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Product information "Doepfer A-135-1 VC Mixer Modul"
Voltage controlled audio mixer. Four channels are mixed to one mono output. Volume of each channel can be modulated by a control voltage - like with four VCAs. Each channel has an attenuator on the audio- and CV-input as well as a gain control. A soft fade-over of 4 audio signals with only one control voltage is possible with the A-144 morphing controller. The new version (since April 2013) is able to process DC signals, has individual outputs per channel and is only 18HP wide.
Input level can be set with the attenuator. The level of each channel can be processed manually and with a CV and the result is available at the individual output, just as a normal VCA. Besides of this the A-135-1 mixes the four channels, the mix is available at the Sum Out.
All audio inputs and CV inputs are normalized from channel 1 to 2, from 2 to 3 and from 3 to 4 as long as no cable is inserted into the input. Via a jumper you can determine if the sum output always mixes all four outputs or only these with their individual output not being in use.
WIth a long trajectory building synths, MIDI keyboards and designing bespoke devices for music pioneers Kraftwerk, Dieter Doepfer decided to design his own modular synthesizer in 1995 based on existing electrical and mechanical specifications of lab equipment he used during his years at university. The official presentation of the system at 1996 Frankfurt Musikmesse caught everyone by surprise and created lots of interest. After Doepfer published the specifications on his website, many instrument designers and engineers saw the potential of the new Eurorack format. Doepfer continues expanding their catalog of over 200 modules (and counting), operating from their modest offices in the outskirts of Munich.
