0x808

A standalone drum machine, step sequencer, and synthesizer — also available as a VST3/CLAP plugin and a GTK 4.0 native Linux frontend. 72 bundled drum samples, 50 synth presets, pattern-based arrangement, and offline WAV/MP3 export. All dependencies vendored, zero external runtime dependencies.

Features

• Drum grid — 16-track step sequencer with velocity, pitch per step, mute/solo
• Piano roll — melodic note editing with variable-length notes
• 3 synthesis modes — subtractive, FM (4-op), and wavetable with 50 presets
• SoundFont support — load .sf2 files via TinySoundFont
• Sample browser — load WAV/MP3/FLAC samples, 72 bundled CC0 drum samples
• Song arrangement — pattern chaining with song/perform modes
• Effects — per-track and master bus filter, delay, reverb, overdrive, fuzz, chorus
• Export — offline render to WAV (16/24/32-bit) and MP3 (128-320k)
• Project save/load — JSON-based .sqproj format
• Undo/redo — Ctrl+Z / Ctrl+Shift+Z with 32 levels
• Swing/shuffle — per-transport swing control (0-100%)
• Velocity humanization — per-track random velocity variation
• Pattern presets — 12 drum patterns + 10 bass lines (House, Trap, DnB, Lo-fi, etc.)
• Multiple frontends — ImGui (standalone + plugin) and GTK 4.0 (Linux native)