C15 Specs from their site:

Phase 22 Synthesis Engine

2 Oscillators (sine wave, phase modulation, frequency randomization)
2 Shapers (sine curve, adjustable foldback and asymmetry)
Ring Modulator
Comb Filter (tunable, with allpass and lowpass)
State Variable Filter (multi-mode, 2-4 poles, FM)
Feedback Mixer (4 input signals, shaper for the sum)
Feedback bus with 4 destinations
Output Mixer (stereo, 4 input signals, shaper for the sum)
5 Stereo Effects: Cabinet (amp simulation), 8-pole Gap/Band Filter, Phaser/Flanger/Chorus, Echo, Reverb
3 ADBDSR Envelopes, adjustable attack curve
Velocity sensitivities for envelope levels, attack times, and release times
4 Macro Controls, assignable to up to 86 target parameters
8 Hardware Sources, mappable to the 4 Macro Controls
Number of parameters: 317
Resolution of the parameters: typically 1000 steps (250 ... 15000 steps)
Resolution of key velocity, ribbons, bender, aftertouch, pedals: 4000 steps
20-voice polyphony, variable Unison settings
Scale parameters for micro-tuning the 12 steps of the octave

Parameter Editing

4 Selection panels, each with 24 buttons and LEDs
Labeling by exchangeable magnetic overlays
Edit panel with an OLED display (256 x 64 dots), an incremental encoder, and 18 buttons
The ribbons are also assignable for parameter editing.
User-definable Init preset and Default values
Randomize function
Graphical user interface on any WiFi-enabled device running a browser, unique zoom-and-pan navigation, enabled for touch
Preset System
User-definable banks
Unlimited number of presets per bank
User-editable infos per preset
Search function to find presets by name or tags in the infos
Morphing transition between presets.
Undo System
Unlimited undo for all user interactions, including sound editing steps
Undo list with support for different editing branches (tree view)

Hardware Features

61-key (5 octave) Fatar keybed with semi-weighted long-arm keys
Note-on and note-off velocity sensitivity
Monophonic aftertouch
Two 800 mm touch strips (ribbons), each with 33 LED dots
Ribbon modes: absolute, relative, combinable with return-to-center
Lever (magnetic force loaded) for pitchbending and similar applications
Control panel with an OLED display (128 x 32 dots) and four buttons
Output volume potentiometer (at the front)
Headphone level potentiometer (at the front)
Base unit can be used without panel unit
Magnetic front panel foils can be replaced for future synthesis engines (italics mine)


Main audio outputs (L, R) (TRS, balanced by transformers)
Headphone output at the front (TRS)
4 inputs for analog controls, such as pedals (TRS, flexible pin-assignment)
USB host connector for data exchange and software updates


Base unit only: 900 x 290 x 100 mm (width x depth x height)
Including panel unit: 900 x 410 x 160 mm (width x depth x height)

Base unit: 10.5 kg
Panel unit: 3 kg

"The C15 is a keyboard instrument made for performing musicians. Its character stems from a puristic digital engine which produces a unique palette of sounds seamlessly spanning from organic and acoustic to experimental and electronic.

With its top-quality keybed, dual full-length ribbons, special pitch bender, and four pedal connections the C15 is designed for real-time performance, making it more like a traditional musical instrument than a typical synthesizer. It is resolutely an instrument to be played by musicians, not machines. Therefore it has no MIDI and does not contain LFOs or internal sequencers.

Like many classical instrument builders, we have chosen wood for most of the housing. The rest is made of steel or aluminium. The concept features a two-part design. The compact base unit is for playing and includes all performance elements as well as the sound engine and audio components. It can be easily detached from the panel unit and played autonomously.

The panel unit is for detailed parameter control and sound design. Its haptic layout is based on the principle of muscle memory. In addition, a graphical user interface can be displayed and edited on any device that has a browser and Wi-Fi. This interface is optimized for touch screens and can be intuitively zoomed and panned with common gestures."

So no MIDI. No LFOs??

Not thinking they'll sell too many. Too bad, it sounds neat to me, but without those...:(

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