Focusrite Scarlett 2i2 4th Gen

When this model makes sense

Two independent microphone inputs for a two-person recording. Start with that job, then check the surrounding connections. A feature on this device does not establish that the computer, software and destination support the same path.

This is part of the current catalog. Current availability in a manufacturer family does not guarantee retail stock, every regional variant or support for every operating-system release. Match the exact model name when reading a product listing.

Three useful fits

• Connect the documented microphone inputs to the computer through one interface; count independent voices before choosing.
• Monitor from the listed outputs and build a separate guest return when the call must not hear itself.
• Record the intended channels into the production application, then play each destination back separately to verify the routing.

• Best starting job: two independent microphone inputs for a two-person recording.
• Upgrade around owned gear: use the setup builder to check this connection against your existing computer and sources before replacing adjacent equipment.
• Controlled comparison: compare the required input, output and workflow using the interface versus mixer guide. Choose the smaller sufficient path when extra hardware does not solve a declared problem.

Connections and decision fields

Read connector shape and data protocol separately. An adapter can change the cable ends; it cannot create a faster host controller, add a microphone preamp or convert protected HDMI into a supported capture source.

Exact identity

Focusrite Scarlett 2i2 4th Gen

Lifecycle

Current catalog

Equipment role

interface

Connector shape

USB-C host; 2 XLR mic; 2 1/4-inch line/instrument; 2 1/4-inch line out; 1 1/4-inch headphone

Data protocol

USB 2.0

Audio inputs

2 microphone preamps; 2 line/instrument inputs

48 V supplied

48 V

Preamp gain (dB)

69

Direct monitoring

Yes

Loopback

Yes

Included parts

Scarlett 2i2 4th Gen; 1 m USB-C to USB-A cable

Usb Gbps

0.48

Host operating systems

Windows on Intel, AMD or ARM64; macOS on Intel or Apple silicon

Usb Channel Configuration

4-in/2-out including loopback

Audio outputs

2 line outputs; 1 headphone output

Max Sample Rate

192 kHz

Bit Depth

24-bit

Power Draw

900 mA over USB

Dimensions

47.5 x 180 x 117 mm

Weight

595 g

Use the listed modes as a starting point for the connection. Before a live session, select the exact source in OBS and record it with the other devices connected. If the required mode is absent, lower the output or change the connection before replacing the source.

Check these conditions first

1. The main limitation: Loopback alone does not remove a guest’s voice from their return. Build a separate mix-minus route before using remote guests, or choose a mixer with that routing available.
2. The rest of the path: the operating system must recognize the input, and the production application must expose the selected mode. A device visible in a system panel may still be unavailable to OBS if another application owns it.
3. The session conditions: check the full intended duration with all the other devices connected. A short isolated test does not expose shared USB contention, camera runtime limits, accidental monitoring loops or changing household upload.

For an interface, count independent microphone inputs and headphone destinations. Loopback can return computer audio, while mix-minus describes what is excluded from a particular return. They solve different problems and should not be treated as interchangeable labels.

If the builder reports a hard blocker, solve that requirement before buying an alternative. A conditional result needs the named check. An unknown result means the information is insufficient; it is not a negative review of this model.

What is included, and what may be missing

• Scarlett 2i2 4th Gen
• 1 m USB-C to USB-A cable

Write down both cable ends and the required data rating. Check length against the real desk route, allowing slack at moving joints without putting tension on a socket. If a host has USB-A and a device arrives with only a C-to-C cable, choose a suitable data cable or adapter; the host’s underlying data speed still applies.

Mounting parts deserve the same check as signal cables. Confirm thread, clamp thickness, load and available space where these apply. “Mount compatible” is incomplete without the mating connector or dimensions. Keep adapters in the plan so the final wiring sheet does not conceal an extra purchase.

Use the optional cost fields in the builder for amounts you have observed yourself. A missing purchase amount stays unknown and is excluded from the known subtotal; it is never shown as a free item. The site does not display hardware prices or stock.

Place it in the complete setup

The diagram illustrates a direct USB setup. Put Focusrite Scarlett 2i2 4th Gen in its interface role, then follow each required input to an actual source and each output to an actual destination. For an HDMI or XLR component, insert the required capture device or interface between the source and host; do not interpret the direct USB illustration as a universal connection.

1. Connect mounts and power before plugging in the signal cables. Keep the input gain or monitor volume low while changing connections.
2. Select the exact device and mode in the operating system and production software. Close any second application that may be using the same video device.
3. Add each source once. If a routing application already feeds the capture audio to OBS, do not enable a second direct route for the same sound.
4. Record a representative sample with speech, movement and other sources active. Play it back independently of the live monitoring path.
5. Test the platform preview with the intended network and output settings, then save a recovery scene and reconnection order.

Use the Setup Path Builder to produce a connection ledger, or go directly to the pre-stream checklist when you have finished the wiring. For the underlying choice, see interface versus mixer.