Shades (2020)

£89.00 (£74.17 ex VAT)

3-Channel Cascading Mixer, Attenuvertor and DC Offset Generator

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NOTE: The 2020 version is identical to the previous one internally, but features white knobs and dual segment LEDs for each channel.

Mutable Instruments SHADES provides 3 channels of audio/CV processing which can be configured either as active attenuators or as attenuverters.

A bicolor LED monitors the polarity and intensity of the audio or CV signal on each output.

Unconnected inputs are normalized to an internal precision voltage reference, which can produce either a +5V or +10V constant voltage.

Normalization on the outputs allows the module to be used as a mixer or offset generator: when no jack is inserted in an output, the signal from this output is summed into the next output. Combined with the internal voltage reference, this allows the module to be used as a CV offset control.

Patch examples:


  • When output 1 is left unconnected, the signal on output 2 is the sum of channels 1 and 2. Channel 3 can be used for another purpose (attenuation, attenuversion, or constant CV generation).
  • When output 1 and 2 are left unconnected, the signal on output 3 is the sum of channels 1, 2 and 3.

Offset Generation

  • Leave channel 1’s input and output unconnected, and connect a CV source to channel 2’s input.
  • Channel 2’s output will contain a scaled and offset copy of the input CV.
  • Channel 1’s level knob will control the offset and channel 2′s level knob will control the signal scale and polarity.


  • Individual Signal Attenuation
  • Signal Inversion

Shades never gets in the way: precision voltage reference for the +10V/+5V, low-noise/distortion op-amps (with low offset as an extra bonus), and 0.1% resistors everywhere making it usable for transposing pitch CVs too.

Width: 6hp
Depth: 25mm
Power: 15mA @ +12V / 15mA @ -12V