BoredBrain Music Mimix





  • 1 to 4 buffered multiple with inverted 4th copy
  • 1 to 4 buffered multiple with rectified 4th copy
  • 4 to 1 unity mixer normalled to the two multiples
  • Bipolar LED signal indicators for each section

Mimic and mix

Mimix is a handy utility for copying and combining signals in eurorack systems. The module features three sections: two buffered multiples each with an augmented fourth output, and a 4-input unity summing mixer.


Mimix has two independent multiples, A and B, each with four available copies of either audio or CV. Unlike passive multiples, these buffered copies use active circuitry to ensure there is no signal loss or interaction between the signals. 

Additionally, the input impedance is very high so the source signal is essentially unaltered, and precision components are used so that each copy is identical. This is necessary when copying voltages scaled to 1V/oct for pitch control of oscillators and sound sources.

The two multiple sections, A and B, each have two WHITE LEDs which help to visualize the strengths and polarities of the input signals. 

Identical copies are ideal for many applications, but not necessarily for experimentation. For this reason, the fourth output of each multiple is an augmented copy derived from the source signal.


The last of the module’s three sections is a 4-input mixer. The summing circuit combines all four inputs at unity gain to the SUMoutput. This is useful for creating interesting modulations or mixing several audio signals together to a single output.

By default, the first two inputs, [A] and [B], are normalled to the inputs of the two multiples. However, they may be replaced by plugging other signals into their respective input jacks. Inputs C and D are for additional external sources which can be added to the mix.

Similar to the two multiple sections, there are two WHITE LEDs to indicate the strength and polarity of the mixed signal at the SUM output jack.


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