Mantis Vex Q

A parametric EQ VST3 plugin built with JUCE 8. 24 bands, dynamic EQ, linear phase mode, oversampling, and M/S monitoring.

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Features

EQ

• 24 independent bands
• Filter types: Bell, Low Shelf, High Shelf, Low Cut, High Cut, Notch, Band Pass, All Pass, Tilt Shelf
• Slopes: 12 / 24 / 36 / 48 dB/oct (Butterworth cascade)
• Per-band channel routing: Stereo, Left, Right, Mid, Side

Dynamic EQ

• Per-band dynamic mode with threshold, attack, release, and ratio controls
• External sidechain input support

Processing

• Linear phase mode (4096-point FIR convolution, ~46ms PDC at 44.1kHz)
• Oversampling: 1x / 2x / 4x / 8x
• Auto-gain with A-weighting (IEC 61672) — gain compensation weighted by ear sensitivity
• Output gain with smoothing

Monitoring

• Real-time spectrum analyzer (pre/post EQ)
• Monitor solo and delta mode
• M/S monitoring (stereo / mid / side)

Workflow

• Click EQ display to add bands, drag nodes for freq/gain, scroll for Q
• A/B comparison slots
• Undo/redo (Ctrl+Z / Ctrl+Y)
• Band copy/paste (Ctrl+C / Ctrl+V)
• Keyboard shortcuts: E (enable), B (bypass), D (dynamic), S (solo)
• MIDI CC learn — right-click any knob to assign

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Installation

1. Download Mantis-Vex-Q-v1.0.0-win64.zip from Releases
2. Extract Mantis Vex Q.vst3
3. Copy it to your VST3 folder — typically C:\Program Files\Common Files\VST3\
4. Rescan plugins in your DAW

Requirements: Windows 10/11 x64, VST3 host

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Building from source

Dependencies

• JUCE 8 at D:/Juce/JUCE (or update the path in CMakeLists.txt)
• Visual Studio 2022
• CMake 3.22+

git clone https://github.com/mantisvex/mantisvex-Q.git
cd mantisvex-Q
mkdir build && cd build
cmake .. -G "Visual Studio 17 2022" -A x64
cmake --build . --config Release

The built plugin will be at build/MantisVexQ_artefacts/Release/VST3/Mantis Vex Q.vst3.

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License

GNU General Public License v3 — see LICENSE.