Cwejman MMF-1S

$930.00 Price Tier: High-end

5.0 (2)

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Page last updated Jun 17, 2026

Pricing and availability

We compare 600+ stores and found this item at 1 store. Prices updated June 17, 2026.

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Price

$930.00 6 available Used

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Average Price: $930

High-end/Boutique

$149

$350+

Price Tier

In the Modular Synthesizers category, Cwejman MMF-1S is priced in the High-end/Boutique range. This premium gear is built to very high standards and offers premium features.

Budget

Standard

High-end

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Description

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Explore the depths of sound sculpting with the Cwejman MMF-1S, a versatile addition to any modular synthesizer setup. Designed for those who crave precision and flexibility, this multi-mode filter module offers a wide array of tonal possibilities. Delve into its sophisticated architecture, which supports simultaneous low-pass, band-pass, and high-pass filtering, enabling you to craft everything from warm, analog textures to sharp, resonant peaks.

The MMF-1S is renowned for its superb signal processing capabilities, boasting a signal-to-noise ratio that promises clarity and depth in every nuance. Its intuitive controls allow for seamless modulation and real-time performance adjustments, making it a favorite among both studio producers and live performers. Whether you're aiming to create rich, evolving pads or punchy, staccato leads, the MMF-1S provides an expansive sonic palette that meets the needs of the most discerning musicians.

Key Features:

Multi-mode filter with simultaneous low-pass, band-pass, and high-pass outputs
Signal-to-noise ratio optimized for clear and detailed audio
Intuitive control interface for easy modulation and real-time adjustments
High-quality components ensure stable and reliable performance
Suitable for both studio production and live performance applications

Product specs

Brand	Cwejman
Model	MMF-1S Multi Mode Filter
Finish	Eggshell, Grey
Year	2010s
Made In	Sweden
Categories	Eurorack Modules and Cases, Synth Modules
Horizontal Pitch	20HP
Modular Synth Format	Eurorack
Synth Module Function	Distortion, Filter, Mixer, VCA

FAQs

What synthesis functions does the Cwejman MMF-1S offer?: The Cwejman MMF-1S serves as a multi-mode filter with additional functions like distortion, mixing, and voltage-controlled amplification (VCA), making it versatile for sound shaping in modular synthesis setups.
How does the Cwejman MMF-1S integrate into a Eurorack system?: The Cwejman MMF-1S is a Eurorack module with a 20HP width, designed to fit seamlessly into any standard Eurorack system, offering easy integration for expanding your modular synth capabilities.
What types of sound modulation can I achieve with the Cwejman MMF-1S?: The Cwejman MMF-1S allows for diverse sound modulation, including low-pass, high-pass, band-pass, and notch filtering, alongside distortion effects, enabling complex and dynamic sound design.
Is the Cwejman MMF-1S suitable for beginners in modular synthesis?: While the Cwejman MMF-1S offers advanced features ideal for experienced users, its intuitive design and comprehensive functionality make it accessible for beginners looking to explore modular synthesis.
What is the build quality of the Cwejman MMF-1S like?: Made in Sweden, the Cwejman MMF-1S is known for its robust build quality, featuring a durable eggshell grey finish that ensures long-lasting performance in both studio and live environments.

Videos

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Dudadius

Cwejman MMF-1S revised Tweak Demo

Dudadius

Cwejman MMF-1S Tweak Demo 1 no sat :(

Dudadius

Cwejman MMF-1S multi mode filter

John Schussler

Cwejman MMF-1S Patch Demo

Mr. Rachele

Reviews

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Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Cwejman MMF-1S.

Build quality

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The MMF-1S features excellent build quality with consistently pure tones across waveforms and settings, but no unique signature sound.
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Comparisons

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L-1 modules are noted to offer similar quality and circuit designs to Cwejman, often available as DIY kits.
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The Cwejman MMF-1S is compared to Make Noise and Harvestman for experimental patches, with the latter preferred for West Coast styles.
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The MS-20 filter clones are frequently recommended for their aggressive, distorting elements, making them a popular choice for those seeking a heavier sound.
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Value and pricing

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Owners suggest Cwejman modules are not worth "inflated prices" unless budget isn't a concern due to availability of cheaper alternatives with comparable quality.
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Modules are considered overpriced on the used market, with many owners unwilling to pay more than 10% over retail.
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The Cwejman MMF-1 is described as sounding "transformers-soundtrack huge," though the high price on the used market can be prohibitive for some buyers.
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Use cases and applications

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The MMF-1S is favored for its filter quality, making it ideal for users who focus on filters and envelopes for tone shaping.
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Cwejman modules are highlighted for their precision and suitability in large polyphonic systems, with perfect sine waves and snappy envelopes noted.
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The Polivoks filter clones, particularly the Harvestman version, are favored for their wild resonance and LP/BP sounds, suited for aggressive music styles.
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The WMD uHC filter is highlighted for its sensitivity to gain, with extra gain producing a crunchy resonance ideal for aggressive tonal applications.
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User experience

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An owner mentioned using the MMF-1S as a main filter for 3-4 years, appreciating its sound and build but eventually exploring other options.
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Owners suggest joining store mailing lists or preordering via cwejman.jp for a chance to purchase new modules.
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The availability of Cwejman modules is limited, necessitating patience and vigilance to acquire them, often requiring waiting lists or quick action upon release.
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Features and functionality

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The WMD C4RBN is noted for its wavefolder and saturation circuit, offering a beefy sound that's also enhanced by a filter ping input.
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The Bastl Cinnamon filter offers a unique drive switch and interesting resonance settings, praised for its character and versatility despite its unusual HP size.
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