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Physical Modeling Engine

  • 6-voice polyphony
  • Excite the resonators with external audio, the built-in contact mic, or MIDI notes
  • Flexible, high-fidelity physical models: Strings, Tubes, Bars
  • Reharmonize the resonators with 12 preset chords
  • Selectable root note and chord voicing

Reverb

  • Custom-designed stereo reverb adds spatial character
  • Routable pre- or post-resonators — let the space excite the object, or let the object excite the space
  • Sustains infinitely

Custom Chords + Microtonal Tunings

  • Define a user chord of up to 6 MIDI notes
  • MTS SysEx files supported for microtonal and xenharmonic scales
  • Save user chords and scales into presets

Contact Microphone

  • Strum, tap, scratch the mic — excite the resonators with tactile vibrations
  • Toggle the mic on or off with the tap of a button
  • Mic is fully disconnected from the audio path when disengaged
  • Adjustable mic sensitivity

Polyphonic MIDI instrument

  • Retune the resonator voices directly via keyboard control
  • Internal exciter turns Ghosts into a playable physical modeling instrument
  • Multiple MIDI exciters: pluck, strike, air — or excite the resonators with your input audio
  • Create unique exciters with a captured loop

Touch Modes

On-the-fly performance effects to excite and transform the physical models — and a powerful collection of creative tools that stand on their own. All Touch Modes can be placed pre- or post- resonators, and can be synced to MIDI clock:

  • Endless Loop
    • A looper with speed and direction controls, capable of infinite overdubs. A perfect companion for the contact mic
    • Record up to 40 seconds at 0.5x, 20 seconds at 1x, or 10 seconds at 2x
  • Rhythm Generator
    • Virtual‑analog models of a legendary 1981 drum machine with punchy analog resonator circuits. Resonators exciting resonators!
    • Kick, snare, hi-hat. Real‑time synthesis (no samples)
    • 11 curated patterns plus a 12th Euclidean Random notch that algorithmically generates a fresh pattern each time it’s re-selected
  • Terrazzo
    • A streaming granular processor that disassembles sound into colorful fragments and binds them into new forms. Turn anything into a lush texture or bouncy rhythm to excite the resonators
    • 6 read heads spread across the stereo field — some play forward, or reversed, some at normal speed, some an octave up
    • Adjustable grain size and envelope shape (plucky to smooth)
  • Shepard Shifter
    • A virtual-analog Bode frequency shifter adds motion and bends perception
    • Up-shift or down-shift the audio spectrum — create endlessly rising or falling spectral peaks that excite different frequencies of the resonators

Presets, MIDI Control, CV

  • 6 factory presets
  • Save up to 32 presets using MIDI
  • USB and TRS MIDI supported
  • All parameters are fully controllable via MIDI, CV, or expression
  • Smart detection of TRS Type A or Type B connections
  • CV control up to 500Hz

Specs

  • Input/Output: TRS stereo
  • DSP: 480Mhz ARM processor
  • Processing: 32-bit floating point
  • Ultra-low-noise 32-bit TAC5242 audio codec (119dB dynamic range)
  • Max Input Level: +12dBu
  • Latency: 1 msec
  • Power: +9VDC, 2.1 mm, negative tip PSU
  • Power Supply Protection: Up to +14V and reverse polarity down to -20V
  • Current Draw: 220mA
  • Frequency Response: 24Hz – 20kHz
  • Input Impedance: 1MegΩ
  • Output Impedance: 1kΩ
  • Bypass Options: High headroom (+18dBu) buffered bypass, high headroom buffered bypass with trails
  • Dimensions: 12.1 cm x 6.6 cm x 6.2 cm
  • Manufacturing:
    • Circuit boards assembled in Minneapolis, MN
    • Enclosures drilled, painted, and printed in the USA
    • Final assembly and testing performed in Minneapolis, MN

User Manual