Cwejman SM-1 Traffic Grey (Special Ed.)

€2,590.00 *
Net price: €2,176.47

Prices incl. VAT plus shipping costs

Pre-order - Delivery date t.b.d.

  • 240071
  • 29
Wowa Cwejman's synthesizer designs have become classics.For many these modules are the pinnacle... more
Product information "Cwejman SM-1 Traffic Grey (Special Ed.)"

Special Ed. in Traffic Grey (light anthrazite, grey). A complete Dual-VCO Synth for your Eurorack: The SM-1 is an awesome entry into the Cwejman experience.

Wowa Cwejman's synthesizer designs have become classics.For many these modules are the pinnacle of Eurorack, to which they are very attached. A unique combination of interface design, high-quality components, clean yet characterful sound, a lot of engineering experience and precise tactility have been/are/will be an ear-opening experience for many!

The SM-1 is a complete voice in Cwejman style, featuring VCOs, VCF, VCA, envelopes, LFOs, ring modulation, and more. It has everything for a full monophonic synthesizer experience, and the numerous patch points leave all creative possibilities open. The sound of the SM-1, as expected from Cwejman, can be very clean, but it also has some special features to venture into raw and rough territories.

The SM-1 consists of five sections, two of which are the two oscillators. Except for a few waveforms, they are similar: there is pulse width modulation, internal VCAs, synchronization, and both have, in addition to the beautiful sine, triangle, and pulse waves, mixed waves, all containing a pulse and therefore responding to PWM! Oscillator 1 also has a noise source, and Oscillator 2 has a ring modulator that consists of VCO1 and VCO2 or VCO2 and external audio. Both oscillators are fully patchable except for audio outputs (damn!) and have well-chosen normalizations.

To the left of the oscillators is the master section, which has some great features up its sleeve. There is an octave switch, glide, and two LFOs that can have versatile waveforms, be synchronized, and go into audio rate! In addition, both LFOs track 1V/octave, allowing for tonal play and use as a third and fourth oscillator. Both of them go well into audio-range.

A special treat is undoubtedly the filter of the SM-1. It is the same circuit as in the MMF-1. It has this special organic-acoustic character. In addition to the classic low-pass, band-pass, and high-pass modes, the filter modes also include modes with two peaks! The spacing parameter allows you to place these two peaks relative to each other, creating vowel-like sounds and fantastic filter sweeps. Depending on mode both Peaks are resonant and can be driven to self-oscillation.
Additionally, there is a saturation switch (a la MMF1S) that can choose between two saturation types. Here, you can lead your SM-1 into rough terrain and give it new edges and corners - precisely.

Finally, there are the two envelopes, which also contribute significantly to the SM-1's sound! They always sound very musical and are full of sweet spots! Try for yourself! The loop mode here does not work as one might expect and only loops the AD-portion at high gates. This gives you ratcheting and trills. We suspect that this section is based on ADSR-VC2 with features borrowed from CTG-VC.

The SM-1 easily handles the classic monosynth soundpalette, but goes to "11" when you depart into more experimental territory. It is build from the well-known basic building blocks, but the sum of its parts is something else. Especially when you start self-patching this module.

Due to its high-quality construction, all Cwejman devices are absolutely reliable and maintain their pitch even in the hottest techno cellar. The SM-1 can stand on its own feet (maybe some attenuators are needed), but is also an excellent foundation for any Eurorack system.


  • 2 Oscillators
  • Ring modulation
  • Multi-mode filter with two peaks
  • Saturation
  • 2 LFOs with synchronization and V/oct.
  • 2 Envelopes with loop function and fully CV-controllable
  • Master section with transposition and glide
  • Extensive patch possibilities

External videos:

HE: 3
TE: 56
Depth: 29
Power consumption +12V: 150
Power consumption -12V: 120
Related links to "Cwejman SM-1 Traffic Grey (Special Ed.)"
"Cwejman SM-1 Traffic Grey (Special Ed.)"
SM-1 @Cwejman Japan
Here is the information available on the brand...... more
Cwejman Music

The history of Cwejman goes back to the 1970s with a bespoke fully analog synthesizer called the Synthra. After a long hiatus due to the heyday of digital synths, they returned in 1998 seeing that the interest in analog modular synths was catching up. Ever since, Cwejman has been a synonym of uncompromising engineering aimed to provide outstanding sound quality.

