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Doepfer A-143-4 Quad VCLFO/VCO

$243.81 Price Tier: Standard

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Page last updated Jul 04, 2026

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$243.81 4 available New

$262.71 1 available Used

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Average Price: $253

Standard/Professional

$149

$350+

Price Tier

In the Modular Synthesizers category, Doepfer A-143-4 Quad VCLFO/VCO is priced in the Standard/Professional range. This is quality gear at a fair price point, suitable for beginners, hobbyists, and pros alike.

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Description

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Dive into the world of modular synthesis with the Doepfer A-143-4 Quad VCLFO/VCO, a versatile module designed to enhance your sound palette. This module is a powerhouse for both low-frequency oscillation and voltage-controlled oscillation, making it a staple for any modular setup. Featuring four independent VCLFO/VCOs, the A-143-4 offers unparalleled modulation capabilities. Whether you're crafting intricate soundscapes or driving rhythmic sequences, this module provides the flexibility and precision needed to bring your musical ideas to life.

Each section of the A-143-4 can function as a VCO, producing audio-rate frequencies, or as an LFO for more traditional modulation duties. The quadrature mode allows adjacent oscillators to run at phase-shifted outputs, opening up possibilities for complex waveforms and dynamic textures. With individual outputs for each channel, as well as a mix output, this module is perfect for creating layered sounds or intricate modulations without sacrificing control.

Ideal for experimental musicians and sound designers alike, the A-143-4 is a testament to Doepfer's commitment to quality and innovation. Its intuitive interface ensures that even beginners can quickly harness its full potential, while seasoned modular enthusiasts will appreciate the depth and versatility it brings to any setup.

Key Features:

Four independent VCLFO/VCO sections
Quadrature mode for phase-shifted outputs
Individual outputs and mix output
CV inputs for frequency control
Capable of LFO and audio-rate oscillation
Robust design crafted for modular synthesizers
Ideal for both beginners and advanced users

Product specs

Brand	Doepfer
Model	A-143-4 Quad VCLFO / VCO
Finish	Silver
Year	2010s
Made In	Germany
Categories	Eurorack Modules and Cases, Synth Modules
Horizontal Pitch	22HP
Modular Synth Format	Eurorack
Polyphony	1 Voice
Synth Module Function	LFO, Oscillator

FAQs

What is the primary function of the Doepfer A-143-4 Quad VCLFO/VCO?: The Doepfer A-143-4 functions as both a voltage-controlled low-frequency oscillator (VCLFO) and a voltage-controlled oscillator (VCO), offering versatile modulation and audio generation capabilities for Eurorack modular synthesizers.
How many oscillators does the Doepfer A-143-4 Quad VCLFO/VCO have?: The Doepfer A-143-4 features four independent oscillators, each capable of operating as either a VCO or VCLFO, making it ideal for complex modulation and sound design tasks.
Can the Doepfer A-143-4 be used for both audio and modulation purposes?: Yes, the Doepfer A-143-4 can be used for both audio generation as a VCO and modulation tasks as a VCLFO, providing flexibility in sound design and synthesis.
What is the size of the Doepfer A-143-4 in a Eurorack setup?: The Doepfer A-143-4 occupies 22HP in a Eurorack modular synthesizer setup, making it a compact yet powerful addition to any modular system.
Is the Doepfer A-143-4 suitable for beginners in modular synthesis?: While the Doepfer A-143-4 offers advanced features, its straightforward design and dual functionality as a VCO and VCLFO make it accessible to both beginners and experienced users in modular synthesis.

Reviews

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Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Doepfer A-143-4 Quad VCLFO/VCO.

Features and functionality

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The Doepfer A-143-4 is praised for its versatility, functioning well as both VCO and VCLFO, making it a flexible choice for creative patching.
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The A-143-4 Quad VCLFO/VCO offers notable flexibility with its matrix mixer, particularly useful for creating complex modulation and feedback loops.
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Use cases and applications

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Owners highlight its fun factor, emphasizing its standalone patching capabilities and integration with filters, sample and hold, and utilities.
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The module is highlighted as particularly effective when combined with a sequential switch like the A-151, expanding rhythmic sequencing possibilities.
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User experience

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Enthusiasts appreciate the module’s ability to be used in a wide range of patching scenarios, from basic modulations to complex sound design.
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New users find the A-143-4 intuitive, even as they explore its capabilities alongside other Doepfer modules like the Phase Locked Loop and Wasp Filter.
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Comparisons

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Compared to more complex oscillators, the Doepfer A-143-4 is favored for its straightforward analog VCO utility without the need for fancy digital presets.
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Users compare the Doepfer A-143-4 favorably with the A-138m matrix mixer for its ability to enhance sound design through versatile patching options.
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