Doepfer A-138c Polarizing Mixer – Discontinued

The A-138c was a 4-channel polarizing mixer designed for Eurorack modular systems. Each input featured a bipolar attenuator, allowing both positive and negative gain centered around 0, making it ideal for inverting and mixing CV or audio signals creatively.

Though no longer in production, it remains a sought-after module for those wanting compact and versatile signal manipulation.

Key Features:

• 4-channel polarizing mixer with center-detent knobs

• Suitable for CV and audio

• Outputs the sum of all inputs

• 8 HP wide

• Discontinued – consider replacements like the A-183-2