Doepfer A-138bv (Vintage Edition)


Vintage Edition with a black faceplate and custom knobs.

Logarithmic mixer for mixing up to four signals to one output. Works best with audio signals, but mixing CVs is possible, too. If there´s no jack in input 1, you can use the uppermost potentiometer as an offset control.



Due to it´s exponential characteristic the A-138a is well suited to mix audio signals. Control voltages can be mixed as well but you have accept an imperfect behaviour of the pots.

If the first input is not connected you can use the first potentiometer as an offset control for creating a constant offset voltage. By a jumper you can determine if the offset is active and if it goes from -5V to 0V or from 0V to +5V.


four inputs, one output


3U Eurorack module, 8HP wide, 35mm deep
10mA current draw

0.12 kg
Article Number
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€ 19% VAT excl. €57.98 € 19% VAT incl. €69.00
Excl. 19% VAT, Excl. shippingLieferzeit 1