# Introduction

***

This manual is designed to help you get the most out of the S4 by providing clear and structured information on every aspect of its functionality. Whether you’re just getting started or diving deep into advanced features, this guide offers both high-level overviews and detailed explanations.

The manual is organized into chapters based on major components of the S4 workflow, including navigation, project management, modulation, devices, performance tools, and system settings. Each section walks through concepts, parameters, and interactions in a practical and accessible format.

Use this guide as a reference to learn, explore, and troubleshoot as you work with the S4. Search through the user guide, navigate through the menu or use the Quick Links below.

***

### Quick Links

[**Important Safety & Regulatory Information**](https://docs.torsoelectronics.com/important-safety-and-regulatory-information)

<table data-view="cards"><thead><tr><th></th><th></th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td><strong>What's New in 2.0</strong></td><td>Learn what's new in the S4 2.0 update</td><td><a href="what-is-the-s4/whats-new-in-2.0">whats-new-in-2.0</a></td></tr><tr><td><strong>S4 Overview</strong></td><td>Learn the basics of navigation, controls, and UI layout</td><td><a href="what-is-the-s4/s4-overview">s4-overview</a></td></tr><tr><td><strong>Projects</strong></td><td>Create, load, save, and organize projects</td><td><a href="projects-and-tracks/project-overview">project-overview</a></td></tr><tr><td><strong>Tracks</strong></td><td>Work with the four tracks on the S4</td><td><a href="track-overview">track-overview</a></td></tr><tr><td><strong>Device Reference</strong></td><td>Explore device-specific functionality</td><td><a href="devices/device-reference">device-reference</a></td></tr><tr><td><strong>Modulation</strong></td><td>Apply, edit, and fine-tune modulation sources and mappings</td><td><a href="modulation/modulation-overview">modulation-overview</a></td></tr><tr><td><strong>Perform</strong></td><td>Use macros for global control and expressive performance</td><td><a href="perform-and-scene/perform-overview">perform-overview</a></td></tr><tr><td><strong>Scene</strong></td><td>Set up and trigger scenes for live variation and control</td><td><a href="perform-and-scene/scene-overview">scene-overview</a></td></tr><tr><td><strong>Mix</strong></td><td>Control mix levels, sends and mute states</td><td><a href="miscellaneous/mix-view">mix-view</a></td></tr></tbody></table>

***