333 Utility

333

ProAudio Sum and Distribution

333: three sections, each with three inputs and three outputs.

 

Manual
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Description

The 333 is a summing and distribution module for Eurorack modular systems.

It is composed of three identical sections, red, yellow, and green, each of those featuring a three-input summing amplifier with three independently buffered outputs.

Derived directly from the CGM creative mixer series, the sum section is DC coupled, allowing the sum of control voltages as well as audio signals.

With an extremely low tolerance in both sum and output sections, it is also suitable for summing quantized voltages like the ones coming out from the quantized outputs of the SAPEL.

In case CVs or audio signals are particularly hot, the 6dB attenuator might be helpful to reduce exactly by 50% the incoming signals.

The red and yellow output are also normalled to the first jack socket of the yellow and green input: in this way, this module can also work as a 1-to-9 buffered multiple.

Key Features

Flexible I/O Patterns (1-9 to 7-1)

The 333 architecture allows you to use it as a mixer, as a buffered multiple, or both.

You can use the three sections together for sending one signal to up to nine outputs, or you can use the three inputs of a section to mix as many sounds or CVS.

Each section’s output is semi-normalled to the following one’s input so that you can blend up to seven signals.

A Perfect Mix

The 333 borrows some design choices from the CGM so that you can mix audio signals with an excellent summing stage and duplicate them.

The inputs are DC-coupled and allow you to precisely sum CVs as well.

Buffered Outputs

All nine outputs are buffered to guarantee a high multiplication fidelity.

Your V/oct signals will be safer than ever!

Switch Attenuators

If your audio signals are too hot, each section has a -6dB switch to halve the amplitude. If you patch CVs, they will be divided by two.

Since the three sections are connected, you can cascade the three switches and get -12 and -18 dB in the second and third sections, respectively.

Learn

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Additional information

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

Specs

Size

6 HP

Depth

38 mm

Current draw

48 mA @ +12 V

48 mA @ -12 V

Recommended warmup time

30 min

Input impedance

> 90 KΩ

Output impedance

< 50 Ω

CV tolerance

< 0.5%

Global CV offset per section

-20 to 20 mV

Frequency response

DC to 30 KHz

Harmonic distortion (THD+N)

< 0.01%

More details on the Manualone.

FAQ

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C. Shop

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Can I buy directly from you?

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

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When will this module become available at [your shop name]?

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

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I can’t find this module! Do you plan a restock?

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.

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