Rosetones creates a polyphonic synth voice that follows your playing. It listens to your notes and routes them through sympathetic resonators, creating blooming harmonic textures and evolving chords. At the heart of Rosetones is a 12-voice chromatic resonator bank that continuously analyses the input signal and routes detected pitches into tuned delay lines. Each pitch class excites a resonator that can sustain, swell, and interact with feedback to generate dynamic harmonic movement. The twelve central LEDs display the signal level of each resonator in real time, showing how incoming notes are exciting the 12-voice bank. The result is part synthesiser, part acoustic resonance engine. The Octave control shifts the active 12-note window across the keyboard range, redefining where the resonators are voiced while pitch detection remains unchanged. Play a basic triad and adjust the Octave control to re-voice the same notes into new inversions. A low bass line can drive higher-voiced resonators, transforming weight into shimmer and contrast. Modulation adds motion and depth to the resonator bank. Chorus introduces subtle multi-voice detuning for ensemble-style width, while Vibrato applies drifting pitch movement to each synth voice. The Sens and Feedback controls shape how strongly notes excite the resonators and how long they sustain, ranging from short percussive resonance to evolving harmonic bloom. Any equal-tempered instrument, such as guitar, bass, or synthesiser, can drive the resonator bank with natural tracking response. MIDI note messages allow precise pitch articulation layered over input audio, enabling harmonies that follow the timing and phrasing of your performance. Percussive sources can reveal melodic structure, while sustained lines expand into harmonic space. Rosetones can also function as a standalone sound source. With no input signal, higher Sens and Feedback settings allow the internal noise floor to excite and sustain the resonators, producing a unique drone voice shaped by Octave, Tone, and Modulation. Additional features include selectable gain and bypass modes, full MIDI control of every faceplate function, and onboard preset storage. Powered by a standard 9-volt centre-negative supply, Rosetones integrates seamlessly into pedalboards and studio setups. FEATURES 12-voice polyphonic sympathetic resonator engine Pitch tracking range: C2-B5 Adjustable octave window for harmonic re-voicing Selectable Chorus and Vibrato modulation modes with per-voice detune Adjustable input sensitivity and feedback sustain Fixed interval offset (unison through major 7th) Selectable gain modes (low instrument, instrument, line level) Selectable bypass modes (analogue buffered or DSP trails) MIDI input for full parameter control and preset storage (9 slots) Standard 9-volt, centre-negative power supply compatibility Housed in a single block of walnut, CNC-routed, hand-sanded, and polished SPECIFICATIONS 165 mm x 140 mm x 45 mm 1/4” TS jacks, instrument or line-level compatible Input impedance: 1 MΩ Output impedance:
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