Ferry Island Modular Four Seas Eurorack Wavetable Oscillator Module

Arguably the most powerful wavetable oscillator ever seen in Eurorack, this lets you navigate in four (!) dimensions with truly awesome sound design potential.

Four Seas is a four-dimensional wavetable oscillator that transforms sound exploration into a tactile, intuitive experience. Navigate through sonic space using X, Y, and Z controls to explore wavetables as a three-dimensional cube, while the fourth dimension emerges through four related outputs with intelligent spread control.

From gentle detuning to complex microtonal relationships, the spread control offers multiple modes including harmonic ratios, prime numbers, and golden ratio proportions; everything from lush chords to experimental frequency relationships is at your fingertips. The four outputs cascade across wavetable space through intelligent spread algorithms, creating rich, evolving textures like light dispersing through a sonic prism.

The powerful modulation section features thru-zero phase modulation, phase distortion waveshaping, and bitwise XOR for complex sound design. Dual sync inputs with selectable modes, CV control over wavetable banks, and SD card loading for custom wavetables complete the package. Each oscillator pair can switch to LFO rates for modulation duties, and I2C compatibility enables integration with Teletype, Crow, ER-301, and other modules. No menus, no presets — just immediate, musical control over a vast sonic landscape.