Doepfer A-138m Matrix Mixer The Doepfer A-138m is a versatile 4x4 matrix mixer for Eurorack modular synthesizers, allowing four input signals to be flexibly mixed and routed to four separate outputs. Each of the 16 rotary knobs controls the level of the connection between one input and one output, providing precise control over your signal routing. Suitable for both audio and control voltage (CV) signals, the matrix design enables complex signal paths without the clutter of multiple patch cables. This makes the A-138m an essential tool for live performance, sound design, and modular experimentation. Its compact 12 HP form factor integrates seamlessly into any Eurorack system, offering an intuitive interface for fast and flexible mixing. Key Features: 4 inputs and 4 outputs with flexible matrix routing 16 level controls for individual signal mix Compatible with audio and CV signals Compact 12 HP width Ideal for live performance and studio use Solid build quality from Doepfer
