Firmware Update 2025
This major firmware update for the C15 was released at NAMM 2025. The polyphony has been increased from 24 to 48 voices at the previous sampling rate of 48 kHz. Alternatively, a higher sampling rate of 96 kHz with 24 voices is available. The C15's audio engine has been expanded to support polyphonic modulation sources. In the first step, polyphonic aftertouch can now be received via MIDI. Pitch bend and sustain functions can now also be used independently of macro controls, freeing them up for other modulations. A sostenuto pedal function and the ability to switch presets and banks via footswitch have also been added.
Spring 2023 Update
The Spring 2023 firmware update brought many improvements of the C15's synth engine and user interface. Get an impression of the new features in this video presented by Tim Sund.
Firmware Update 2021 - Studio Package
In 2021 the "Studio Package" update introduced MIDI connectivity for the C15 and an internal digital audio recorder. To demonstrate the new capabilities, Tim Sund creates a track using the C15 only.
2020 Firmware Update
The 2020 firmware update brought significant improvements of the C15's operating system, synth engine and user interface. Get an impression of the new features in this video presented by Tim Sund.
Dual Modes (2020 firmware update)
Tim presents some features of the 2020 firmware version. He focuses primarily on the new Layer and Split modes.
The C15 played by …
Berlin-based keyboardist and composer Tim Sund accompanied the development of the C15 early on. See him playing the C15 on stage and in the studio.
Federico Solazzo is an Italian composer based in the Netherlands. He is a very experienced and versatile musician and sound designer who has been playing and making presets for the C15 since the beginning.
Ulrich Wappler, a student of electrical engineering, was our intern for half a year. In addition to his work on the C15 hardware he spent quite some time doing sound design and playing the C15.
Peter M. Mahr is a musician and synthesizer enthusiast from Austria living in Switzerland. He is playing, among a lot of other synthesizers, also a C15 and did some excellent demo recordings with it.
Pete Farn has always been a fascinating electronic musician, constantly experimenting with sound and sculpting it into strange and wonderful sonic worlds. And for some time now he is an avid C15 user.
It was one of the first times Tim Sund used the C15 in the studio when he was doing overdubs for recordings of his band project Green Desert Tree.
Find some older audio recordings here. They do not represent the latest level of sound design on the C15 but can show some interesting facettes of the instrument.
