The Doepfer A-138u Dual Micro Mixer (2x3) is an easy-to-use dual mixer that features 3x inputs and a single output in each. The top mixer has a trimming potentiometer per input that can be employed as an attenuator whilst allowing for the adjustment of amplification range between 0...+1. This is only true of the 3rd input in the lower section. The default setting is amplification = 1 for all inputs.
The upper unit’s output is normalised to the 1st input of the lower unit. This means the module can alternatively be used as a mixer with 5x inputs: for this Inputs 1, 2 and 3 of the upper unit and Inputs 2 and 3 of the lower unit are used. The sum output for all 5x signals then becomes the output of the lower section. Return the module to a dual 3-in-1 mixer again by inserting a plug into Input 1 of the lower section.
Audio and control signals can be mixed (In/Outputs are DC coupled).
The main features of the Doepfer A-138u Dual Micro Mixer (2x3) include:
This is Doepfers alternative to Intellijel Unity Mixer. In fact, Ive sold my Unity Mixer to fund the A-138u. Although Ive got a 16 channel outboard mixer, this little buddy works great for grouping/mixing different waveforms before sending to filters and VCAs. It also works great as a trigger/gate combiner (OR logic). Every Eurorack system deserves one or two of these!
Its a very slim and useful 2x3 mixer module for eurorack. Modules are getting smaller and narrower than before to fit for compact needs from users. Ive compared with other similar modules and this is the most reasonable price and useful one if you dont mind it lacks of knobs.