Initial Audio has announced an update to its modular wavetable synthesizer, sampler and loop slicer. Version 1.2.6 of SourceLab comes with new features to supercharge your workflow.
After over a decade of refining tools for creators, we’ve crafted a plugin that stands above the rest: 6 sound sources, each capable of being a Wavetable Oscillator, Sampler, or Loop Slicer. Designed for producers, sound designers, and composers who demand excellence, SourceLab is your gateway to unparalleled creative control.
Changes in SourceLab v1.2.6
- Velocity range settings for all six sound sources: Simply adjust the velocity minimum and maximum values at the bottom left of each sound source to fine-tune how your wavetables, loops and samples respond to dynamics.
- Automatic pitch detection and mapping for multisample imports: SourceLab now analyzes your samples, detects root notes, and lays them out for you in the sample mapper—useful when dealing with file sets that do not have the root note in the filename. Import multisamples with a single click!
- Flexible drag-and-drop support: You can now drag in both folders containing samples or a selection of multiple samples directly into SourceLab for a much more intuitive workflow.
- New import modes for batch sample imports: Choose between percussive and multisample modes. In percussive mode, samples are placed next to each other, mapping one per key—ideal for quick drum kits. In multisample mode, SourceLab analyzes the pitch of your loaded samples and maps them across the keys. If file names contain key information, it prioritizes that for automatic mapping.
SourceLab for Windows and Mac (VST3, AU and AAX) is free for existing users. New customers can purchase the synth for $199 USD at the Initial Audio store and from Plugin Boutique.

