Focusrite AMS-SCARLETT-SOLO-4G
Focusrite Scarlett Solo 4th Gen USB Audio Interface User Manual
Model: AMS-SCARLETT-SOLO-4G
Introduction
The Focusrite Scarlett Solo 4th Gen USB Audio Interface is designed for guitarists, vocalists, and producers, offering high-fidelity, studio-quality recording. It features a detailed ultra-low-noise mic pre, studio-grade converters with a 120dB dynamic range, and comes with a complete songwriter's recording toolkit including Pro Tools Intro+, Ableton Live Lite, and Focusrite’s Hitmaker Expansion software bundle. Air mode enhances vocals and guitars, and the amped-up headphone output provides independent volume control. Enjoy personalized Easy Start, 24/7/365 Support, and a three-year warranty.
What's in the Box
- Scarlett Solo 4th Gen Audio Interface
- USB A-C Cable
Setup Guide
1. Physical Connections
Connect your Scarlett Solo 4th Gen to your computer using the provided USB A-C cable. The device is bus-powered, meaning it draws power directly from your computer via the USB connection.

Front view of the Scarlett Solo 4th Gen, showing input and output controls.

Back view of the Scarlett Solo 4th Gen, showing USB-C port, Kensington lock, and line outputs.
Connect your microphone to the XLR input (Input 1) and your instrument (e.g., guitar) to the 1/4-inch input (Input 2). Use the Line Outputs (Left and Right) to connect to your studio monitors or speakers. Plug your headphones into the dedicated headphone jack.

The Scarlett Solo 4th Gen connected to a laptop, microphone, and headphones, illustrating a typical recording setup.
2. Software Installation (Easy Start)
Focusrite provides an Easy Start tool to guide you through the software installation process. Once connected, visit the Focusrite website and follow the instructions to register your device and access your bundled software. This includes industry-leading recording software and a full collection of record-making plugins.

The Easy Start graphic, indicating a simplified setup process for Focusrite products.

A visual representation of the Hitmaker Expansion software bundle, including various plugins and DAWs.
Operating Your Scarlett Solo
Front Panel Controls
- Input 1 (XLR) & Input 2 (1/4-inch): Connect your microphone to Input 1 and your instrument to Input 2.
- Gain Knobs: Adjust the input level for each channel. The halo indicators around the knobs change color to show signal level: green for good signal, amber for approaching clipping, and red for clipping.
- 48V Phantom Power: Press this button to supply 48V phantom power to the XLR input for condenser microphones.
- Air Mode: Activates Focusrite's 'Air' effect, which emulates the sound of Focusrite's classic ISA mic pres, adding clarity and presence to vocals and acoustic instruments.
- Direct Monitor: Toggle this switch to hear your input signal directly through your headphones or monitors with zero latency.
- Monitor Output Knob: Controls the overall volume of the main line outputs (to your speakers).
- Headphone Output & Volume Knob: Connect your headphones here and adjust their independent volume level.
Software Integration
The Scarlett Solo 4th Gen is compatible with all major audio recording software (DAWs) across Mac OS, Windows OS, iOS, and ChromeOS. The included Hitmaker Expansion bundle provides a robust suite of tools to get you started with recording, mixing, and mastering your music.
Maintenance
To ensure the longevity and optimal performance of your Focusrite Scarlett Solo 4th Gen, follow these general maintenance guidelines:
- Cleaning: Use a soft, dry cloth to wipe down the exterior of the device. Avoid abrasive cleaners or solvents that could damage the finish.
- Storage: Store the interface in a cool, dry place away from direct sunlight, excessive heat, or humidity.
- Handling: Handle the device with care. Avoid dropping it or subjecting it to strong impacts, which could damage internal components.
- Connections: Always ensure cables are properly inserted and removed gently to prevent damage to the ports.
Troubleshooting
Common Issues
- No Sound: Check all cable connections, ensure the Scarlett Solo is selected as the input/output device in your computer's sound settings and DAW, and verify volume levels on the device and in your software.
- Distorted Audio: Reduce the input gain using the gain knobs. If the halo indicator is red, your signal is clipping. Ensure your microphone or instrument is not too loud.
- Connection Problems: Try using a different USB-C port on your computer or a different USB-C cable. Ensure your computer's operating system is up to date.
Driver and Software Compatibility
While the Scarlett Solo is designed for broad compatibility, some users have reported issues with specific operating systems or software configurations, particularly concerning driver performance and audio levels. If you experience unexpected behavior, ensure you have the latest drivers directly from the Focusrite website. In some cases, uninstalling and reinstalling Focusrite-related software and drivers has resolved issues. For persistent problems, consult Focusrite's official support resources.
Specifications
| Feature | Detail |
|---|---|
| Item Weight | 14.4 ounces |
| Product Dimensions | 1.79 x 5.63 x 3.78 inches |
| Item Model Number | AMS-SCARLETT-SOLO-4G |
| Color Name | Red |
| Compatible Devices | Microphone, Instrument, Personal Computer, Headphones, Studio Monitors |
| Connector Type | USB-C |
| Hardware Interface | USB 2.0 |
| Supported Software | All audio recording software |
| Hardware Platform | Audio Interface |
| Operating System | Mac OS, Windows OS, iOS, ChromeOS |
| Number of Channels | 2 |
Warranty and Support
The Focusrite Scarlett Solo 4th Gen comes with a comprehensive three-year warranty, ensuring peace of mind for your investment. Focusrite also provides dedicated 24/7/365 support to assist you with any queries or issues you may encounter.
For further assistance, detailed user guides, and troubleshooting resources, please refer to the official Focusrite support website or download the User Guide (PDF).
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