Modartt
Pianoteq 9
Physically modeled virtual piano instrument, vivid, expressive, and highly customizable.
VST3supportedAUsupportedAAXsupportedCLAPnot supportedWINsupportedMACsupportedLNXsupported+ iOS
Checked September 2026
Pianoteq 9 is best for realistic, lightweight physically modeled piano sound instead of sample libraries; Spitfire Audio Originals Felt Piano is best for soft, intimate felt piano. Pianoteq 9 starts at an unpublished price and Spitfire Audio Originals Felt Piano at $29 one-time.

Modartt
Physically modeled virtual piano instrument, vivid, expressive, and highly customizable.
Felt-muted upright performed by Gwilym Simcock.
| Pianoteq 9 | Spitfire Audio Originals Felt Piano | |
|---|---|---|
| Best for | realistic, lightweight physically modeled piano sound instead of sample libraries | soft, intimate felt piano |
| Starting price | Not public | $29 one-time |
| Free version | Yes | No |
| Free trial | Yes | — |
| Formats | Standalone, VST3, AU, AAX | VST3, AU, AAX |
| OS | Windows, macOS, Linux, iOS | Windows, macOS |
| Key features | Real-time physical modelling synthesis (no samples), Modelled sympathetic resonances, Up to 8 simultaneous microphone placements, Per-note editing (PRO edition), Under 50MB install size | 3 mic signals, 10 presets, ADSR and sustain pedal controls, Expression and dynamics faders, 3GB, No subscription |
| Developer | Modartt | Spitfire Audio |