Doepfer A-138a Mixer Linear
Professional music gear - detailed information and where to buy
Doepfer
A-138a Mixer Linear
Product Info
Article Number:
114504
Brand:
Doepfer
Model:
A-138a Mixer Linear
Category:
Mixer, Attenuator Modules
Price:
$73.70
* Prices may vary. Check retailer for current pricing and availability.
The A-138a is a no-frills, incredibly useful mixer for Eurorack. It’s a fantastic foundation for any modular system, especially for those prioritizing clean signal paths and precise control voltage mixing. Ideal for beginners learning the ropes or experienced users needing a reliable, compact utility module.
Product Description
- Doepfer A-138a Mixer Linear
- Eurorack module
- 4 Channels
- Suitable for control voltages and audio signals
- One attenuator per channel
- Eurorack format
- Width: 8HP / 40.3 mm
- Depth: 35 mm
- Power requirements: +10 mA (+ 12V) / -10 mA (-12V)
PROS
- • Excellent linearity for predictable mixing and attenuation.
- • Robust Doepfer build quality – feels solid and dependable.
- • Compact 8HP footprint maximizes space in tight Eurorack systems.
- • Simple, clean design avoids unnecessary complexity for straightforward use.
CONS
- • Limited to four channels; not suitable for large, complex setups.
- • Basic feature set lacks advanced routing or EQ capabilities.
- • No level metering; requires external monitoring for accurate gain staging.
Product Video
Key Features
Channels
4
Type
Mixer, Attenuator
HP Width
8
Depth
35 mm
Power Draw
+10 mA / -10 mA
Connections
16 x 3.5mm TS
Similar Products
Ibanez GRG320FA-TVT
ST Style Guitars
$439
Electric Guitar, Body: Poplar, Top: Basswood with Art Grain in flamed maple look, Bolt-on neck:...
NANO Modules ST-OUT
Interface Modules
$149
Eurorack Module, Stereo output module for Eurorack systems, Switchable drive level (soft / hard),...
Frequently Asked Questions
The A-138a offers surprisingly good linearity for its price point, though high-end mixers often include more sophisticated internal components for even greater precision.
It’s primarily designed for Eurorack voltages, but it *can* handle line-level audio; however, be mindful of headroom and potential distortion at higher levels.
While it’s a fantastic mixer, its simplicity means it lacks advanced features. If you need EQ, panning, or complex routing, consider a more feature-rich module.
