Who needs a two-mic interface?

Two-person interview recordists

If each speaker needs a separate microphone input, check for two mic-capable channels rather than relying on a device’s output count.

First-time interface users

If setting two input levels is unfamiliar, gain assistance may make the initial setup simpler. You will still need to listen to a test recording.

Mixed-microphone setups

If the microphones have different power requirements, check their manuals and whether the interface switches 48 V phantom power for both inputs together or by channel.

What matters when choosing?

Start with two simultaneously usable microphone inputs; then consider how you will set levels, power the microphones and monitor the recording.

Concern What to check Who this matters to
Separate microphone inputs Confirm that two mic-capable XLR or combo-XLR inputs work simultaneously and that your recording software can assign them to separate mono tracks. If I want to edit each interview voice separately, I need a microphone input for each speaker. Around 42% of consumers would make separate input paths their primary concern.
Level setting Check whether gain assistance works on both inputs and how you can monitor levels during a test recording. When speakers change volume or move away from their microphones, I want help setting initial levels without overlooking a clipped take. For around 33% of consumers, easier level setting would come first.
Phantom power and monitoring Check each microphone’s 48 V requirement, whether power is switched jointly or by channel, and how live input reaches the headphones. If my microphones need different power arrangements, I want control over each input and a clear way to follow the live recording. Around 25% of consumers would prioritise power and monitoring controls.

Mistakes to avoid

  • Assuming “2-in/2-out” means two microphone inputs

    Two channels overall do not establish that both inputs can accept microphones. A single-preamp interface would not connect the two interview microphones as intended.

    Check the connector descriptions and confirm that two mic-capable inputs can be used at once.

  • Assuming 48 V switches independently on every interface

    According to Focusrite’s user guide, enabling 48 V on the Scarlett 2i2 4th Generation applies it to both XLR inputs. MOTU specifies individual 48 V controls for the M2.

    Read both microphone manuals before choosing between shared and per-channel phantom-power control.

  • Skipping a test because the interface assists with gain

    Gain assistance does not replace checking speaker distance, rehearsal-room noise or whether the software records the intended input on each track.

    Make a short two-person test recording, inspect each track and listen through the headphones you plan to use.

Relevant brands to consider

Focusrite

The Scarlett 2i2 4th Generation is a two-microphone route for users who want assistance setting recording levels.

  • Focusrite specifies two mic preamps, Auto Gain and Clip Safe for this model.
  • Its 48 V setting applies to both XLR inputs together, so check that this suits both microphones.

Audient

The EVO 4 offers two microphone preamps and Smartgain for setting up a two-person recording.

  • Audient states that Smartgain can work on both inputs simultaneously.
  • Check computer compatibility and separate-track routing in your recording application.

MOTU

The M2 is a two-input option for users who want individual input controls and visible metering.

  • MOTU specifies individual gain, 48 V and monitor controls for its two combo inputs, plus a colour LCD.
  • Its two mic-capable inputs do not provide a third separately connected microphone path.

Joybuy products

Related products coming soon.

Common questions

Can a 2-in/2-out interface record two interview microphones separately?

Yes, if both hardware inputs accept microphones and your recording software can assign Input 1 and Input 2 to separate mono tracks. Check both the interface connectors and the software’s input-routing options before buying.

Do both interview microphones need phantom power?

Not necessarily; check each microphone’s documentation before enabling 48 V. Focusrite’s guide says the Scarlett 2i2 4th Generation powers both XLR inputs together, Audient’s EVO 4 guidance describes selecting a channel before enabling 48 V, and MOTU specifies individual 48 V controls for the M2.

How can speakers hear themselves while recording?

Look for hardware or direct monitoring and a suitable headphone connection. Focusrite documents direct-monitoring modes for the Scarlett 2i2 4th Generation, while MOTU lists monitor switches for each M2 input; test headphone level and the balance with computer playback before the interview.