411 Utility


Quadruple Linear VCA for Audio and CV




110,00  + VAT

In stock


The 411 is a quadruple linear VCA, mixer, and multiple for audio and CV.

It consists of four linear VCAs with semi-normalled inputs and CV inputs, −6 dB attenuation switches, a mixed output, and an unpatched output.

The 411’s architecture allows to use it in many ways, for example:

  • processing four signals independently;
  • modulating one signal with four CVS and sending it to four different destinations;
  • mixing up to four signals and modulating them with the same CV;
  • mixing two audio signals and modulating them with a modulated CV…

Key Features

The 411 has four linear VCAs perfect for modulating audio signals and control voltages.

The signal inputs and the CV inputs have cascaded semi-normalled connections. Every signal patched to an input also feeds the following ones, allowing for infinite combinations of sources and modulations.

The 411 features an All output and an Unpatched output, just like the popular 321 module. The All output mixes the four sections, while the Unpatched only those whose local output is not going anywhere. 

The switches halve the CV input, allowing the 411 to work with both 0-5 and 0-10 voltages.

The VCAs are designed so that they stay open even if nothing is patched to the inputs.




Additional information

Weight 0,143 kg
Dimensions 15,6 × 6 × 6 cm



6 HP


38 mm

Current draw

35 mA @ +12 V

25 mA @ -12 V

Recommended warmup time

30 min

Audio Input impedance

> 45 KΩ

CV Input Impedance

> 40 KΩ

Output impedance

~ 100 Ω

Global CV offset per section

-20 to 20 mV

Frequency response

DC to 30 KHz

Harmonic distortion (THD+N)

< 0.1%

More details on the Manualone.


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A. Use

Our modules are packed with high-quality components that demand a proper power supply and can get sensibly warm.

That is its normal temperature and we can guarantee their performance.

B. Design

We have two main kinds of capacitors.

The first one is necessary to AC-couple the audio signal: they prevent any unwanted DC offset, and they offer protection against wrong connections. For this reason, you can patch nearly every input to every output, and the worst thing that can happen is some pops or some silence.

The second one is power filters to guarantee a cleaner current flow across the case. They might sound a bit over the top, but we must remember that a Eurorack system is not something that comes straight out of the factory. Instead, every Eurorack setup is unique and may change according to the musician’s need. For this reason, we want to add as much protection as we can, both to avoid issues with our modules and to ensure that even the other modules behave correctly. We use a wide mix of capacitors in our modules: ceramic, electrolytic, tantalum, and multilayer. They can be assembled thru-hole or SMD, according to what gives the best balance between result and space. For example, all the electrolytic capacitors are mounted thru-hole because they perform better according to our tests.

However, the capacitors have zero impact on the power draw, on which you can read in this other FAQ.

Power draw should always be related to what a module does.

Generally speaking, there are modules like SAPÈL that undoubtedly consume more than other random generators. However, SAPÈL is a double module, so a fair comparison would be between it and a pair of similar modules. The same can be said for FUMANA, the most power-demanding filter bank. However, it is also the only Eurorack filter bank with 32 analog bandpass filters, half of which have a 48 dB/oct slope. So, also in this case, a fairer comparison would be between FUMANA and TWO other 16-band filter banks, which leads to similar power consumptions.

More in detail, we engineer our modules to be safe to use. To protect both the modules and the rest of the case, we add a proper buffering stage to every input and output: even if a single buffer doesn’t draw that much power, all the ins and outs piled together can significantly impact the final power draw.

C. Shop

Yes! We opened our online store in October 2022. Check out the full catalog!

Our resellers receive our modules exclusively through our distributor, so we do not have access to the individual shops’ orders or stocks.

We restock every module at least once over a year: we focus on a module’s batch at a time, then we move on to the next one, and so on.

If you want an estimated delivery time for a specific module, drop us a line! We’ll be happy to answer you.