ER-301 Sound Computer running inside VCV Rack

ER-301 for VCV Rack

ER-301 Sound Computer emulator for VCV Rack 2

ER-301 Sound Computer for VCV Rack brings the ER-301 emulator by Brian Clarkson / Orthogonal Devices directly into VCV Rack 2 as a self-contained module.

The port embeds the ER-301 application, display, unit library, package system, and audio engine inside Rack, preserving the original interface and hardware-style workflow while adding conveniences made possible by a desktop environment.

Each module behaves as its own ER-301 environment, allowing multiple isolated instances to live inside the same Rack patch. Patches can retain each instance's state, while the virtual front card keeps ER-301 packages, samples, and user data accessible through the familiar package workflow.

ER-301 Sound Computer was created by Brian Clarkson / Orthogonal Devices. This VCV Rack port is derived from the original ER-301 repository, and is maintained by Jeff Triggs / Festivamente. It is developed and distributed with permission from Orthogonal Devices.

Version 2.1.0

The original ER-301 interface, package manager, unit library, and workflow remain intact. The VCV Rack port adds:

  • Native file browsing
  • Desktop text entry
  • Multiple isolated ER-301 instances in a single Rack patch
  • Per-instance state save and restore in Rack patches and module presets
  • Direct access to the virtual front card from the context menu or SD-card slot
  • Silver and Black panel finishes with selectable display colors
  • Third-party Packages built for the emulator, including ffx and mPorts. *Currently available on Apple Silicon; support for other architectures is coming soon.*
  • Native operation at 48 kHz and 96 kHz, with host-rate conversion at other Rack sample rates
  • Direct VCV Rack CV output from the ER-301's four outputs
  • Processing headroom determined by the host computer rather than the original hardware CPU