Inspired by the heyday of modular synthesizers in the 1970s, the 921 voltage controlled oscillator module delivers that quintessential analog warmth and character in a compact Eurorack format. With the 921 voltage controlled oscillator, you can tap into retro synth vibes perfect for vintage electronic music or modern productions needing a touch of analog magic.

Sculpt Your Sound With Six Fully Editable Waveforms

At the heart of the 921 oscillator are six continuously variable waveforms to choose from, including sine, triangle, sawtooth, inverse sawtooth, square wave and inverse square wave. Tweak parameters like frequency range and fine tuning to dial in the exact timbre you want. Further tailor your waveshape with pulse width modulation, opening up fat, animated sounds.

Modulate and Morph With Multiple Control Voltage Inputs

To create more dynamic, evolving textures, the 921 oscillator features dual control voltage inputs. Patch LFOs, envelopes, sequencers and more to modulate oscillator parameters in real time. The three summed frequency control inputs give you even more options for modulation sources. Take your sound design farther by blending oscillator outputs with external signals.

Build Your Unique System With Eurorack Compatibility

As part of the Eurorack standard, the 921 voltage controlled oscillator seamlessly integrates into any Eurorack modular synthesizer rig. Just connect the included power cable to your system's power supply and mount the module with the provided screws. With its authentic vintage sound and advanced modulation capabilities, the 921 oscillator is the perfect starting point to construct your ideal modular synthesizer system.