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- Order number: 120124
- Depth: 20
The A-138m is a 4x4 mix matrix where you can mix up to four incoming signals in all possible variations to four outgoing switches. The Signals can be audio and/or voltage controls.
For each column of the A-138m you can chose whether the potentiometers are uni-polar and thus work as attenuators or if they work in a bi-polar mode, turning into polarizers.
Setting a jumper determines if the potentiometers of the topmost row generate an adjustable DC voltage (working as offset generators) if no cable is inserted into the upper input socket. The function is tidentical to A-138a/b.
|Power consumption +12V:||30|
|Power consumption -12V:||30|
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.