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Doepfer A-185-2 Precision CV Adder

$77.00 to $115.00 Price Tier: Budget

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Page last updated Jul 01, 2026

Pricing and availability

We compare 600+ stores and found this item at 3 stores. Prices updated July 1, 2026.

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Price

$115.00

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5.0 (1)

$79.54 6 available New

$95.32 1 available Used

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4.8 (24)

$77.00

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Average Price: $92

Budget/Beginner

$149

$350+

Price Tier

In the Modular Synthesizers category, Doepfer A-185-2 Precision CV Adder is priced in the Budget/Beginner range. This is great gear to get started with or for creators on a budget.

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Based on price data from 2 merchants for "Doepfer A-185-2 Precision CV Adder". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.

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Description

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The Doepfer A-185-2 Precision CV Adder is a versatile powerhouse for any modular synthesizer enthusiast. Tailored for those who love to experiment with soundscapes, this module is an indispensable tool for transposing sequences. By patching your sequencer into any of its inputs, you can effortlessly add or subtract up to one volt from your sequence, a feature that allows for creative manipulation of pitch and tone.

What sets the A-185-2 apart is its precision-engineered design that ensures the input voltages remain unaltered when the Level 1 control is set to 0. This guarantees that your sound maintains its integrity, allowing for clear and accurate adjustments. With 4 CV inputs—one featuring a controller and three without—this module offers extensive patching possibilities. Its 3-way switches provide options for voltage addition, subtraction, or neutral, making it a dynamic component of your Eurorack setup.

Whether you're looking to transpose a melody up a fourth or down a fifth, the Doepfer A-185-2 provides the tools for precise and imaginative sound design. Its small footprint, with a size of just 6HP wide and 50mm deep, ensures it won't take up valuable space in your rack while delivering a substantial impact on your creative process.

Key Features:

Voltage adder/subtracter module for Eurorack modular synthesizers
Precision design ensures input voltages are unaltered at Level 1 set to 0
4 CV inputs (1 with controller, 3 without)
3-way switches for addition, subtraction, or off
Includes 3 non-inverted outputs and 1 inverted output
Requires +10mA (+12 volts), -10mA (-12 volts)
Compact size: 6HP wide, 50mm deep

Product specs

Type	CV Adder/Subtracter Eurorack Module
Depth	1.96" (50mm)
HP Size	6HP
Power Usage	±12V DC, 10mA
Power Supply	Requires Eurorack case and power supply

FAQs

What is the primary function of the Doepfer A-185-2 Precision CV Adder?: The Doepfer A-185-2 Precision CV Adder is designed to add and subtract control voltages in a modular synthesizer setup, allowing for precise voltage control and manipulation.
How does the Doepfer A-185-2 integrate into a Eurorack system?: The Doepfer A-185-2 is a 6HP Eurorack module that requires a Eurorack case and power supply, operating on ±12V DC with a power usage of 10mA.
Can the Doepfer A-185-2 handle both positive and negative CV signals?: Yes, the Doepfer A-185-2 can process both positive and negative control voltage signals, making it versatile for various modulation tasks.
What are the power requirements for the Doepfer A-185-2?: The Doepfer A-185-2 requires a Eurorack power supply with ±12V DC and consumes 10mA of power.
How deep is the Doepfer A-185-2 module, and will it fit in my case?: The Doepfer A-185-2 has a depth of 1.96 inches (50mm), making it compatible with most standard Eurorack cases.

Videos

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20Objects

Doepfer A-185-2 As a Sequencing Aid

20Objects

Patching With Doepfer Precision Adder | A-185-2

Braintree56

Doepfer A-185-2 Precision CV Adder

Detroit-Berlin

Let's Patch | Making Complex Sequences with Step Sequencers & Precision Adder (Doepfer A-185-2)

Disparity Bit

Exploring the Doepfer A-185-2.

musicalfungus

Reviews

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PROS

Expands sequencers by adding or subtracting voltages easily
Versatile unit essential for every modular system
Affordable yet highly functional
Supports playing more than 2-3 oscillators simultaneously
Rock-solid build quality
Integral to enhancing rig functionality

CONS

Requires jumper removal when using multiple units to avoid shared CV bus

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Doepfer A-185-2 Precision CV Adder.

Setup and maintenance

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Owners recommend checking for loose jumpers, ICs, and power headers if experiencing voltage inversion issues with the module.
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Features and functionality

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The A-185-2 can utilize the CV bus, but issues may arise if other modules input CV on the same bus.
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The module's switches can invert signals unexpectedly, suggesting possible switch malfunction impacting performance.
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The A-185-2 has four inputs, one with an attenuator, allowing for versatile voltage addition or subtraction, enhancing its functionality in modular setups.
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Unpatched inputs on the A-185-2 can be used to add or subtract an octave (1 Volt), providing a dynamic, playable feature for live performance.
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The AJH Precision Voltages module is recommended for users seeking additional functionality beyond the A-185-2’s capabilities.
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Frap Tools 333 is highlighted for its ability to precisely sum multiple inputs, offering an alternative method to achieve the desired semitone stacking.
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The Quantus Pax is a notable alternative for its multiple precision adders combined with a global transpose input, catering to users needing extensive control.
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Use cases and applications

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Even with external CV sources like the Korg SQ-1, the A-185-2 may invert signals, indicating the issue isn't source-dependent.
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The module can be used to modulate pitch across several octaves with an LFO, facilitating complex arpeggio patterns.
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The Droid Master is noted for its flexibility in handling complex CV tasks, potentially substituting multiple precision adders.
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User experience

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Despite troubleshooting issues, owners find the Doepfer A-185-2 a super fun module to work with.
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Comparisons

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Compared to modules like the Quantus Pax and VPME T-43, the A-185-2 is often mentioned for its practical input switching and octave manipulation capabilities.
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The Instruo Harmonàig, while similar, offers fixed outputs like 3rd, 5th, and 7th intervals, unlike the customizable semitone control of the A-185-2.
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The VPMe.de T43 is suggested for those wanting multiple precision adders, as it is affordable enough to consider purchasing several units.
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