Seaboard GRAND Stage

Multi-dimensional synthesizer and controller

SRP £2,799.95 inc VAT

Inspiration at your fingertips

The Seaboard GRAND is a radically new musical instrument that reimagines the piano keyboard as a soft, continuous surface and puts expression back at your fingertips

Expression in every gesture

For centuries, keyboardists have been forced to accept the velocity of their key strikes marking the end of that note's expressive potential. With the Seaboard GRAND, however, this interaction is merely the beginning. Intuitive gestures such as presses, bends and slides open new avenues to musical expression.

Continuous touch

Continuous touch enables you to sound a note and then take it on a musical journey; modulating volume and timbre through one continuous motion. The Seaboard GRAND’s keywaves offer precise tactile feedback, making it easy to sense the slightest change in pressure, resulting in a far more organic experience than traditional aftertouch.

Intuitive pitch control

Adjusting pitch is as natural on the Seaboard GRAND as it is on a stringed instrument. Slide a finger to the left to lower the pitch of a note; slide it to the right to raise it. The smooth feel of the playing surface lets you easily glide from one keywave to the next, or apply a natural vibrato to any note.

Glissando ribbons

Unique, low-friction ribbons run along both the top and the bottom of the Seaboard GRAND’s playing surface. They make it easy to start playing one keywave, then slide to any other keywave you choose in one fluid gesture, even allowing multiple notes to glissando independently at the same time.

Equator sound engine

Equator is a full-featured audio engine, designed specifically for the Seaboard’s multidimensional control. Every Seaboard GRAND ships ready to run Equator on-board: just plug in a pair of headphones or an amplifier and you'll be ready to go. Find out more.

Harmony between hardware and software

The SoundDial is the only control you will need to adjust the sound of the Seaboard GRAND. Shift between sound presets using the continuous rotary control, while the subtle LED ring shows you exactly which preset is currently being played.

Handcrafted in London

The Seaboard was invented and developed in London, and we are proud to be making each unit right here in London too. We assemble and test each Seaboard GRAND in our Dalston studio, enabling us to care passionately for each detail and ensure the quality of every instrument we make.

   Key Features

  • Features a unique soft, tactile silicon keywave playing surface, for ultimate sensitivity and expression
  • Same muscle memory layout and playability of a piano keyboard but with more expressivity
  • Have the ability to control pitch, volume and timbre using just your fingertips
  • Continuous aftertouch and polyphonic per note pitch bend
  • Intuitive ribbon controls for impressive glissando and pitch slide effect
  • Manipulate sounds organically like an acoustic stringed instrument
  • 61 keywave model for studio and live use
  • Industry standard IO including stereo outputs, headphone output, 2 USB ports and 3 programmable expression pedal inputs
  • Equator sound engine and software offering real time multi-dimensional synthesis
  • Designed and built by hand in London, England



Dimensions: 36.9" x 13.3" x 1.0" (937mm x 338mm x 25.7mm)

Weight: 15.4lb (7kg)

Keywaves: 61

Back panel:

3 continuous pedal inputs (1/4" jacks)

2 balanced audio out jacks (1/4")

Stereo headphone out mini-jack (1/8")

USB type A and USB type B

Volume control

9-12V DC power in


Operating systems: OS X 10.7+

Minimum Mac Specs: Macbook Pro i5 2.5GHz or faster min 4 GB RAM, recommended 8GB RAM

Controller protocols: MIDI, MDC


Equator sound design and control mapping

Continuous touch curve control

Pitch rounding

Real-time visual feedback

Firmware updater

Free upgrades to future software releases


FM and subtractive synthesis

Multi-layer sample playback

User definable envelopes

Comprehensive modulation matrix

Independent dynamic voice control

Effects including delay, chorus and reverb


The Seaboard GRAND ships with a custom version of FXpansion's Synth Squad package, optimised for plug-and-play compatibility with the Seaboard. Synth Squad comprises thee analogue-modelling synths - Cypher, Amber and Strobe - that can be combined and layered through the powerful Fusor environment. All four come as standalone apps as well as in VST, AU, RTAS and AAX formats. Synth Squad would normally cost $249, but is entirely free for Seaboard GRAND customers.


USB drive containing install for Equator software, Seaboard GRAND Dashboard software and FXpansion SynthSquad

Quick Start Guide

Bespoke carry case