of VCF and VCA

€395.00

Pre Order  

Net: €331.93
Steady State Fate-Steady State Fate (SSF) - Stereo Dipole 190589_1
Stereo Dipole (Black)
Steady State Fate
The Stereo Dipole contains four multimode filters, which can be flexibly combined. Its sound is clean and full of character

€478.00

In stock

Net: €401.68
ADDAC Systems-ADDAC - 611 Gotharman's VC Tube Filter 190536_1
611 Gotharman''s VC Tube Filter
ADDAC Systems
The 611 is a bandpass filter with a three-channel mixer at the input section. - The module is not exactly meant for precise audio processing, but rather a specialist for beefy tube saturation and distortion. - That's also why there is a mix control (dry / […]

€399.00

In stock

Net: €335.29
ADDAC Systems-ADDAC - 603 VC Triple Bandpass Filter 190535_1
603 VC Triple Bandpass Filter
ADDAC Systems
The ADDAC module 603 is a fully voltage controllable triple bandpass filter based on the modern version of SSM2164 from CoolAudio for pristine sound quality. The three filters are normalised allowing to be used either for the same input source or to proce […]

€429.00

In stock

Net: €360.50
TouellSkouarn-TouellSkouarn - Ar Merc’het Brao (Module) 190519_1
Ar Merc’het Brao (Module)
TouellSkouarn
Ar Merc'het Brao is a dual or stereo filter with a slope of -12 dB per octave. Distortion circuits add some musical aggression to audio signals

€359.00

In stock

Net: €301.68
Industrial Music Electronics-Industrial Music Electronics - Bionic Lester Mark III 190424_1
Bionic Lester Mark III
Industrial Music Electronics
Bionic Lester Mark III is a two channel 12dB state variable digital filter inspired by the best of late-1990s „virtual analog“ filters. Each filter section has three CV inputs

€479.00

Pre Order  

Net: €402.52
Details
Instruo-Instruo - I-ō47 190418_1
I-ō47
Instruo
I-ō47 Multimode Resonator/Filter is a modern take on a vintage circuit design inspired by the classic 1047 module of the ARP2500. It has been designed with some extra features like an additional inverted input and a strike input for pinging the filter

€355.00

In stock

Net: €298.32
Erica Synths-Erica Synths - Pico LPG 190303_1
Pico LPG
Erica Synths
The Erica Synths Pico LPG is a small lowpass gate that delivers a wide range of sounds thanks to voltage-controllable resonance and an integrated envelope

€129.00

Currently unavailable

Net: €108.40
Details
Doepfer Musikelektronik GmbH-Doepfer A-121-3 Multimode VCF Slim Line 190272_1
A-121-3 Multimode VCF Slim Line
Doepfer
The new A-121-3 from Doepfer is a very compact multimode filter with voltage controllable resonance. It offers separate outputs for lowpass, highpass, bandpass and notch

€98.00

In stock

Net: €82.35
Analogue Systems-Analogue Systems RS-500N EMS Filter 190252_1
RS-500N Synthifilter Dual Bus
Analogue Systems
Genuine EMS Synthi filter. This legendary filter can be switched between pre 1974 and post 1974 filter type and response (aka resonance).

€279.00

Pre Order  

Net: €234.45
Analogue Systems-Analogue Systems RS-100N Lowpass 190250_1
RS-100N Lowpass Dual Bus
Analogue Systems
This low pass filter is a very good -24dB/octave Moog filter, based on the classic Moog cascade with selected, low-noise transistors. The new RS-100N version features all the improvements from the RS-100S regarding stability, tracking, distortion behavoiu […]

€229.00

In stock

Net: €192.44
Doepfer Musikelektronik GmbH-Doepfer A-120 24dB LP Filter (Moog) 120095_1
A-120 24dB LP Filter
Doepfer
The A-120 features the classic Moog low pass filter built around a transistor cascade It has a slope of 24dB per octaveand three three modulation inputs for controlling the cutoff frequency. Self-oscillation of the resonance is possible only above ca. 300 […]
Color

€115.00

In stock

Net: €96.64
AJH Synth-AJH Synth - FFB914 Fixed Filter Bank - SILVER 190130_1
FFB914 Fixed Filter Bank (silver)
AJH Synth
The Fixed Filter Bank 914 from AJH Synth is based on the sought after 914 Fixed Filter Bank from the 1960’s Moog 900 series modular synthesiser system. The design was revisited and adapted for eurorack
Color

€678.00

In stock

Net: €569.75
Doepfer Musikelektronik GmbH-Doepfer A-106-5SE 12dB Filter (SEM) Special Edition 190048_1
A-106-5 SEM VCF (Cream)
Doepfer
Another filter that uses the circuitry of a classic. This time it´s the Oberheim SEM (Synthesizer Expander Module), that was used in the Four-Voice and Eight-Voice for instance. The filter has a saturated fat sound and especially in lowpass mode it growls […]
Color

from €85.00

In stock

Net: €71.43
Make Noise -Make Noise - Qpas 190038_1
Qpas
Make Noise
QPAS stands for Quad Peak Animated System. That IS a very accurate description of the new Make Noise module. In words we all are a bit more used to: It is a quad (!) stereo (!!) multimode (HP/BP/LP…SP?) filter

€418.00

Pre Order  

Net: €351.26
Electrosmith-Electrosmith - 2144 LPF Module 180495_1
2144 LPF
Electrosmith
The 2144 LPF is a compact and smooth 4 pole low-pass filter based on a reissue of the SSM2044. This chip was used in the filter section of many legendary poly synths like CMI Fairlight, Kawai SX-240, Korg MonoPoly, Polysix, Octave Cat and PPG Wave 2.2. It […]

€144.00

Currently unavailable

Net: €121.01
Details
Frequency Central-Frequency Central - Raging Bull 3_180437_
Raging Bull 3
Frequency Central
The Raging Bull, a VCF / VCA combination inspired by the Moog Taurus synthesizer, is now available in a new version

€239.00

In stock

Net: €200.84
Shakmat Modular-Shakmat Modular - HiPass 180389_1
HiPass
Shakmat Modular
Looking for a few simple filters to attenuate low frequencies?! Hipass from Shakmat offers four fixed Butterworth high pass filters in just 2 HP. Two of them cut off at 30Hz and the other two cut off at 100Hz, all with a slope of -18dB per octave. Perfect […]

€89.00

In stock

Net: €74.79
Happy Nerding-Happy Nerding - MMM VCF (Silver) 160009_1
MMM VCF (Silver)
Happy Nerding
MMM VCF stands for M°°g Multi Mode Voltage Controlled Filter and is a dual filter featuring common controls for both filters
Color

from €189.00

In stock

Net: €158.82
Serge Modular-Serge Modular - Variable Resonance Filter (VCFQ) 180362_1
Variable Resonance Filter (VCFQ)
Serge Modular
The Serge Variable Resonance Filter, VCFQ for short, is a multimode circuit with separate outputs for high-pass, band-pass and low-pass as well as notch characteristic. The module features powerful, clearly analog sound. Its resonance is quite sharp

€345.00

In stock

Net: €289.92
Metasonix-Metasonix RK6 Resonant Lowpass Filter 180340_1
RK6 Resonant Lowpass Filter
Metasonix
Often customers ask me how to add some warmth to a digital signal or sample. I never really had an answer ready, because many devices saturate and distort nicely but lack in delivering on precisely this cliché

€569.00

Currently unavailable

Net: €478.15
Details
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