Our verdict: VCV Rack Free is the easiest way to learn and play modular synthesis without buying hardware. It runs as a standalone app; using it as a plugin inside a DAW requires the paid Rack Pro.
About VCV Rack
VCV Rack recreates a Eurorack modular system on screen. You add oscillators, filters, envelopes, sequencers and effects as modules and connect them with virtual patch cables, including polyphonic cables that carry up to 16 voices.
Rack 2 Free comes with more than 30 built-in modules, and the VCV Library lists over 2000 more, many of them free. It works with audio interfaces and MIDI controllers. The VST, AU and CLAP plugin version for DAWs is only in Rack Pro, and the VCV Host module for loading VST plugins inside Rack is sold separately.
What it does well
- Virtual patch cables. Wire modules together exactly like a hardware modular, with polyphonic cables.
- Module library. 30+ built-in modules and access to more than 2000 in the VCV Library.
- MIDI and audio I/O. Multi-interface audio or CV input/output and polyphonic MIDI for hardware control.
- Module selections. Save, share and reuse groups of modules and their settings.
- Module SDK. Develop your own modules in C++ with the VCV SDK.
Who it is for
Good fit
Synth enthusiasts and sound designers who want to learn or experiment with modular synthesis.
Look elsewhere
Producers who need it as a VST plugin in their DAW, which requires paid Rack Pro, and PCs with only integrated graphics.
Pros and cons
Pros
- Free and open source
- Huge module ecosystem
- Great for learning synthesis
- Works with MIDI controllers and audio interfaces
Cons
- DAW plugin version requires paid Rack Pro
- High CPU and GPU load with large patches
- Steep learning curve for newcomers to modular synths
How to install VCV Rack
Download the Windows x64 installer from vcvrack.com. VCV recommends a dedicated NVIDIA or AMD graphics card; on integrated Intel graphics CPU usage can rise noticeably. Set your audio device in the Audio module before patching.
Questions about VCV Rack
Is VCV Rack free?
Yes. Rack 2 Free is open source under the GNU GPL v3. Rack Pro, which adds the DAW plugin, is paid.
Can I use VCV Rack Free in my DAW?
Not as a plugin. Rack Free runs as a standalone app; the VST, AU and CLAP plugin is part of Rack Pro.
What hardware does VCV Rack need?
A 64-bit CPU with SSE4.2, 1 GB of RAM and, as VCV recommends, a dedicated graphics card from 2013 or later.
