Doepfer A-138j
Professional music gear - detailed information and where to buy
Doepfer
A-138j
Product Info
Article Number:
555453
Brand:
Doepfer
Model:
A-138j
Category:
Mixer, Attenuator Modules
Price:
$114.40
* Prices may vary. Check retailer for current pricing and availability.
The A-138j is a solid, no-frills mixer that's perfect for patching complex modulation sources or attenuating signals. It's a workhorse module, offering a reliable and compact solution for those who need basic mixing and attenuation in their Eurorack setup, especially those already familiar with Doepfer's design philosophy.
Product Description
- Doepfer A-138j
- Eurorack Module
- Inverting/interrupting mixer
- 4-Channel mixer with level control 3-way switch per channel (inverted
- mute
- non-inverted)
- Channel 1 can generate an offset voltage of +/-5V
- Individual outputs for all channels for use as a 4-channel attenuator
- Two parallel mix outputs
- Power consumption: 20mA (+12V) / 20mA (-12V)
- Width: 6 U
- Depth: 40 mm
PROS
- • Excellent channel isolation minimizes crosstalk, crucial for complex patching.
- • The +/-5V offset on Channel 1 provides unique modulation possibilities.
- • Robust Doepfer build quality ensures long-term reliability in a modular environment.
- • Individual outputs function as attenuators, offering flexible signal shaping.
CONS
- • Limited channel count compared to larger, more modern mixers.
- • The inverting/interrupting design can be confusing for beginners.
- • The 6HP width might be restrictive in smaller Eurorack cases.
Product Video
Key Features
Channels
4
Type
Inverting/Interrupting Mixer & Attenuator
HP Width
6
Depth
40mm
Power Draw
20mA (+12V) / 20mA (-12V)
Connections
12 x 3.5mm TS
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Frequently Asked Questions
Interrupting cuts the channel signal completely when the switch is in the middle position, providing a hard on/off control instead of a gradual fade.
While it can sum signals, it's not designed as a dedicated summing amplifier; the inverting nature impacts the overall gain.
It's a capable mixer, but the inverting/interrupting design might be a bit overwhelming for absolute beginners; a simpler, straight-forward mixer might be more approachable initially.
