Doepfer A-138m Matrix Mixer
4x4 matrix mixer for flexible signal routing
20 HP Eurorack module
The A-138m by Doepfer is a 4x4 matrix mixer that allows any combination of 4 inputs to be routed to 4 outputs with independent level control at each junction. With 16 attenuator knobs arranged in a grid, it provides complete signal routing flexibility for audio or CV signals. It is an essential utility for complex patches requiring flexible signal distribution and mixing.
Features
- 4 signal inputs
- 4 mixed outputs
- 16 level controls in a 4x4 matrix
- Route any input to any output independently
- Works with both audio and CV signals
- Passive attenuation at each crosspoint
Controls & Jacks (28)
- Mix 1A — Mix level of Input 1 to Output A
- Mix 1B — Mix level of Input 1 to Output B
- Mix 1C — Mix level of Input 1 to Output C
- Mix 1D — Mix level of Input 1 to Output D
- Mix 2A — Mix level of Input 2 to Output A
- Mix 2B — Mix level of Input 2 to Output B
- Mix 2C — Mix level of Input 2 to Output C
- Mix 2D — Mix level of Input 2 to Output D
- Mix 3A — Mix level of Input 3 to Output A
- Mix 3B — Mix level of Input 3 to Output B
- Mix 3C — Mix level of Input 3 to Output C
- Mix 3D — Mix level of Input 3 to Output D
- Mix 4A — Mix level of Input 4 to Output A
- Mix 4B — Mix level of Input 4 to Output B
- Mix 4C — Mix level of Input 4 to Output C
- Mix 4D — Mix level of Input 4 to Output D
- Input 1 — Signal input 1
- Input 2 — Signal input 2
- Input 3 — Signal input 3
- Input 4 — Signal input 4
- Output A Mode — Switches Output A between unipolar and bipolar operation
- Output A — Mix output A
- Output B Mode — Switches Output B between unipolar and bipolar operation
- Output B — Mix output B
- Output C Mode — Switches Output C between unipolar and bipolar operation
- Output C — Mix output C
- Output D Mode — Switches Output D between unipolar and bipolar operation
- Output D — Mix output D
Explore the interactive A-138m Matrix Mixer panel on BleepDex — tap any control to learn what it does.
