Instruo Seashell Hybrid Desktop Semi-Modular Synth
Instruo’s debut semi-modular desktop synth is here, the Seashell! Ideal for those curious about Eurorack / Instruo without committing to a full modular setup, it offers their signature style in a compact, performance-ready package. The format is sleek as… lean interface interface, clever and powerful software integration, and a size that fits any studio or live rig.
- Integrate seamlessly into your DAW
- Incorporate into your live performance
- Connect your MIDI controller
- Expand with your eurorack system
- …or play as a stand-alone instrument.
Make waves with Seashell - a new analogue workflow
Seashell is a compact semi-modular synthesiser system, pairing hands-on hardware with expansive control and configuration through dedicated software.
Seashell offers seamless integration of Instruō hardware into existing workflows for professional sound design, music production, and live performance.
Seashell / sē’shěl”/
compound noun: Sea (environment) vast body of waves; Shell (architecture) ornate outer structure, (computing) user interface for entering control commands.
Hardware Features:
- Two sawtooth core analogue VCOs
- Analogue voltage controlled wavefolder
- Resonant voltage controlled Low-Pass Filter
- Internal waveform routing to Filter and Wavefolder inputs
- Parallel modular level outputs
- Internal analogue cross FM modulation bus
- CV inputs for self patching and external modulation
- Stereo Line/Headphone output driver
- On-board DSP effects
- TRS MIDI input
- User-definable external CV input and output
- USB (type C) connectivity for audio/MIDI integration to DAW
Software Controllable Features:
- VST3/Software control interface expansion
- High resolution (14Bit) digital control over analogue circuitry
- Customisable scale transposition engine
- Total recall of digital controlled analogue parameters
- Internal LFO modulation sources
- Multi-function envelope generator
- Stereo diffusion effect
- 4x4 modulation matrix mixer with hardware macro control
- MIDI learn functionality
What’s in the box?
- Multi-region power supply
- USB (type C) Cable
- 3.5mm TRS MIDI to 5pin DIN MIDI cable
- 2 * 3.5mm TS patch cables
- 3.5mm TRS audio to 2 * ¼” TS audio sockets
Seashell has a myriad of functions that support flexible synthesis and sound design techniques.
Many of these functions are digitally read so that they can be controlled by either the hardware, the software, or both. Certain functions are analogue only and do not have a software control.
| Digital Controls | Analogue Controls |
| Coarse Knobs | Fine Knobs |
| Macro Knob | FM Attenuverters |
| Freq Knob | Linear/Exponential Toggles |
| Wavefold Amount Slider | Freq CV Attenuator |
| Attack Knob | Fold CV Attenuator |
| Release Knob | Resonance Knob |
| Gate/Trigger Button | Analogue Symmetry Modulation Attenuator |
| Source/Shift Button | |
| 1V/Oct Button | |
| LF Button | |
| Sync Button | |
| Level Knob |
The software can be set to one of two layouts: Standard Mode or
Extended Mode.
The Standard Mode displays all parameters available on the hardware, along with additional software-only settings. The Extended Mode includes everything in the Standard Mode, plus additional modulation features such as the digital LFO and the
modulation matrix.
Learn more in the Seashell manual
Seashell Controller App:
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