Focusrite Scarlett 4i4 4th Gen – Professional USB Audio Interface
The Focusrite Scarlett 4i4 4th Generation is a professional USB-C audio interface designed for musicians, producers, singers, keyboard players, and content creators who need flexible recording and monitoring connections in one compact device.
It features two low-noise microphone preamps, two additional rear-panel line inputs, four balanced line outputs, MIDI connectivity, and 24-bit/192kHz audio conversion. This combination makes it suitable for recording vocals and instruments, connecting synthesizers, integrating external audio equipment, and building a versatile home studio.
The Scarlett 4i4 4th Gen also includes Auto Gain, Clip Safe, and two enhanced Air modes to help simplify recording and shape the sound of your performances.
With separate headphone and line-output mixes, USB-C connectivity, and compatibility with Focusrite Control 2, the Scarlett 4i4 provides greater routing flexibility for music production, podcasting, streaming, and professional recording workflows.
Four-Input and Four-Output Design
The Focusrite Scarlett 4i4 4th Gen is designed for recording setups that need more connectivity than a basic two-input interface.
It provides two front-panel microphone, line, and instrument preamps, alongside two additional rear-panel line inputs. This arrangement allows you to connect microphones, guitars, keyboards, synthesizers, and other compatible audio sources.
The four balanced line outputs provide additional flexibility for connecting studio monitors, external audio equipment, and other compatible devices.
As a result, the Scarlett 4i4 is particularly useful for producers and musicians who work with several instruments or need multiple output connections in their recording setup.
Two High-Quality Microphone Preamps
The Scarlett 4i4 4th Gen features two low-noise microphone preamps with a gain range of up to 69dB.
These preamps are designed to capture detailed audio from compatible microphones while providing sufficient gain for a wide range of recording applications.
You can use the two front-panel inputs to record vocals, spoken-word content, acoustic instruments, and other microphone sources.
Both preamps also support compatible line-level and instrument signals, making the interface suitable for different recording workflows.
For example, you can record a vocalist and guitarist simultaneously or connect microphones for interviews and podcast production.
Two Additional Rear-Panel Line Inputs
Unlike simpler two-input interfaces, the Scarlett 4i4 includes two additional rear-panel line inputs.
These inputs are useful for connecting compatible line-level equipment such as synthesizers, keyboards, drum machines, and other electronic instruments.
This arrangement allows you to keep additional equipment connected to your studio without constantly moving cables between the front and rear panels.
For musicians who work with multiple instruments, these extra inputs make recording and integrating external equipment more convenient.
24-Bit/192kHz Audio Conversion
The Focusrite Scarlett 4i4 4th Gen supports 24-bit audio conversion at sample rates up to 192kHz.
Its converters are designed to capture and reproduce audio accurately across supported recording and playback workflows.
The microphone inputs have a published dynamic range of 116dB, while the balanced line outputs offer a published dynamic range of 120dB.
These specifications support detailed recording and monitoring for music production, voiceovers, and other professional audio applications.
You can choose a suitable sample rate in your recording software according to your project requirements and computer capabilities.
Auto Gain for Easier Recording Setup
The Scarlett 4i4 4th Gen includes Auto Gain, which helps you establish suitable recording levels automatically.
When activated, the feature analyses the incoming audio and adjusts the input gain to help you achieve an appropriate recording level.
This is useful when recording vocals, guitars, and other sources, especially when you want to spend less time adjusting levels manually.
Although Auto Gain simplifies setup, check your recording levels before beginning an important take.
Clip Safe for Recording Protection
Clip Safe helps protect your recordings from unwanted digital clipping.
When enabled, the Scarlett 4i4 monitors incoming audio and can automatically adjust the gain when necessary to help prevent the signal from becoming too loud.
This is particularly useful when recording dynamic performances, where a singer or musician may suddenly become louder.
Together, Auto Gain and Clip Safe provide practical assistance when setting up recordings and managing input levels.
Enhanced Air Modes for Vocal and Instrument Recordings
The Focusrite Scarlett 4i4 4th Gen features two enhanced Air modes: Presence and Harmonic Drive.
- Presence: Adds high-frequency presence to suitable sources, helping vocals and instruments sound more forward in a mix.
- Harmonic Drive: Adds harmonic character to the midrange, giving suitable sources additional colour and perceived punch.
These modes provide different tonal options when recording vocals, guitars, keyboards, and other instruments.
You can experiment with the available settings to find a sound that suits your source and production style.
Instrument Inputs for Guitars and Bass
The Scarlett 4i4 provides instrument input functionality on its two front-panel inputs.
These inputs support compatible high-impedance sources, including electric guitars and bass guitars, allowing you to connect them directly to the interface.
