Mixer (Logarithmic)

Module A-138 is a four channel mixer, which can be used with either control voltages or audio signals. Each of the four inputs has an attenuator, and there's a master attenuator, so that the mixer can be used at the end of the audio chain - ie. it can be used to interface directly with an external mixer, amplifier, etc.

The module can be supplied in two versions:

A-138 a: potentiometers with linear response, so especially suitable for control voltage mixing.

A-138 b: potentiometers with logarithmic response, so especially suitable for audio signal mixing.

For more detailed information please look at the English user's manual: http://www.doepfer.de/a100man/a138man.pdf


  • 10 mA +12V
  • 10 mA -12V
  • 0 mA 5V
  • 35 mm deep
  • Ø 3.47 (78 Votes) Average Rating

This Module is currently available.

8 HP Mixer
submitted Oct 6th 2012, 13:36 by gogoolplex | last Change Sep 29th 2016, 17:45 by modulargrid

Date Region Description Price Seller
USAThe A-138 is great for mixing audio signals such as multiple oscilators or pr...$80.00 View
EUThe overall condition of this *Doepfer A-138b* is *like new* ###technical ...€40,00saylar1988 View
USAThe overall condition of this *Doepfer A-138b* is *good* ###technical cond...$55.00jamesroemer View
USA4 channel mixer. This is the exponential version. Great shape. I am clearing ...$70.00 View

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