170009_1 Cwejman MBC-3
€1,300.00 *
Net price: €1,092.44
120456_1 Cwejman VCO-2RM
€998.00 *
Net price: €838.66
170009_1 Cwejman MBC-3
€1,300.00 *
Net price: €1,092.44
190187_1 Cwejman SM-1
€2,590.00 *
Net price: €2,176.47
120448_1 Cwejman RES-4
€1,060.00 *
Net price: €890.76
240198_1 Intellijel Designs - Cascadia (White Fog)
€2,218.00 *
Net price: €1,863.87
240170_1 After Later Audio - Adventure 7U/104HP Case
€729.00 *
Net price: €612.61
120428_1 Cwejman S1 Mk2 analog synth weiß
€3,770.00 *
Net price: €3,168.07
130269_1 Cwejman QMMF-4
€1,549.00 *
Net price: €1,301.68
230651_1 Forge TME - VHIKK X Drone Voice
€528.00 *
Net price: €443.70
240082_1 Bubblesound - SEM20st
€349.00 *
Net price: €293.28
160001_1 Cwejman MMF-1S
€958.00 *
Net price: €805.04
240134_1 Befaco - MIDI Thing v2
€319.00 *
Net price: €268.07
240116_1 Serge Modular - GTS Slope Generator III
€499.00 *
Net price: €419.33
240115_1 Serge Modular - VC Resonant EQ
€889.00 *
Net price: €747.06
240129_1 APB - ProSpec 2U6M2S
€2,140.00 *
Net price: €1,798.32
240215_1 Arturia - MiniFreak Stellar Edition
€579.00 *
Net price: €486.55
240028_1 Plinky - Plinky v3
€428.00 *
Net price: €359.66
240078_1 Hexinverter - Mutant Machine 2024
€368.00 *
Net price: €309.24
230446_1 Jomox - ModFM Synth
€999.00 *
Net price: €839.50
240182_1 Elektron - Digitakt II
€999.00 *
Net price: €839.50
210537_1 Tubbutec / LPZW - 6m0d6
€639.00 *
Net price: €536.97
200387_1 Grendel - Drone Commander 2 (model of 2020)
€529.00 * €678.00 *
Net price: €444.54
240191_1 AtoVproject - MMx2
€179.00 *
Net price: €150.42
240128_1 APB - ProSpec 1U8M
€1,270.00 *
Net price: €1,067.23
240077_1 Gamechanger Audio - Plasma Voice
€499.00 *
Net price: €419.33
210068_1 Black Corporation - Deckard's Voice
€799.00 *
Net price: €671.43
240183_1 Der Mann mit der Maschine - Moto Kit
€1,490.00 *
Net price: €1,252.10
240205_1 Make Noise - CH.SVR
€109.00 *
Net price: €91.60
240154_1 Erica Synths - Perkons
€1,965.00 *
Net price: €1,651.26
240037_1 Make Noise - Maths 2
€329.00 *
Net price: €276.47
230521_1 Datanoise - OctaWave Eurorack Edition
€348.00 *
Net price: €292.44
230667_1 Boredbrain Music - Xcelon
€1,079.00 *
Net price: €906.72
230577_1 Modern Sounds - Pluto
€598.00 *
Net price: €502.52
230299_1 Befaco - Case 7U
€628.00 *
Net price: €527.73
210843_1 L-1 - Quad Discrete VC Resonant Equalizer
€729.00 * €818.00 *
Net price: €612.61
220368_1 RYK Modular - Vector Wave
€438.00 *
Net price: €368.07
220235_1 Making Sound Machines - Stolperbeats
€439.00 *
Net price: €368.91