This is useful for recording direct instrument signals into a digital audio workstation or using compatible amplifier simulation software.
The front-panel controls make it convenient to select instrument mode when required.
For the best results, use the appropriate input mode for your source and adjust the gain to maintain a clean recording level.
48V Phantom Power for Condenser Microphones
The Scarlett 4i4 4th Gen supports switchable 48V phantom power for compatible condenser microphones.
This makes it suitable for studio vocal recording, podcasting, voiceovers, and acoustic instrument recording.
You can connect compatible condenser microphones to either of the two front microphone inputs and enable phantom power when required.
Always check the requirements of your microphone and connected equipment before activating phantom power.
Four Balanced Line Outputs
One of the main advantages of the Scarlett 4i4 over more basic interfaces is its four balanced 1/4-inch TRS line outputs.
These outputs provide additional routing options for compatible studio monitors, external processors, and other audio equipment.
For example, you can connect studio monitors and route additional signals to compatible external equipment, depending on your software and output configuration.
This flexibility makes the Scarlett 4i4 particularly useful for producers who need more than one stereo output path.
Separate Headphone and Line-Output Mixes
The Scarlett 4i4 4th Gen supports separate mixes for its headphone and line outputs.
This allows you to configure monitoring for different listening requirements using Focusrite Control 2 and compatible recording workflows.
For example, a performer can monitor a headphone mix while the main line outputs feed studio monitors or other connected equipment.
This feature is useful for recording sessions, music production, and setups where different audio signals need to be routed to different destinations.
MIDI Input and Output for Synthesizers and Controllers
The Scarlett 4i4 includes 5-pin DIN MIDI input and output connections for compatible MIDI equipment.
These connections allow you to integrate supported synthesizers, keyboards, controllers, and other MIDI devices into your computer-based music production setup.
MIDI connectivity is particularly useful when working with hardware instruments, sequencing equipment, and digital audio workstations that support external MIDI devices.
By combining audio and MIDI connections in one interface, the Scarlett 4i4 helps keep your studio setup organised.
Loopback for Streaming and Content Creation
The Scarlett 4i4 4th Gen supports loopback functionality for compatible computer-based workflows.
Loopback allows supported computer audio to be routed into recording, streaming, and communication applications.
This is useful for recording system audio alongside a microphone, producing tutorials, livestreaming, and creating other online content.
Available routing depends on your operating system, Focusrite Control 2 configuration, and the software you use.
USB-C Connectivity and Focusrite Control 2
The Scarlett 4i4 connects to a compatible computer using USB-C and uses the USB 2.0 protocol.
It is designed for use with supported Windows and macOS systems and works with Focusrite Control 2 for additional configuration and routing options.
The software allows you to manage supported input and output settings and configure monitoring workflows.
Check Focusrite’s current compatibility information before installation to ensure your operating system and computer meet the requirements.
Included Recording Software
The Focusrite Scarlett 4i4 4th Gen includes access to a selection of recording software and production tools.
The manufacturer’s software offering includes:
- Ableton Live Lite
- Pro Tools Intro+
- Cubase LE
- Focusrite Hitmaker Expansion software bundle
The available bundle provides tools for recording, editing, arranging, and producing music.
Depending on current bundle terms, additional instruments, effects, vocal-processing tools, and other production resources may be available.
Software registration, licensing, availability, and compatibility requirements can change. Follow the manufacturer’s registration instructions and check the current software offering when activating your product.
Premium Design and Compact Studio Setup
The Focusrite Scarlett 4i4 4th Gen features a compact desktop design with a distinctive red finish.
Its published dimensions are approximately 180 × 130 × 60mm, and it weighs approximately 798g.
The compact form makes it suitable for desktop recording spaces, home studios, mobile music production, and professional workstations.
With its microphone preamps, additional line inputs, four line outputs, MIDI connectivity, and headphone monitoring, the Scarlett 4i4 provides a flexible recording hub without requiring a large rack-mounted system.
Power Supply
The Scarlett 4i4 4th Gen supports USB power and includes an external USB-C power adapter in the manufacturer’s standard package.
The supplied adapter is rated at 5V, 3A, 15W.
Use the appropriate supplied power equipment and follow Focusrite’s instructions for connecting the interface to your computer and other audio devices.
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What’s in the Box
The manufacturer’s standard package contents include:
- Focusrite Scarlett 4i4 4th Generation USB Audio Interface
- USB-C to USB-C Cable
- USB-A to USB-C Adapter
- USB-C Power Adapter rated at 5V, 3A, 15W
- Getting Started Information
- Important Safety Information Sheet
The Getting Started information is printed inside the box lid according to the manufacturer’s user guide.
Software is provided through the manufacturer’s registration and download process where applicable.
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