The C15 is an instrument for the performing musician, designed for playability and detailed sound editing. The embedded digital synthesis engine is based on phase modulation, a comb filter, and a feedback structure giving the C15 a unique character and creating crisp, organic, and complex sounds.
As a dedicated real-time instrument, the C15 provides high-resolution dynamic response and extensive sound design possibilities. The C15 is self-contained with dedicated haptical controls, but it can also be extended with a graphical user interface on any WiFi-enabled device running a browser. Read more


Read more about the GUI on this page

??? Stimming C15 Product Video ???
Update Studio Package released

This new major update brings USB MIDI and internal digital audio recording to the C15. Read more

??? Stimming C15 Product Video ???
Stimming reviews the C15

Long-time C15 user Martin Stimming finally did a review of our instrument (and reveals a few secrets). Read more

>C15 Updates in Spring 2020
C15 Update 2020 released

We have released a significant update of the operating system, the synth engine, and the user interface of the C15. Read more


Nonlinear Labs is a small Berlin-based company. In 2012 we started developing digital instruments. The C15 is our first product. It is manufactured in Italy and Germany. In addition to keyboard instruments, we plan to develop percussion synthesizers and other products for performing musicians.
We invest in extensive research, with the aim of achieving high product quality. We also share the results of our work as open-source software and hardware. Read more about Nonlinear Labs and the company's philosophy here.