Doepfer A-139-2 Headphone Amplifier
Professional music gear - detailed information and where to buy
Doepfer
A-139-2 Headphone Amplifier
Product Info
Article Number:
367624
Brand:
Doepfer
Model:
A-139-2 Headphone Amplifier
Category:
Interface Modules
Price:
$64.90
* Prices may vary. Check retailer for current pricing and availability.
The A-139-2 is a no-nonsense headphone amp for your modular setup. It's a fantastic, affordable solution for monitoring multiple audio sources simultaneously – perfect for those patching complex soundscapes and needing a reliable, clean signal without fuss. The normalization feature is a real time-saver for quick comparisons.
Product Description
- Doepfer A-139-2 Headphone Amplifier
- 2-Channel Headphone Amplifier
- In the Eurorack module format
- 2 Inputs with separate level controls
- Input 1 is normalised to input 2 (switched jack input 2)
- Shared volume control
- Headphone output 6.3 mm jack
- Max. output power approx. 2 W per channel (at 8 ohm load)
- Width: 6 HP / 6 HP / 30 mm
- Depth: 40 mm
PROS
- • Solid Doepfer build quality; feels robust and reliable
- • Normalization simplifies layering sounds from two sources
- • Provides ample power for most headphones, even high-impedance models
- • Compact 6HP footprint saves valuable space in tight Eurorack racks
CONS
- • Shared volume control can be inconvenient for independent level adjustments
- • 6.3mm jack is standard but can feel a bit dated
- • Lacks advanced features like impedance matching or gain staging
Product Video
Key Features
Type
2-Channel Headphone Amplifier
Connections
2 x 6.3mm headphone outputs, 2 x 6.3mm input jacks
HP Width
6
Depth
40mm
Power Draw
50mA
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Frequently Asked Questions
The normalization is a passive connection; it shouldn't introduce any audible artifacts or coloration. It's simply routing a signal from one input to the other.
While 2W per channel is sufficient for most headphones, it's not as powerful as some high-end, modern amps; it's designed for general monitoring, not driving very demanding headphones.
Absolutely, it handles low frequencies cleanly, but be mindful of your headphone's capabilities; very bass-heavy signals can sometimes distort at higher volumes.
