Felted Synth — the felt piano, physically modelled.
A felt piano plugin that is a true physical model — no samples — fused with a six-character analog-style filter, bowed strings and an evolving drone engine. From whisper-soft upright to cinematic soundscape, in one instrument.
From whisper-soft upright to cinematic soundscape
A felt piano that goes further
Felted Synth starts with a physically-modelled felt piano, then fuses it with an analog-style filter, bowed strings and drones — one instrument for the intimate and the immense.
Physically-modelled felt piano
A true physical model, not a sample library — the felt piano is generated live, so it responds to your playing like an instrument, not a recording.
Six-character analog filter
An analog-style filter with six distinct characters shapes the tone — keep the piano soft and intimate, or push it into bold, colored territory.
Bowed strings
Bowed string tones add sustained, singing lines and slow swells — a legato counterpart to the felt piano's soft attack.
Evolving drone engine
A drone engine generates slow-moving, evolving beds — the cinematic-soundscape half of the instrument, for pads and underscore that shift over time.
AU, VST3 & Standalone
Loads in any AU/VST3 host on macOS — Ableton Live, Logic Pro, FL Studio, Studio One, Cubase, Bitwig, Reaper — or runs standalone, no DAW required.
Full free trial
Try the complete instrument free — every feature, no watermark. Keep it for a one-time $69 with lifetime updates included.
Three instruments' worth of use cases
The felt piano handles the intimate moments, the drones handle the atmosphere, and the bowed strings sing in between.
Intimate felt piano
The muted, close-up felt tone at the heart of lo-fi beats, ambient music and modern scoring. Play it whisper-soft and let the room do the rest — it pairs beautifully with Aurora, our free shimmer reverb.
Evolving drones & underscore
Slow-moving drone beds for pads, tension and underscore. Layer a drone quietly beneath the felt piano and a simple progression becomes a soundscape.
Bowed textures
Sustained, string-like lines and slow swells for melodies that need to breathe — a bowed voice that complements the piano's soft attack in cinematic and ambient work.
Made for the Mac
AU, VST3 and Standalone for macOS 11 and later — native on Apple Silicon and Intel.
- Price
- $69 USD one-time · full free trial with no watermark · lifetime updates.
- Formats
- AU (Audio Unit), VST3 and a Standalone app — all included.
- macOS
- macOS 11 Big Sur and later · Apple Silicon & Intel.
- Windows
- Not currently supported — Felted Synth is macOS-only at the moment.
- Hosts
- Ableton Live, Logic Pro, FL Studio, Studio One, Cubase, Bitwig, Reaper and any AU/VST3 host on macOS — or play it standalone.
- Delivery
- Instant download via Gumroad.
- Maker
- Built by Reinhardt Buhr / Buhr Audio — clean, musical, CPU-friendly plugins.
Start the Felted Synth free trial
Download the full-feature free trial — no watermark — and play the felt piano, bowed strings and drones in your own session. One-time $69 to keep it, with lifetime updates.
Go deeper into felt & physical modelling
Free guides on the felt piano sound and physically-modelled instruments.
The best felt piano VST in 2026
What a felt piano actually is, sampled vs physically-modelled, and what to look for in a felt piano plugin.
Read → ExplainerWhat is a physical modelling handpan?
How physical modelling turns math into a playable instrument — the same approach behind Felted Synth.
Read → TutorialHow to make ambient music with a handpan
Layering, texture and space — ambient techniques that work just as well under a felt piano.
Read →