Verbos Electronics Verbos Complex Oscillator
Buchla-inspired dual oscillator with harmonic waveshaping
32 HP Eurorack module
The Verbos Complex Oscillator is a dual-oscillator Eurorack module inspired by the Buchla 259 Complex Waveform Generator, featuring a primary carrier oscillator with a wavefolder and harmonic manipulation section, and a secondary modulation oscillator. It produces an extremely wide spectrum of thick, harmonically rich timbres through FM, waveshaping, and additive-style harmonic mixing, making every setting feel like a sweet spot.
Features
- Dual oscillator design with carrier and modulation oscillator sections
- Modulation oscillator is unipolar — requires external bipolar VCO for conventional bipolar FM
- Exponential FM via the internal FM modulation bus
- Linear FM available via direct patch to carrier
- Wavefolder with six individual harmonic controls (Harmonic 1-6)
- Harmonic Mix knob blends the harmonically folded signal
- Harmonic Shift knob shifts the harmonic content
- Individual CV inputs for each of the six harmonic controls
- Sync input syncs the Modulation oscillator to the carrier oscillator
- Multiple simultaneous waveform outputs: Sine, Sawtooth, Square, Triangle, Complex, All
- V/Oct tracking on carrier oscillator
- Inspired by the Buchla 259 Complex Waveform Generator
Controls & Jacks (36)
- Mod CV Atten — Fine-tunes the oscillator frequency
- Waveshape — Blends between different waveform shapes
- Mod Depth — Controls the amount of amplitude modulation
- Mod FM Atten — Controls the amplitude of the first harmonic
- Car Frequency — Sets the base frequency of the oscillator
- Mod Frequency — Controls the amplitude of the second harmonic
- Car CV Atten — Controls the amplitude of the third harmonic
- Timbre — Controls the amplitude of the fourth harmonic
- Even — Controls the amplitude of the fifth harmonic
- Master Out — CV control for harmonic content
- Car FM Atten — Controls the amplitude of the sixth harmonic
- Low — Controls the amount of frequency modulation applied
- Mod Index — Controls the modulation depth of waveshape
- Odd — Blends between harmonic selections
- Mod V/Oct — Pitch control via 1V/Oct standard
- Harmonics Out — CV input for harmonic 1 amplitude
- High — Shifts the harmonic content
- AM / FM — Selects oscillator mode or operation
- Harmonics Main Out — CV input for harmonic 2 amplitude
- Car CV In — Hard sync input from master oscillator
- Mod CV In — CV control for output amplitude
- Car Sub Out — CV input for harmonic 3 amplitude
- Car V/Oct — CV input for harmonic 4 amplitude
- Harmonics CV In — CV input for harmonic 5 amplitude
- Mod FM In — CV input for harmonic 6 amplitude
- Mod Waveshape — Controls the overall output amplitude of the oscillator
- Mod Sub Out — Frequency modulation control
- Car FM In — Complex harmonic waveform output
- Car Saw Out — Sawtooth waveform output
- Car Square Out — Square waveform output
- Mod Saw Out — Pure sine wave output
- Mod Square Out — CV control for waveshape
- Mod Waveform — Selects the frequency range of the oscillator
- Car Waveform — Controls the master output level
- Mod Section Out — Triangle waveform output
- Activity — Visual indicator of oscillator activity
How-To Guides
- Classic Buchla-Style FM Tone
- Harmonic Wavefolder Sweep
- True Bipolar FM with External Oscillator
- Hard Sync Harmonic Locking
- CV-Animated Harmonic Spectrum
- Pulsing Waveshape Bass
- Multi-Output Waveform Layering
- LFO Mode Modulation Source
- Internal Modulation Oscillator FM Drone
- Linear FM Timbre Control
Explore the interactive Verbos Complex Oscillator panel on BleepDex — tap any control to learn what it does.
