WET Reverb VST3 Plugin

A professional reverb VST3 plugin with authentic 80s digital character, inspired by the Yamaha R1000, Electro-Harmonix Holy Grail, and Roland DEP-5.

Quick Start

Download

Download the latest release from the Releases page.

The download includes all platforms in one universal bundle:

• Windows (x64)
• Linux (x86_64)
• macOS (Intel & Apple Silicon)

Installation

Windows

1. Download and extract the ZIP file
2. Copy WetReverb.vst3 to C:\Program Files\Common Files\VST3\
3. Restart your DAW and scan for plugins

Linux

1. Download and extract the ZIP file
2. Copy WetReverb.vst3 to ~/.vst3/ (create the folder if needed)

   mkdir -p ~/.vst3
   cp -r WetReverb.vst3 ~/.vst3/
   

3. Restart your DAW and scan for plugins

macOS

1. Download and extract the ZIP file
2. Copy WetReverb.vst3 to ~/Library/Audio/Plug-Ins/VST3/ (create the folder if needed)
3. Remove the quarantine attribute and restart your DAW:

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

Why does macOS block this plugin?

When you try to load the plugin, macOS may show: "WetReverb.vst3" cannot be opened because the developer cannot be verified.

This does not mean the plugin is unsafe. Apple requires developers to enroll in the Apple Developer Program ($99/year) and notarize each build. As an independent developer releasing free, open-source software under the MIT license, I don't have the budget for Apple's developer program. The complete source code is available on GitHub for anyone to inspect and build themselves.

This is a common issue with free audio plugins on macOS.

Usage

1. Load the plugin in your DAW (Reaper, Cubase, Ableton Live, FL Studio, etc.)
2. Select reverb mode using the 5 buttons: Room, Plate, Hall, Cathedral, Cosmos
3. Monitor levels using the input/output LED meters

Reverb Modes

| Mode | Comb Filters | Pre-delay | Early Refl. | Character | |------|--------------|-----------|--------------|-----------| | Room | 4 | 17ms | 3-24ms (6 taps) | Intimate, prominent reflections | | Plate | 8 | 0ms | 2-17ms (5 taps) | Dense shimmer | | Hall | 10 | 25ms | 8-53ms (7 taps) | Spacious, smooth | | Cathedral | 10 | 37ms | 12-79ms (8 taps) | Long, diffuse | | Cosmos | 12 | 65ms | 15-92ms (6 taps) | Ethereal, infinite wash |

Features

100% Wet Reverb

Pure reverb signal output - no dry signal in the mix. Perfect for:

• Parallel processing with dry signal in your DAW
• Creative sound design
• Authentic vintage rack reverb simulation

80s Rack-Style Character

• 24 kHz Internal Sample Rate - Authentic vintage digital reverb with band-limited frequency response
• 12-bit Quantization - Classic gritty digital character
• TPDF Dither - Smooth quantization
• Stereo Crosstalk - Authentic L/R channel bleed simulating analog circuitry
• Early Reflections - Program-dependent multitapped delay lines for realistic room ambience
• HF Damping - Mode-dependent high-frequency rolloff

Schroeder-Style Algorithm

Parallel comb filters with damping followed by series allpass diffusion.

VST3 Automation

Full parameter automation support in all major DAWs.

System Requirements

| Platform | Requirements | |----------|-------------| | Windows | Windows 10/11 (64-bit) | | Linux | x86_64 Linux | | macOS | macOS 11.0+ (Apple Silicon) or macOS 10.13+ (Intel) |

Supported DAWs: Any DAW that supports VST3 plugins (Reaper, Cubase, Ableton Live, FL Studio, Studio One, Bitwig, etc.)

Changelog

v1.0.1 (2026-03-28)

• Fixed a bug where the selected reverb mode was not remembered across DAW sessions

v1.0.0 (2026-03-15)

• Initial release
• 5 reverb modes (Room, Plate, Hall, Cathedral, Cosmos)
• 80s digital character (24kHz, 12-bit)
• 9-segment LED meters
• Multi-platform support (Windows, Linux, macOS)

Building from Source

For developers who want to build the plugin themselves.

Prerequisites

Windows

• Visual Studio 2022 Build Tools or Community Edition
• CMake 3.15+
• Git

Linux (Ubuntu/Debian)

sudo apt-get install cmake gcc g++ libstdc++6 libx11-xcb-dev libxcb-util-dev \
    libxcb-cursor-dev libxcb-xkb-dev libxkbcommon-dev libxkbcommon-x11-dev \
    libfontconfig1-dev libcairo2-dev libgtkmm-3.0-dev libsqlite3-dev \
    libxcb-keysyms1-dev git

macOS

• Xcode Command Line Tools: xcode-select --install
• CMake 3.15+ (brew install cmake)

Build Steps

1. Clone with VST3 SDK:

   git clone https://github.com/yonie/WetReverb.git
   cd WetReverb
   git clone --recursive https://github.com/steinbergmedia/vst3sdk.git
   

2. Build:

   • Windows: build.bat
   • Linux/macOS: chmod +x build.sh && ./build.sh

3. Install:

   • Windows: install.bat
   • Linux/macOS: chmod +x install.sh && ./install.sh

Validation

The build process automatically runs the official VST3 validator (47 tests).

Technical Details

| Property | Value | |----------|-------| | Framework | VST3 SDK (Steinberg) | | Language | C++17 | | GUI | VSTGUI4 | | Supported Sample Rates | 22.05 kHz - 384 kHz | | Internal Sample Rate | 24 kHz | | Internal Bit Depth | 12-bit with TPDF dither | | CPU Usage | <1% typical | | Memory | ~300 KB |

Audio Processing Chain

1. Anti-alias filter (10kHz LPF at host rate)
2. Downsample to 24kHz (linear interpolation)
3. Pre-delay (mode-dependent: 0-65ms)
4. Early reflections (multitapped delay line, program-dependent)
5. Parallel comb filters with internal damping (4-12 combs)
6. Series allpass filters for diffusion (4 allpasses)
7. Mix early reflections + late reverb
8. Output low-pass filter (6kHz)
9. High-pass filter (80Hz)
10. 12-bit quantization with TPDF dither and gain-stepping
11. Upsample to host rate
12. Reconstruction filter (10kHz LPF)

Project Structure

WetReverb/
├── vst3sdk/                    # VST3 SDK (symlink or clone)
├── WetReverb/                  # Plugin source
│   ├── source/                 # C++ source files
│   ├── resource/               # GUI definition and assets
│   └── CMakeLists.txt          # Build configuration
├── .github/workflows/          # GitHub Actions CI/CD
├── scripts/                    # Build scripts
├── build.bat / build.sh        # Build scripts
├── install.bat / install.sh    # Installation scripts
└── README.md

Troubleshooting

Plugin Not Appearing in DAW

• Restart your DAW after installation
• Check the correct VST3 folder location
• Run a plugin rescan in your DAW settings

macOS "Apple Could Not Verify" Warning

• Right-click the plugin → Open → Open (one-time)
• Or run: xattr -cr ~/Library/Audio/Plug-Ins/VST3/WetReverb.vst3

No Sound Output

• Verify the plugin is receiving audio input (check meters)
• Make sure track routing goes through the plugin

License

MIT License - Copyright © 2026 Ronald Klarenbeek

The VST3 SDK is licensed separately under a BSD-style license (see VST3 SDK license files).

Author

Ronald Klarenbeek

• Website: https://wetvst.com
• Email: contact@wetvst.com
• GitHub: https://github.com/yonie

---

Built with precision engineering for authentic vintage reverb character