K-ACCUMULATOR is a complex oscillator that reimagines phase modulation and waveshaping synthesis through a unique architecture that continuously evolves between harmonic precision and controlled chaos. Rather than following the traditional complex oscillator formula, it combines a carrier/modulator core with a morphing 3D waveshaping matrix, advanced phase modulation techniques, and a highly flexible function generator to create an instrument capable of everything from stable melodic voices to unpredictable, self-modulating textures. Designed as both a complete synthesizer voice and an open-ended sound design tool, K-ACCUMULATOR can generate quantised melodies using either Just Intonation or Equal Temperament, produce evolving drones and rhythmic sequences, or venture into richly animated timbres through multiple layers of internal feedback, harmonic interaction, and modulation. Every section operates seamlessly across sub-audio and audio-rate frequencies, allowing modulation sources to become oscillators and oscillators to become modulation sources without changing workflow. At the heart of the module is a continuously morphing eight-node waveshaping matrix that dynamically reassigns synthesis functions as it moves between positions. Harmonic wavefolding, asymmetric phase modulation, harmonic stretching, damped cross-phase modulation, formant synthesis, pulsar synthesis, and sync damping can all be blended together in real time, producing sounds that move fluidly between harmonic, percussive, vocal, and chaotic territories. Despite its depth, K-ACCUMULATOR remains entirely immediate to operate, with no menus, hidden functions, or shift modes. Twenty-three patch points provide extensive integration with larger Eurorack systems, while external pitch tracking, waveform resynthesis, and compatibility with Rung Divisions further expand its capabilities. Features Complex carrier/modulator oscillator architecture Morphing eight-node 3D waveshaping matrix Harmonic wavefolding Harmonic frequency shifting Harmonic stretching Asymmetric phase modulation Damped cross phase modulation Formant synthesis Pulsar synthesis Sync damping Damped self-feedback Universal Function Generator External pitch tracking External waveform resynthesis Just Intonation and Equal Temperament quantisation Harmonic and subharmonic locking 23 audio and CV patch points Stereo sine and cosine outputs Rung Divisions expansion compatibility Galvanically isolated dual Daisy architecture No menus or hidden functions Specifications | Specification | Details | |---|---| | Type | Complex Oscillator | | Oscillator Architecture | Carrier / Modulator | | Waveshaping Matrix | 8-Node Morphing Matrix | | Quantisation | Just Intonation / Equal Temperament | | Function Generator | Integrated Universal Function Generator | | External Audio Input | Yes | | External Pitch Tracking | Yes | | Waveform Resynthesis | Yes | | Patch Points | 23 Audio & CV | | Stereo Outputs | Sine / Cosine | | Expansion | Rung Divisions Compatible | | Architecture | Galvanically Isolated Dual Daisy | Synthesis Techniques Harmonic wavefolding Harmonic frequency shifting Harmonic stretching Asymmetric phase modulation Damped cross phase modulation Formant synthesis Pulsar synthesis Sync damping Damped self-feedback External pitch tracking External waveform replacement resynthesis A rear expansion header provides direct integration with Rung Divisions, allowing K-ACCUMULATOR to drive the companion module using Clock and Data signals generated by its Universal Function Generator and Modulation Oscillator. Together, the two modules form a tightly integrated generative synthesis system with expanded rhythmic, harmonic, and sequencing capabilities. Video: https://youtu.be/foPRCBhxB9k&t=2sProduct Specs Item Number: 42930 Make: Fancy Synthesis Model: K-Accumulator Condition: Brand New Finish: White Categories: keyboards-and-synths ⇒ eurorack Function: Digital Oscillator Synth Voice Made In: United Kingdom MPN: FCY008 Modular Grid: Eurorack ⓘ ＋ Dimensions*: 32 HP 26 mm deep Power*: 330 mA +12V 28 mA -12V 0 mA 5V * User contributed details
