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Amazon
4.4 (10)
$31.90
Reverb
$31.90 New
$29.99 Used
Thomann
4.7 (3)
$23.40 $23.30 $0.10 · All time low

Average Price: $30

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Based on price data from 3 merchants for "Behringer CP3A-O Oscillator Controller Eurorack Synthesizer Module". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.

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Description

Unlock the full potential of your modular synthesizer setup with the Behringer CP3A-O Oscillator Controller Eurorack Synthesizer Module. This versatile module is inspired by legendary 70s modular synths, offering you a taste of vintage synth circuitry with a modern twist. Designed to integrate seamlessly into your Eurorack system, the CP3A-O is more than just a CV router—it's a powerful tool for sound exploration.

With its 4 CV inputs and 3 CV outputs, the CP3A-O provides incredible flexibility. The module’s 4 switches allow you to easily route control voltages, shaping up to 3 oscillators simultaneously. Switch 4 includes an attenuator, letting you scale an external CV signal for precision control. Whether you're crafting complex waveforms or fine-tuning your synth tones, this module gives your sonic creativity room to expand.

Its compact 8HP footprint ensures it fits snugly into any Eurorack setup, making it a perfect addition for any synth enthusiast looking to expand their sonic palette. The CP3A-O's ability to sum control voltages opens a world of possibilities, from crafting musical waveshapes to unpredictable modulated chaos. Plug it in and discover new dimensions of sound design.

Key Features:

  • 4 Control Voltage (CV) inputs
  • 3 CV outputs with identical signal routing
  • 4 switches for CV signal summing and routing
  • Attenuator for scaling an external CV signal
  • Compact 8HP Eurorack module design
  • Current consumption: 5 mA (+12 V) / 5 mA (-12 V)

Product specs

Type Oscillator Controller Eurorack Module
HP Size 8HP
Power Supply Requires Eurorack case and power supply

FAQs

What is the main function of the Behringer CP3A-O Oscillator Controller?

The Behringer CP3A-O Oscillator Controller is designed to send control voltages (CV) to one or more oscillators, allowing for precise frequency control of VCO modules in a Eurorack setup.

How many CV outputs does the Behringer CP3A-O have?

The Behringer CP3A-O features three parallel CV outputs, which can drive multiple 921A/B oscillator modules simultaneously.

Does the Behringer CP3A-O require any specific power supply?

Yes, the Behringer CP3A-O requires a Eurorack case and power supply to function properly.

Can the Behringer CP3A-O control multiple oscillators at once?

Yes, the Behringer CP3A-O can control multiple oscillators at once through its three switched and summed CV inputs and outputs.

What is the size of the Behringer CP3A-O module in HP?

The Behringer CP3A-O module is 8HP in size, making it compact for integration into Eurorack systems.

Behringer

Behringer

CP3A-O Oscillator Controller & 992 Control Voltages

Video thumbnail for CP3A-O Oscillator Controller & 992 Control Voltages by Behringer

CP3A-O Oscillator Controller & 992 Control Voltages

Behringer

Behringer

Reviews

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Behringer CP3A-O Oscillator Controller Eurorack Synthesizer Module.

Features and functionality

  • The Behringer CP3A-O uses voltages from 0v to 6v, different from the standard Eurorack 0v to 10v, affecting compatibility with some modules.

    Source
  • The 961 Interface module can convert V-Trigs to S-Trigs, essential for using the envelope generators properly with the CP3A-O.

    Source

Mods and upgrades

  • Owners recommend adding a Doepfer A-145-4V Quad LFO to generate proper 5v square wave clocks for better compatibility with Eurorack modules.

    Source
  • Replacing the 2HP blanks with 2hp TM (Turing Machine), 2hp Euclid (Euclidian Rhythms), and 2hp Tune (Quantizer) enhances generative music capabilities.

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Use cases and applications

  • For ambient music, use slow modulation of filters and slow droning oscillators controlled by a slow sequence to create soundscapes.

    Source
  • Connecting the 921A oscillator driver to 921B oscillators allows for LFO frequencies suitable for ambient patches.

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Setup and maintenance

  • It's advised to start with a low modular output volume when connecting to high impedance inputs of guitar effects units to avoid issues.

    Source

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