Doepfer A-138c Polarizing Mixer, four channel mixer for mixing control voltages, add or substract four voltages to the Signal of the Output, Eurorack Format; Width 8 TE; Depth: 35mm; Current: +20A (+12V) / -20Ma (-12V)
this mixer works as you expect, but some minor addition would make much more useful. for instance some leds to monitor the in and out, and having knobs with a center "click" so that you know you are at the zero position.
also after playing with some make noise module i tend to miss their cleverness. for instance when you unplug one input of such mixer on a make noise, it becomes an offset source, which comes really handy in many cases.
that said, the module follows the doepfer philosophy : make one thing at a time, with a clear and simple approach. in that regard this module is a prefect match ! but i would recommend also looking at other makers of modules that might have complete/complex product.
This module handels cv signals very well, but mixing audio signals is pretty hard. At the moment I need to, but the problem is that the zero-point is very hard to find, so quickly muting channels is a bit hard.
But the module handels CV very well. It could even actually be seen as an improvement on the offset generator as the first knob can be used as a voltage offset, while the other 4 inputs can still be used to generate offsets and be combined to complex patterns for note-sequences or modulations.
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