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VoLum

VoLum is an open-source guitar amp collection for the stage, studio, and practice desk. It uses the Neural Amp Modeler core, but ships as its own focused app: 15 curated amps, built-in PRE pedals (including a Transpose/Octaver pitch pedal), Dual Amp, POST delay/reverb/tremolo, your own amp/IR/pedal imports, per-amp presets, a tuner, a metronome, and a fast dark UI for standalone use or VST3 hosts.

Download VoLum or jump to the user guide.

Why It Stands Out

• A curated amp collection, not a blank slate: 15 pro amps — vintage, modern, and boutique — each with multiple gain channels and four speaker modes, all full-size NAM Architecture 2 (A2) profiles. Pick one and play.
• A complete rig in one window: pitch, compressor, and two NAM drive-pedal slots up front, amp and cab in the middle, delay/reverb/tremolo after — the whole PRE | AMP | POST chain at a glance.
• A pitch pedal built for guitar: low-latency Transpose (mono or polyphonic) for drop tunings and capo shifts, plus a polyphonic Octaver that holds its tuning even on detuned low strings.
• Dual Amp: run two amps at once, pan each lane, and flip support polarity for wide, layered tones from a single track.
• POST effects with real character: Digital, Analog, and Reverse delay and Optical, Bias, and Harmonic tremolo — both tempo-syncable — plus a reverb suite that goes past Hall and Plate into Oktaverb, layering Halo, Shimmer, and Bloom pitch-wash voices for lush octave-shimmer ambience.
• Bring your own: import your amp captures, impulse responses, and pedal captures into a managed library that keeps working after you move the original files.
• Remembers your tones: every amp keeps its own knobs, channel, cab, PRE/POST, and Dual Amp setup, and per-amp presets recall a whole rig in one click.
• Made for stage and studio: a silent tuner and metronome, full keyboard control, and a fast dark UI — free and open source, as standalone or VST3.

Download

Use Releases for stable packages. Use Actions -> CI only for preview builds from the latest development state.

Platform	Recommended asset	When to choose it
Windows	VoLum-vX.Y.Z-windows-setup.exe	Easiest install: standalone app, VST3, and bundled rigs.
Windows	VoLum-vX.Y.Z-windows-portable.zip	Portable or scripted setup. Keep VoLum.vst3 and VoLumRigs together.
macOS	VoLum-vX.Y.Z-macos-installer.dmg	Easiest install when available. Contains VoLum Installer.pkg.
macOS	VoLum-vX.Y.Z-macos-standalone.dmg	Standalone app only.
macOS	VoLum-vX.Y.Z-macos-vst3.zip	Manual VST3 install. VoLum is VST3, so it does not appear in Logic Pro.

Releases may not include every asset type. Open the release page and pick the package that matches your system.

Important Security Notice

VoLum release signing is still being set up. See the code signing policy.

• Windows: SmartScreen may warn that the app is from an unknown publisher. If you trust the build source, choose More info -> Run anyway.
• macOS: Gatekeeper may block unsigned or non-notarized builds. Use right-click -> Open on the app or installer, or System Settings -> Privacy & Security -> Open Anyway.
• macOS VST3 zip: if your DAW still hides the plugin after a rescan, remove quarantine:

xattr -cr ~/Library/Audio/Plug-Ins/VST3/VoLum.vst3

Preview builds from CI are development artifacts and should be treated as unsigned test builds.

Quick Install

Windows Installer

Run VoLum-vX.Y.Z-windows-setup.exe. It installs:

• VoLum.exe to C:\Program Files\VoLum
• VoLum.vst3 to C:\Program Files\Common Files\VST3
• VoLumRigs to the VoLum install folder

The VST3 finds the bundled rigs automatically.

Windows Portable

Unzip VoLum-vX.Y.Z-windows-portable.zip. For standalone, run VoLum_x64.exe. For VST3, copy both folders into your VST3 scan path:

C:\Program Files\Common Files\VST3\
  VoLum.vst3\
  VoLumRigs\

macOS Installer

Open VoLum-vX.Y.Z-macos-installer.dmg, then run VoLum Installer.pkg. The installer can place the standalone app, VST3, and bundled rigs for you.

macOS Standalone

Open VoLum-vX.Y.Z-macos-standalone.dmg, drag VoLum.app to Applications, then launch it. The app includes the bundled rigs.

macOS VST3 Zip

Unzip VoLum-vX.Y.Z-macos-vst3.zip, then place both VoLum.vst3 and VoLumRigs in your VST3 folder:

~/Library/Audio/Plug-Ins/VST3/
  VoLum.vst3/
  VoLumRigs/

Rescan plugins in your DAW. Use a VST3-capable host such as REAPER, Ableton Live, Cubase, Studio One, or Bitwig.

Linux

VoLum does not currently provide a native Linux build. Some users have reported that the Windows VST3 works well on Linux through yabridge, but that path is not officially tested by VoLum.

Bundled Amps

Amp	Channels
Ampete One	4
Bad Cat Mini Cat	3
Brunetti XL 2	3
Diezel Herbert Mk1	4
Fryette Deliverance 120	2
H&K TriAmp Mk2	6
Lichtlaerm Prometheus	3
Marshall 2204 1982	6
Marshall JMP 2203 1976	6
Marshall JVM 210H OD1	6
Orange OD120 1975	5
Orange ORS100 1972	2
Sebago Texas Flood	2
Soldano SLO100	3
THC Sunset	5

Each amp ships with AMP, G12, G65, and V30 speaker modes.

Learn More

• User guide: interface, Dual Amp, PRE pedals, POST effects, custom content, presets, tuner, metronome, keyboard controls, and settings.
• Developer guide: build, test, packaging, and architecture notes.
• Report a bug or request a feature: use the Bug report template for crashes or wrong behavior, and Feature request for ideas.
• Settings are stored locally at %LOCALAPPDATA%\VoLum\volum-settings.json on Windows and ~/Library/Application Support/VoLum/volum-settings.json on macOS.

Credits

• Neural Amp Modeler by Steven Atkinson
• NeuralAmpModelerPlugin, the original plugin shell VoLum grew from
• iPlug2, the plugin framework
• Amp profiles by Lum