Xfer Records Shrub: Free Mini Serum Wavetable Synth Plugin
Xfer Records has released Shrub, a free 8-voice wavetable synthesizer plugin created by Steve Duda for macOS, Windows, and Linux. Originally conceived alongside custom firmware for the M-VAVE FM-1 portable synth, this compact instrument packages the core architecture of Serum into a streamlined package. You can grab the download directly through Xfer Records at no charge.
Compact Serum Wavetable Architecture
Shrub acts as a lightweight sibling to Serum, offering two wavetable oscillators loaded with diverse factory tables alongside an additive mode that lets you draw custom waveforms harmonic by harmonic. Sound designers also get access to Xfer's familiar warp algorithms, unison voice stacking, a dedicated multi-wave sub oscillator, a flexible noise generator, and a versatile multimode filter.
Standalone Plugin and Hardware Librarian
While Shrub operates as an editor and librarian for M-VAVE FM-1 hardware running the beta firmware, it functions fully as an independent VST3 instrument in any modern DAW. Steve Duda notes that because the desktop plugin executes the exact hardware bytecode for 1:1 sonic consistency, CPU consumption may read slightly higher on desktop monitors than typical mini-synths.
Key features include:
- 8-voice polyphony with unison detune modes
- Dual wavetable oscillators plus additive harmonic drawing
- Integrated sub-oscillator and multi-mode noise source
- Multi-mode filter section with flexible routing
- Bytecode-accurate compatibility with M-VAVE FM-1 hardware
- 64-bit VST3 support for macOS, Windows, and Linux
Xfer Records Shrub is completely free to download with zero licensing fees and 100% royalty-free commercial sound rights. The instrument provides a direct, accessible gateway into Serum-style sound design across all major desktop operating systems.
Head over to Xfer Records to download Shrub and integrate this wavetable synth into your digital audio workstation.
FAQ
Is Xfer Records Shrub really free?
Shrub is permanently free to download from Xfer Records with no activation fee or expiration date.
What plugin formats does Shrub support?
The instrument is provided as a 64-bit VST3 plugin compatible with macOS, Windows, and Linux DAWs.
Do I need the M-VAVE FM-1 hardware to use Shrub?
No hardware is required, as the plugin operates as a self-contained software synthesizer inside your DAW.