Initial Audio SourceLab

At first glance, SourceLab may look like a powerful preset machine – a massive library built for producers to quickly browse high-quality content for their tracks. But look deeper, and you’ll discover a full-blown audio sandbox. From Skrillex-style wavetable synths to hyper-real multisample-based instruments like pianos, guitars, strings, and more – SourceLab gives you everything. Sliceable, pitchable loops. Drum kits, drum loops, and performance-ready patterns. All powered by Zynaptiq’s industry-leading ZTX time-stretch algorithm, one of the most advanced algorithms on the planet today.

Under the hood, SourceLab is built for performance: up to 6 sound sources per patch, each capable of loading wavetables, samples, or loops – or a blend of all three. At the core lies a powerful multi-layer MIDI sequencer. Create and arrange melodies, rhythmic patterns, or loop sequences, and stack them across layers to explore a whole new dimension of editable, generative musical ideas. Combined with advanced routing, modular FX racks, and a deeply optimized engine, SourceLab is not just a sound source – it’s a creative playground. A next-gen audio sandbox for producers to discover, build, innovate and share.

Crafted for Excellence

At Initial Audio, our mission has always been to empower creators with tools that spark real innovation. SourceLab is the culmination of over a decade of expertise — a plugin designed to break free from the limitations of traditional workflows and deliver a seamless, professional-grade experience.

With six fully independent sound sources, each capable of acting as a Wavetable Oscillator, Sampler, or Loop Slicer, SourceLab offers a level of flexibility and sonic depth rarely seen in a single instrument. You can even fine-tune the wavetable position of each individual unison voice, or trigger oscillators and samples on key release, adding a new layer of realism and creative control to your sound.

But SourceLab goes far beyond engine design. Its intelligent consolidation system allows creators to export entire libraries — including presets, MIDI files, samples, loops, and more — into a single, portable file. Whether you’re building sound packs or collaborating with producers around the world, your work remains fully intact and cross-compatible across all major DAWs on both Windows and macOS.

No more “file not found,” “sample missing,” or “wavetable unavailable” errors — everything is self-contained.

While most plugins are limited to being a synth, sampler, or slicer, SourceLab unites all three — and more — in one powerful, optimized audio sandbox. Wavetables. Samples. Loops. Drums. MIDI. FX. Sequencing. It’s all here — streamlined, integrated, and ready to inspire.

This isn’t just a plugin. It’s a complete creative environment — built for professionals, designed to evolve with you, and engineered to redefine what’s possible.

Hybrid Engine

6 sound sources – combine wavetable synths, samples and loops in a new intuitive way that redefines creativity. Each source supports 24-voice unison, ztx time-stretch, warp modes, frequency modulation and more.

Modulation Suite

14+ modulators – AHDSRs with legato and sequencer triggering, LFOs with custom shapes and sync options, MSEGs with loop modes and node-based editing. Enables sound design that stands out.

Granular Engine

Apply granular synthesis to samples and loops – tweak size, density, pitch (±24 semitones), and randomization options like start position, gain, and direction. For added musicality, the granular engine includes an Arp Mode.

MIDI Sequencing

6-layer sequencer with a master lane and individual routing to each sound source. Trigger drums, synths, and basses independently or in sync – with drag-and-drop MIDI import/export.

Effect Racks

6 racks with compressor, reverb, delay, multiband, and more – route them serially or in parallel with drag-and-drop ordering. Create a master rack for final polish, delivering a pro-grade mix within the plugin.

Preset Browser

Advanced tagging system for genres and characteristics – filter by tags, add custom author notes and images, and share effortlessly via drag-and-drop as a single, consolidated file, BPM-synced for maximum portability.

Our Goal Empowering Creators

At Initial Audio, our mission is to empower professional music creators – producers, sound designers, and composers who shape the sound of tomorrow. SourceLab reflects this commitment, offering a platform that eliminates the frustrations of traditional workflows and puts control back in your hands.

Unrivaled Freedom: Every preset in SourceLab is fully consolidated – samples, wavetables, loops, MIDI, all in one file, synced to your project BPM with ZTX quality for the Sampler and Loop Slicer. Share it with colleagues or clients across any DAW (FL Studio, Ableton, Logic, Pro Tools, Cubase – you name it), on Windows or Mac – it works seamlessly. Export and import via drag-and-drop – a professional workflow couldn’t be simpler.

Creator-Centric Design: While some solutions impose restrictive ecosystems or ongoing costs, we believe the best content comes from you – the creators. SourceLab empowers you to build and share without barriers – craft multisampled pianos with 4th dimension layers, virtual analog synths from real tables, or granular-chopped loops, and share them as single files. Your success drives ours.

A Platform That Evolves With You

With SourceLab, you’re not just getting a plugin – you’re joining a platform designed to grow with you. Create presets featuring synths, samples, loops, chords, arps, MIDIs, keyzones, layers, effects, and more – what else do you need? Our commitment is to support SourceLab long-term, ensuring it evolves over time to meet the needs of professional creators like you.

Built for the Future: We’re dedicated to enhancing SourceLab with new content and features, driven by your feedback and the evolving landscape of music production. We’ll keep a close ear to the web and our community, listening to your ideas and insights to bring this platform forward. Whether it’s expanding the library, refining the engine, or adding innovative tools, SourceLab will continue to grow as a cornerstone of your creative process.

Your Support Matters: Your involvement means the world to us. As a professional creator, your trust in SourceLab fuels our drive to deliver a tool that not only meets your expectations but exceeds them. Together, we’ll shape a platform that stands the test of time – a legacy built by and for the music production community.

Over 13,000 presets across 61 Libraries

SourceLab is fully compatible with the entire Heat Up 3 library – Initial Audio’s legendary virtual instrument that’s been a trusted staple in studios worldwide for over a decade.

With years of expansion and artist-grade content, Heat Up 3 has grown into one of the largest multisample-based libraries in existence – now offering over 13,000 high-quality instruments across 61 libraries.

And now, with SourceLab, you can take these sounds even further. Load Heat Up 3 content directly into SourceLab and unlock powerful new possibilities with advanced modulation, granular tools, multi-layer sequencing, and custom routing.

Features