Doepfer A-138b Logarithmic Mixer

8HP Logarithmic mixer for mixing up to 4 signals to one output. Works best with audio, but CVs are possible, too. 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.

Video: https://youtu.be/YjG09AjLLlQ

Product Specs

• Item Number: 9709
• Make: Doepfer
• Model: A-138b
• Condition: Brand New
• Finish: Silver
• Categories: keyboards-and-synths ⇒ eurorack
• Function: Mixer Quad
• Made In: Germany
• MPN: A-138b
• EAN: 4250711113810
• Modular Grid: Eurorack ⓘ ＋
• Dimensions*: 8 HP 35 mm deep
• Power*: 10 mA +12V 10 mA -12V 0 mA 5V

* User contributed details