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Create chiptune music instantly in your browser. Click the grid to add notes, press play to hear your creation, and export when you're done.
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UltraBox, sometimes searched as Ultra Box, is the most powerful BeepBox mod and online chiptune music editor available today. Create professional chiptune music with advanced features including 6-operator FM synthesis, 32 channels, and custom sampling capabilities. This comprehensive music creation tool combines the best elements from over 30 BeepBox mods into one unified platform.
As the leading online music editor for chiptune and 8-bit music, UltraBox provides everything you need for professional music creation. Whether you're new to chiptune composition or an experienced music producer, our browser-based editor offers professional-grade tools for creating retro game soundtracks, 8-bit music, and authentic chiptune compositions.
UltraBox integrates the best features from popular BeepBox mods. Access all tools in one powerful music editor without switching platforms.
Professional 6-operator FM synthesis for complex, authentic chiptune sounds. Create rich textures with advanced sound design capabilities.
Customize your music creation experience with themes, custom samples, and flexible UI options. Make this chiptune editor truly yours.
UltraBox stands out as the most comprehensive online music editor for chiptune and 8-bit music. While other BeepBox mods like JummBox, GoldBox, and ModBox focus on specific features, UltraBox provides a complete music creation solution. Compare our chiptune editor to see why musicians worldwide choose UltraBox for their music production needs.
| Feature | UltraBox β¨ | JummBox | ModBox | BeepBox |
|---|---|---|---|---|
| FM Operators | 6 | 4 | 4 | 0 |
| Custom Samples | β | β | β | β |
| Max Channels | 32 | 16 | 12 | 8 |
| Custom Themes | β | Limited | β | β |
| Sample Extractor | β | β | β | β |
| Offline Version | β | β | β | β |
Unlike JummBox which focuses on stability, or ModBox which emphasizes experimental features, UltraBox provides a balanced approach for professional music creation. You get access to advanced synthesis options like 6-operator FM, custom sampling capabilities, and extensive modulation tools, all while maintaining an intuitive interface. The active development community ensures regular updates, bug fixes, and new features for this powerful chiptune editor. With UltraBox, you're not just getting a music tool - you're joining a thriving ecosystem of chiptune creators and music producers.
Select from hundreds of presets including classic chip waves, FM synths, and custom samples. Each preset in this music editor gives you instant professional sounds for chiptune creation.
Click on the grid to add notes in the online music editor. The editor plays them automatically so you can hear your chiptune creation in real-time as you compose.
Create different patterns using the numbered boxes in the music editor. Arrange patterns to build complete chiptune songs with verses, choruses, and bridges.
Use multiple channels to layer melodies, bass, and drums in your composition. UltraBox supports up to 32 channels for complex chiptune arrangements and professional music production.
Export your chiptune creation to WAV/MP3 or share the URL with other musicians. Share your 8-bit music with the UltraBox community on Bluesky using #beepbox.
Master advanced UltraBox features that make it the best BeepBox editor. Learn professional techniques for chiptune music creation with UltraBox BeepBox.
UltraBox's 6-operator FM synthesis opens up a world of sound design possibilities. Unlike traditional subtractive synthesis, FM synthesis creates complex timbres by modulating one oscillator with another. Experiment with different algorithms to create everything from bell-like tones to aggressive bass sounds. The feedback controls add harmonic richness, while the precise frequency ratios let you dial in exact harmonic relationships.
Learn FM Synthesis βTransform UltraBox into a full-featured sampler by importing your own audio. Use the built-in sample extractor to convert soundfonts (SF2 files) into individual samples. Upload samples to a CORS-friendly host like File Garden, then import them via URL. Control loop points, playback direction, and apply filters for maximum flexibility.
Explore Sample Library βModulator channels let you automate any parameter in real-time. Create tempo changes for dramatic effect, use pitch modulation for vibrato or glissando, or automate filters for evolving textures. You can even record modulation in real-time by holding Ctrl/Shift while moving sliders during playback.
Learn Modulation Techniques βPersonalize your workflow with custom themes. Import themes from other BeepBox mods, or create your own using the theme editor. Customize colors, backgrounds, cursors, and even fonts to match your aesthetic preferences.
Most visitors come here to open the editor, compare UltraBox with BeepBox, download an offline build, or learn how custom samples work. Use these official guides to jump directly to the page that matches your search.
Compare UltraBox and BeepBox side by side, including channel limits, FM synthesis, custom samples, themes, and when each editor makes sense.
Read the comparison βNeed UltraBox offline? Use the official download guide to choose the right Windows, macOS, Linux, or portable HTML release from GitHub.
Open download guide βExplore the built-in sample library, learn how to add custom samples, and convert SoundFont files before importing them into UltraBox.
Explore samples βConnect with chiptune enthusiasts and music creators worldwide. Share your compositions, discover inspiration, and learn from fellow musicians in our active online music community.
Follow #beepbox to see the latest community creations and share your own music
View Feed βJoin the BeepBox Modding server for support, collaboration, and discussions
Join Discord βContribute to development, report issues, or download the official offline version
Download Guide βBrowse thousands of songs in the Twitter archive and discover inspiration
Browse Archive β