Scarlett 4i4 4th Gen Specifications – Focusrite User Guides

These specifications allow you to compare your 4i4 4th Gen with other devices and make sure they’ll work together. If you’re not familiar with these specifications, don’t worry you don’t need to know this information to use your 4i4 4th Gen with most devices

Performance Specifications

Where possible, we measure all performance figures following AES17.

Supported Sample Rates	44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, 192 kHz
Bit Depth	24-bit

Microphone inputs
Frequency Response	20Hz - 20kHz ± 0.06dB
Dynamic Range (A-weighted)	116dB
THD+N	-100dB (Minimum @ 8dB Gain)
Noise EIN (A-Weighted)	-127dBu
Maximum Input Level (at minimum gain)	+16dBu
Gain Range	69dB
Input Impedance	3kΩ

Variable-level Line Inputs
Frequency Response	20Hz - 20kHz ± 0.05dB
Dynamic Range (A-weighted)	115.5dB
THD+N	-100dB (Minimum @ 8dB Gain)
Maximum Input Level (at minimum gain)	+22dBu
Gain Range	69dB
Input Impedance	60kΩ

Fixed-level Line Inputs
Frequency Response	20-20kHz ± 0.02dB
Dynamic Range (A-weighted)	115.5dB
THD+N	-105dB
Maximum Input Level (at minimum gain)	22dBu
Input Impedance	60kΩ

Instrument Inputs
Frequency Response	20Hz - 20kHz ± 0.15dB
Dynamic Range (A-weighted)	113dB @ 33Ω/115dB @ 300Ω
THD+N	-80dB (Minimum @ 8dB Gain)
Maximum Input Level (at minimum gain)	+12dBu
Gain Range	62dB
Input Impedance	1MΩ

Line Outputs
Frequency Response	20Hz - 20kHz ± 0.02dB
Dynamic Range (A-weighted)	120dB
THD+N	-112dB
Maximum Output Level	+16dBu
Output impedance	100Ω

Headphone Output
Frequency Response	20Hz - 20kHz ± 0.1dB @ 33Ω/300Ω
Dynamic Range (A-weighted)	112dB @ 33Ω 115dB @ 300Ω
THD+N	-99dB @ 33Ω (Minimum) -108dB @ 300Ω (Minimum)
Maximum Output Level	5dBu into 33Ω 11dBu into 300Ω
Maximum Output Power	57mW into 33Ω 27mW into 300Ω
Output impedance	11Ω

Physical and Electrical Characteristics

Analogue Inputs
Connectors	Two front panel Neutrik® XLR combo connectors Two rear panel Neutrik® 6.35mm (1/4”) jack sockets
Mic/Line switching	Automatic
Phantom Power (48v)	Front panel 48V (phantom power) button or switch in software
Line/Instrument switching	Front panel Inst button or switch in software
Auto Gain	Front panel Auto button or switch in software
Clip Safe	Front panel Safe button.
AIR function	Front panel Air button or switch in software

Analogue Outputs
Balanced Outputs	Four rear-panel Neutrik®6.35mm (1.4") TRS jack sockets
Headphone Output	Front panel stereo 6.35mm (1.4") TRS jack socket
Main Output Level Control	Front panel analogue control with pre-fade output level meter
Headphones Level Control	Front panel analogue control

Other I/O
USB	One USB 2.0 Type-C connector for data and power - 1.5A One USB Type-C power connector - 5V DC 7.5W

Front Panel Indicators
Channel Selection	White/Green LEDs for channels 1 and 2
Select button	White/Green Select LED
48V	White/Green 48V LED (depending on the selected channel)
Inst	White/Green Inst LED (depending on the selected channel)
Auto	White Auto LED to initiate Auto Gain
Clip Safe	White/Green Safe LED (depending on the selected channel)
Air Mode	White, green, amber Air LED (depending on the selected channel and selected Air mode)
Output Level Meter	Three-colour LED ring around Output control.
USB	USB LED

Environmental
Operating Temperature	40°C / 104°F Maximum ambient operating temperature

4i4 4th Gen Weight and Dimensions

Weight	798g (1.76lbs)
Height	60mm (2.36")
Width	180mm (7.09")
Depth	130mm (5.12")

A diagram of the 4i4 4th Gen with dimensions.

Scarlett 4i4 channel order

Scarlett 4i4 input channels

Input	Channel
1	Input 1 (Mic/Line/Inst)
2	Input 2 (Mic/Line/Inst)
3	Input 3 (Line)
4	Input 4 (Line)
5	Loopback 1
6	Loopback 2

Scarlett 4i4 output channels

Output	Channel
1	Output Left
2	Output Right
3	Line Output 3
4	Line Output 4
5	Headphones Left
6	Headphones Right

Managing Windows playback and recording channels

Some Windows applications, such as Zoom, Microsoft Teams, OBS Studio, or web browsers, do not support the ASIO driver type used by professional audio software. Instead, they rely on a different style of driver that accesses the channels exposed by Windows in the Sound Settings.

By default, when you connect a Focusrite interface to a Windows computer a single Playback device and a single Recording device appear in non-ASIO applications.

To avoid confusion, using the Focusrite driver, you can choose which channels Windows should show or hide to these apps. This won’t affect how the interface works in your DAW (like Ableton Live or Cubase), which uses the ASIO driver directly.

Note

The Focusrite driver is installed with Focusrite Control 2 which you can download at any time from:

downloads.focusrite.com

To show the full channel set to non-ASIO applications on Windows:

Click the Focusrite Notifier icon in the Windows taskbar. This opens the show/hide window.
Choose the channels you want to show to non-ASIO apps.

For example if you want to use line inputs 3/4 into streaming software, tick Analogue 3 + 4.
Click OK.
Open your non-ASIO app, you can now see each pair of input channels.

This does not affect ASIO apps

ASIO-compatible software ( most DAWs like Logic Pro, Ableton Live, Cubase, FL Studio, etc.) uses its own driver and will still show all channels, even if they’re hidden in Windows Sound Settings.

This means you can hide channels from Zoom or OBS without affecting your DAW setup.