Module A-138u is a simple, low-cost mixer with two units. Each unit is equipped with three inputs and one output. The upper unit has for each input a trimming potentiometer available that allows to adjust the amplification in the range 0...+1 for each input (factory setting is 1 for all inputs). The inputs of the lower unit all have the same amplification +1.

The output of the upper unit is normalled to the first input of the lower unit. That way the module can be used also as a mixer with five inputs: for this the inputs 1, 2 and 3 of the upper unit and the inputs 2 and 3 of the lower unit are used. The sum output for all five signals is then the output of the lower unit. As soon as a plug is inserted into input 1 of the lower unit the module becomes a dual 3-in-1 mixer again.

Inputs and Outputs are DC-coupled, i.e. audio and control signals can be mixed.

Features

  • Mixer for audio signals, e.g. three VCOs preceding a VCF, when the amplifications are adjusted slightly different no signal extinction occurs during the beat of the VCOs
  • Mixer for control voltages (e.g. LFOs, envelope generators, random voltages)
  • Combined with an attenuator bank, a full function mixer is available
  • DC Coupled - works with audio rate and control signals

Product Specs

Condition:
Brand New (New)
Brand
Doepfer
Model
A-138U Dual Micro Mixer
Categories
Eurorack

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Perfect Circuit
Joined Jul 2015
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Perfect Circuit

Burbank, CA, United States
Joined: Jul 2015

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Doepfer A-138U Dual Micro Mixer
$60
+ $4.99 Shipping