Doepfer A-138-6 1U Six Channel Mixer Announced

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Doepfer has announced the A-138-6(1U) Six Channel Mixer, a compact 1U module designed for flexible signal routing in Eurorack systems. This preliminary release is slated for summer 2026, offering a simple yet versatile tool for mixing up to six monophonic inputs.

Key Features and Routing Options

The A-138-6(1U) provides six inputs (In 1…6) with linear level controls. Each input can be routed to one of two outputs via a three-position toggle switch. You can assign the signal to Output 1, Output 2, or both simultaneously. This routing flexibility makes it suitable for send/return setups, parallel processing, or creating simple submixes.

All sockets are monophonic, but a solder bridge modification on the PCB can transform Input 1’s level control into a DC offset generator (approx. 0 to +5V) when no patch cable is inserted. This feature is disabled by default, but it adds a useful utility for CV modulation.

Compact Design and Technical Specs

The module fits into 28 HP (141.9 mm) and has a depth of 45 mm. It requires +20 mA on +12V and -20 mA on -12V. The 1U height (44.45 mm) makes it ideal for skiff cases or tight system builds.

Pricing and Availability

The A-138-6(1U) comes in two versions: a Standard Edition at EUR 100.00 and a Vintage Edition at EUR 110.00. Prices are subject to exchange rates for US customers. Release date is summer 2026, without obligation, so availability might shift.

In addition, the module’s straightforward layout and small footprint make it a practical choice for everyday mixing tasks. Moreover, the ability to switch between outputs on the fly opens up creative patching possibilities. Furthermore, the DC offset feature, though requiring a solder bridge, adds an extra tool for modulation without extra modules.

However, the distant release date and lack of stereo inputs might be limiting for some users. Nevertheless, for those seeking a compact routing mixer, this Doepfer offering seems solid.

We will keep you updated as more details emerge.

Pros

  • Flexible routing to two outputs or both
  • Compact 1U design fits skiff cases
  • Optional DC offset generator via solder bridge

Cons

  • Release date far away (summer 2026)
  • Monophonic only, no stereo inputs

More info: Doepfer | A-138-6(1U) Six Channel Mixer