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The Behringer 921A is a faithful reproduction of the original circuitry found in the renowned 'Modular 55 and 35' series. It's a module used in modular synthesis, a form of electronic music production, and is designed to fit into a standard Eurorack case.
The 921A Oscillator Driver features a frequency knob that can adjust between octave or semitone frequencies, a rocker switch to select between the two frequency types, and a control knob to adjust the width of the rectangular wave from 10% to 90%.
Yes, the 921A Oscillator Driver is designed to control not just one, but up to 12 921B Oscillators. This allows for layering of different sounds and beats for more complex and nuanced output.
Installing the 921A is simple as it is designed to fit into a standard Eurorack case. Just connect the power cables to the power supply and secure the module using the included screws.
Absolutely! With the 921A, you have complete control over your sound. You can adjust the frequency, select the type of frequency, and control the width of the wave. It also allows for incoming control voltage or modulation signals, giving you endless possibilities for creating unique sonic landscapes.
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1x Rotary knob
+/-6 octaves / +/-12 semitone, switchable
Rocker switch, +/-1 VDC or +/-6 VDC
< 10% to > 90%, 0 VDC to +6 VDC
2x 3.5mm jack, summed, 1 V/oct.
2x summed 3.5mm jack, 1 V/16%
Input Impedance: 100 k Ohm unbalanced
Maximum input level: -10 VDC to +10 VDC
Frequency control output: 1x 3.5mm jack, 1 V/oct
1x 3.5mm jack, 1 V/16%
Output Impedance: 10 Ohm unbalanced
Maximum output level: -10 VDC to +10 VDC
Drive capability: 12x 921B VCO modules
Eurorack
25 mA (+12 V), 25 mA (-12 V)
8 HP
1.6 x 5.1 x 1.4" (40 x 129 x 35mm)
3.2 oz (90.71g)
644216625000

How can you recreate the iconic sounds of the 70s and elevate your music production to new heights The answer lies in the Behringer 921A Legendary Analog Oscillator Driver Module for Eurorack, a faithful reproduction of the original circuitry found in the renowned "Modular 55 and 35" series. This module was the secret weapon of legendary artists like Keith Emerson, Stevie Wonder, and Tangerine Dream, who used it to create some of the most memorable records in history.
The 921A Oscillator Driver is a testament to the evolution of modular synthesis, a revolutionary development in electronic music that began in the early 70s. Back then, these modules were discrete transistor designs, as op-amps were prohibitively expensive. This unique design gave the modules a distinctive sound that is now within your reach.
This Eurorack-ready module is designed to fit seamlessly into a standard Eurorack case, allowing you to easily integrate it into your existing setup or start a new one. It's as simple as connecting the power cables to the power supply and securing the module with the included screws.
The 921A Oscillator Driver is not just about recreating vintage sounds. It's also about giving you the flexibility to shape your own unique sonic landscapes. With a frequency knob that adjusts between octave or semitone frequencies and a rocker switch for selecting between the two, you have complete control over your sound. The width of the rectangular wave can be adjusted from 10% to 90% using a dedicated control knob, and you can inject any incoming control voltage or modulation signal into either of the 3.5 mm Frequency or Width inputs.
But the 921A goes even further. It's designed to control not just one, but up to 12 921B Oscillators, giving you the ability to layer different sounds and beats for a more complex and nuanced output. This is the hallmark of any great synth jam, and with the 921A, you have the power to create your own.
Whether you're a modular synth novice or a seasoned pro looking to complete your collection, the Behringer 921A Legendary Analog Oscillator Driver Module for Eurorack is an essential tool for creating extraordinary music. Experience the distinct sound and limitless possibilities of modular synthesis with the 921A.
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