The is a free, standalone software application that replicates the functionality and user interface of the DiGiCo S21 mixing console. It allows sound engineers, system technicians, and students to design, edit, and prepare show files without needing physical access to the console. This report covers its purpose, key features, workflow, system requirements, and practical applications.

If you are mixing a musical theater production or a corporate event with structured cues, use the editor to build your snapshot list.

Have a specific tip for the S21 Offline Editor? Share it in the comments below!

| Feature | Description | |---------|-------------| | | Exact graphical replica of the S21’s 15.6” touchscreen interface. | | Channel Processing | EQ, dynamics (compressor/gate), HPF, phase, pan, delay, and 4-band parametric EQ with RTA. | | Routing Matrix | Flexible input‑to‑bus, bus‑to‑matrix, and output patchbay (local I/O, MADI, optional DMI cards). | | Snapshot Automation | Create, edit, and sequence snapshots with selective recall scopes (faders, mutes, processing, routing). | | FX Rack | 8 stereo FX processors (reverbs, delays, multiband comps, etc.) plus channel dynamics. | | Control Groups & Macros | Assign faders, mutes, and custom control events to user‑defined keys and fader banks. | | DMI Card Support | Configure optional I/O (Dante, Waves, AES, etc.) as if the card were physically installed. | | MIDI / OSC | Program remote control commands (for lights, playback, etc.). | | Session Merge | Import/merge elements (e.g., just EQ from another show) into the current session. | | File Export | Save as .s21show (console‑compatible) or export to DiGiCo’s older Show format for some legacy models. |

The S21 has a touch-sensitive screen with a dedicated Macro bank area.