35 KVR members have added Spline Wavetable Synthesizer to 30 MyKVR groups 42 times.
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https://thewavewarden.com/spline
Spline is the next-generation synthesizer from TheWaveWarden. Built on the powerful Odin 2 engine, it's been completely modernized for today's production needs.
- Spectral Wave Morphing Oscillators
- Virtual Analog Filter Modules
- Full Internal FX Suite.
- ADSHR Envelope Modules
- MSEG Modules
- Sample & Hold Units.
- Drag-and-Drop Modulation System
- True Stereo Modulation Support
- Flexible Signal Routing.
- Fully Featured Wavetable Editor
- Built-in Arpeggiator
- Enablements Module
- Multiple XY-Pads with Automatic Spline Mode.
- In-Synth Access to Full Manual.
Available as a VST3 / AU plugin for.
Windows (x64), macOS (x64 / M1), and Linux (x64).
System Requirements:
Windows 7 or later / macOS 10.11 or later / modern Linux distribution
Graphics card with OpenGL 3.2 or higher.
Reviewed By Future1313 [all]
December 18th, 2025
Version reviewed: 1.1.1 on Windows
The WaveWarden - Spline - Short Review
As a thank you for this outstanding virtual synthesizer, I've created a free sound set. The Spline pleasantly surprised me; it's rare to see such a beautiful, useful, and easy-to-read graphical user interface (GUI). Then there are the new possibilities for creating new sounds.
The Spline Mode function, which allows you to easily draw all sorts of curves and shapes in the oscillator and filter, is truly a creative and useful invention for realizing new sonic possibilities. You can also load wavetables in the oscillator, the sound generator. The following morphing functions are available: Spectral Factor, Spectral Shift | Octaves | Spectral RNG, Spectral Perlin | Hard Clip, Soft Clip | Fold, Zero, Invert | FM 1:1, FM 1:2, FM 1:3 | Brick Wall LPF, Brick Wall HPF, Brick Wall BPF, PeakEQ | Sync, Phase Distortion.
The menu includes a zoom button to adjust the GUI size, a button to disable helpful tooltips, an INIT button to set a preset for your own sound design, a Show Manual button to access the comprehensive and beautifully designed manual, a Storage Path button for direct access to the hidden folder containing the presets, and an About button. Further sound processing options include four LFOs, four ADSR envelopes, an arpeggiator, enablements, and a modulation matrix.

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