This is a GNU/Linux under GNU Affero General Public License v3.0. https://github.com/percussa/ssp-sdk/blob/master/LICENSE
I find it funny, though not cheap.
Do you know any other modules or ~instruments that use GNU/Linux?
- Hartmann Neuron
- Korg Kronos
- Korg Oasys
- Lionstracs
- MOD Devices Duo (X)
- Yamaha Motif XS
- ...