Pricing and availability

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Average Price: $1,036

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$149

$350+

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Based on price data from 1 merchant for "Buchla 266e Source of Uncertainty". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.

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Description

Unlock the power of unpredictability with the Buchla 266e Source of Uncertainty. This modular synthesizer module is not just a tool—it's an invitation to explore the unknown and embrace the chaos that can breathe life into your music. At its core, the 266e is a pioneering generator of random voltages, providing a diverse palette of noise types and probability-driven modulations. From white noise to fluctuating random voltages, this module presents a spectrum of sonically rich possibilities that can seamlessly integrate into your existing setup.

The 266e doesn’t merely produce random sounds; it offers a controlled environment where randomness can be shaped, stored, and recalled, thanks to its voltage-controlled parameters. Whether you're looking to inject a hint of unpredictability into your compositions or desire a complete overhaul of your sonic landscape, the 266e delivers with precision. Its ability to create quantized and stored random voltages ensures that your creative expressions are both unique and repeatable.

Crafted under the visionary legacy of Don Buchla, this module continues to push the boundaries of electronic music synthesis, providing musicians with the tools to venture beyond conventional soundscapes. Buchla U.S.A. remains committed to maintaining this legacy, offering both innovative designs and classic instruments that inspire a new generation of electronic music creators.

Key Features:

  • Voltage control for comprehensive modular integration
  • Diverse noise outputs, including white noise and musically flat noise
  • Fluctuating Random Voltages with adjustable bandwidth
  • Quantized and Stored Random Voltages for versatile modulation
  • Preset recall capability with remote enable function (requires additional Buchla modules)

Product specs

Type Buchla Source of Uncertainty Module
Analog/Digital Analog
Analog Outputs 4 x 3.58mm
Other I/O 6 x CV in, 6 x CV out, 4 x Pulse in
CV Connector Buchla Banana
Width 1-panel
Power Supply Requires Buchla Case and Power Supply

FAQs

What is the primary function of the Buchla 266e Source of Uncertainty module?

The Buchla 266e Source of Uncertainty module is designed to generate random voltages and fluctuating signals, providing a range of unpredictable modulation sources for modular synthesis setups.

How does the Buchla 266e integrate with other modular synthesizer systems?

The Buchla 266e integrates with other systems using Buchla Banana connectors for control voltage (CV) inputs and outputs, allowing seamless interaction with compatible Buchla modules.

What are the output options available on the Buchla 266e Source of Uncertainty?

The Buchla 266e features four analog outputs, each with a 3.58mm size, providing diverse random voltage outputs for various modulation needs.

Is the Buchla 266e Source of Uncertainty an analog or digital module?

The Buchla 266e is an analog module, offering traditional analog synthesis techniques for generating random modulation sources.

Does the Buchla 266e require a specific power supply to operate?

Yes, the Buchla 266e requires a Buchla Case and Power Supply to function properly within a modular synthesizer setup.

boobtube356

boobtube356

Buchla Source of Uncertainty

Video thumbnail for Buchla Source of Uncertainty by boobtube356

Buchla Source of Uncertainty

boobtube356

boobtube356

Video thumbnail for 78 Source of Uncertainty by 7thDanSound

78 Source of Uncertainty

7thDanSound

7thDanSound

Video thumbnail for Uncertain Buchla featuring the Source of Uncertaity 266e by Rudetee

Uncertain Buchla featuring the Source of Uncertaity 266e

Rudetee

Rudetee

Video thumbnail for Buchla 266e Source of Uncertainity & Verbos 258v Dual Oscillator (edited version) by DJjondent

Buchla 266e Source of Uncertainity & Verbos 258v Dual Oscillator (edited version)

DJjondent

DJjondent

Reviews

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Buchla 266e Source of Uncertainty.

Features and functionality

  • The Buchla 266e includes stepped and smooth randomness, offering varied timbre and CV amplitude variations crucial for natural, non-forced sound design.

    Source
  • The low pass gate (LPG) in Buchla systems acts like a resonant low pass filter combined with a VCA, perfect for emulating percussion sounds like bongos and banjos.

    Source
  • Users appreciate the interconnected nature of the Sapel’s module halves, noting the musical link between smooth fluctuating random voltage and random gate occurrences.

    Source
  • Dnipro Krait's attenuation on the output is valued for its utility, as many modules lack this feature, enhancing modulation control.

    Source

User experience

  • Users note that the Buchla's touch controllers allow for dynamic expressivity beyond traditional keyboards, enabling unique compositions and performances.

    Source

Use cases and applications

  • The 266e's built-in randomness is essential for creating generative and experimental sounds, lending itself to experimental music rather than traditional compositions.

    Source
  • Dedicated random modules, like the Buchla Source of Uncertainty, provide multiple outputs and features such as noise sources and sample & hold, surpassing basic random voltage sources.

    Source

Comparisons

  • Buchla systems, unlike Moogs, focus on complex timbres through FM and wave shaping, making them more suited for experimental and atonal music styles.

    Source
  • The Frap Tools Sapel is highlighted as comparable to the Buchla 266e, praised for its interconnected outputs and flexible random voltage control.

    Source
  • Mimetic Digitalis offers four channels of stepped modulation, noted for its performance features, making it a robust alternative to traditional random modules.

    Source

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Artist usage

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See how Morton Subotnick uses Buchla 266e Source of Uncertainty

Morton Subotnick

Music Producer

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Morton Subotnick can be seen playing the Buchla 266e Source of Uncertainty in this live performance at the 2011 CTM-Festival.

See how Taro Aiko uses Buchla 266e Source of Uncertainty

Taro Aiko

Composer

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...
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Source of Uncertainty is visble on the lower half of the picture

Genre Usage

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Used With

Based on how musicians on Equipboard use Buchla 266e Source of Uncertainty, it is most commonly used with the following gear.

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