Doepfer A-131
Professional music gear - detailed information and where to buy
Doepfer
A-131
Product Info
* Prices may vary. Check retailer for current pricing and availability.
The A-131 is a workhorse VCA, plain and simple. It's a fantastic, affordable entry point into Doepfer's modular world, and perfect for anyone building a budget-friendly Eurorack system needing a solid, predictable gain control for a single signal. Don't expect fancy extras, just reliable performance.
Product Description
- Doepfer A-131
- VCA (Voltage Controlled Amplifier)
- Exponential VCA
- Primarily for controlling audio signals
- Width: 8 HP
- Depth: 45 mm
- Power requirements: +20 mA (+12 V) / -10 mA (-12 V)
PROS
- • Solid, reliable Doepfer build quality – feels substantial.
- • Exponential response curve offers smooth, natural gain reduction.
- • Low power consumption keeps your PSU happy.
- • Compact 8HP footprint – ideal for dense modular setups.
CONS
- • Limited to a single channel – not suitable for complex routing.
- • Basic feature set; lacks attenuators or offset.
- • The linear response isn’t as versatile for some effects.
Product Video
Key Features
Channels
1
Response
Exponential
HP Width
8
Depth
45 mm
Power Draw
+20 mA / -10 mA
CV Inputs
1
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Frequently Asked Questions
The 921 is a much more feature-rich VCA with attenuators and offset; the A-131 is simpler and more basic, but also much more budget-friendly.
Yes, the exponential response is generally preferred for audio, providing a smoother, more natural feel than a linear curve when reducing gain.
No, the A-131 is a single-channel VCA, meaning it can only control one audio or CV signal at a time.
