A modular synthesizer format which falls into the „small format“ category. Originally derived from various standards for 19″ rack system based industrial and lab instrumentation known as(DIN 41494 / IEC 297-3 / IEEE 1001.1) and sometimes housed ‚Eurocard‘ technology. Not to be confusedor with the line of low-cost mixers marketed by Behringer under this name. The Eurorack format calls for modules of 128.5mm (slightly over 5″) height. Horizontal width is measured in „horizontal pitch“, where 1 HP = 5.08mm (exactly 0.2″). 3.5mm mono phone jacks are used for interconnection.
The Eurorack format calls for ±12V power (most other current formats use ±15V), in addition +5V is required by some modules. Unfortunately, the orientation of the power connections are not well standardized; the format uses ribbon cables for power and a two-row ribbon cable connector containing either 10 or 16 pins. A „red stripe“ on the ribbon indicates -12V. The 16-pin connector uses the extra pins to distribute +5V, control voltage and gate signals from a keyboard to the modules via a common case connection.
Analogue Solutions (UK) – creators of the Concussor synth modules, along with a variety of synths and sequencers, including the Red Square, the Leipzig, the SEMblance, the TBX-303 and the Oberkorn. Analogue Solutions on Synthtopia
Atomo Labs has introduced a new line of AtomoSynth Eurorack modules.
Bananalogue (USA) – makes several synth modules, including a couple of Serge-influenced modules. Their site is currently missing in action. If you’ve got additional information, leave a comment. Bananalogue on Synthtopia
Blue Lantern Modules offers a small line of Eurorack modules, which currently includes the LM4250 VCF and the DIode VCF.
Bubblesound (US) – makes Eurorack synth modules with original components to more accurately capture the sound of vintage gear. Their site is currently missing in action. If you’ve got additional information, leave a comment. Bubblesound on Synthtopia
Circuit Abbey offers several Eurorack modules, including the Gravity Well wave warper, the Tripfire comparator and input and output modules.
Cwejman (Sweden) – Cwejman makes semi-modular synthesizers and also a large variety of Eurorack synth modules. Cweman on Synthtopia
Cyndustries (USA) – Cyndustries makes synth modules in Blacet, DotCom, ModCan, MOTM & Eurorack formats. Their best known modular is the Zeroscillator, a high end modular oscillator. Cyndustries on Synthtopia.
Delptronics offers Eurorack synthesizer modules, effects boxes and other unique electronic musical instruments.
Din Sync – makes several modules inspired by classic Roland gear.
Division 6 makes a small line of modules that includes the Filtare SEIII multimode filter and some utility modules.
Doepfer (Germany) – manufacturer of electronic music instruments, ranging from keyboards and MIDI controllers to complete analog modular synthesizer systems. Doepfer on Synthtopia
Erthenvar has a line of utility modules, including input, output and power modules. They also carry Eurorack DIY parts, including mounting rail.
GorillaBox – makes a line of heavy-duty modular synth cases.
Grayscale – creates alternate panels for Eurorack modules
Harvestman (USA) – makes a very original line of voltage-controlled digital signal processing modules, including the Malgorithm, Zorlon Cannon, Tyme Safari and a Polivoks filter. Harvestman on Synthtopia
Thonk – UK firm that is ‘here to sell you DIY modulare synth goods, including EuroRack module kits.
Tiptop (USA) – makes a small, but cool line of synth modules, including the Z3000 Smart Voltage Controlled Oscillator and the Z5000 Voltage Controlled Digital Signal Processor. Tiptop Audio on Synthtopia
Toppobrillo – makers of the Quantimator and other Euro modules.
TouellSkouarn – offers several Eurorack modules, including a Germanium Fuzz, Fet Pream and Stereo HeadPhone output.
Trogotronic offers ‘cruel and unusual instruments’, including Eurorack modules, vintage style controllers and ‘Crude Controls’. Current modules include the Model 676 Fury M tube synth and the Model 666 module, which packs a VCO, VCF and VCA into one module.