Doepfer A-138M
Professional music gear - detailed information and where to buy
Doepfer
A-138M
Product Info
Article Number:
240112
Brand:
Doepfer
Model:
A-138M
Category:
Mixer, Attenuator Modules
Price:
$163.90
* Prices may vary. Check retailer for current pricing and availability.
The A-138M is a seriously useful little mixer for any Eurorack system. Its matrix design lets you route signals in creative ways, and the bipolar/unipolar options give you extra control over your sound. Perfect for those wanting to experiment with complex modulation routing or build compact, feature-rich patches.
Product Description
- Doepfer A-138M
- Matrix Mixer
- With 4 rows and 4 columns
- Unipolar / Bipolar mode switchable on each column
- Suitable for both control voltage and audio
- Width: 20 HP
- Depth: 20 mm
- Power requirements: +30 mA (+12 V) / -30 mA (-12 V)
PROS
- • Excellent signal routing flexibility with its matrix design
- • Unipolar/Bipolar switching adds tonal shaping possibilities
- • Robust Doepfer build quality ensures long-term reliability
- • Compact 20HP footprint ideal for space-constrained modular setups
CONS
- • Limited number of input/output channels compared to larger mixers
- • Bipolar mode can introduce phase issues if not carefully managed
- • Can feel a bit cramped when patching complex signal flows
Product Video
Key Features
Channels
16 (4 rows x 4 columns)
Type
Matrix Mixer / Attenuator
HP Width
20
Depth
20 mm
Power Draw
+30 mA / -30 mA
Connections
16 x 3.5mm TS
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Frequently Asked Questions
Bipolar mode inverts the signal, which can be used for phase cancellation or creating interesting stereo effects. Careful attention to signal flow is needed to avoid unwanted phase issues.
Yes, absolutely, though it's more than just a mixer. It excels at routing and attenuating both audio and CV signals for complex modulation scenarios.
While it’s versatile, the matrix routing can be a bit daunting for absolute beginners. It's best suited for those with some basic modular understanding and a desire for signal flexibility.
