Audio Interface vs USB Mic Explained
Updated Nov 13, 2026 · By 
Jonah Mercer · Editorial policy
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An audio interface takes a separate microphone through XLR and 1/4-inch inputs, while a USB mic plugs straight into the computer with the converter built in. The interface gives a choice of microphones and separate gain for each input, while the USB mic gives a simpler setup with a USB cable. Pick the interface when the mic matters most.
What an audio interface does
An audio interface sits between the microphone and the computer. The microphone plugs into an XLR input, the preamp raises the mic signal, and the interface sends the digital signal to the computer over USB. The Volt 2 Gen 2 has dual mic and instrument inputs, so vocals and an instrument can be captured at the same time. The Mackie Onyx Producer 2x2 and the CIXUN interface also have dual inputs, and each sends 48V phantom power to condenser microphones. The interface also gives a headphone output and direct monitoring, so the player hears the input without delay through the computer.
What a USB mic does
A USB mic puts the microphone, the preamp and the converter in the same housing with a USB cable to the computer. The mic plugs straight into a USB port, so there is no interface, no XLR cable and no separate gain stage to set. That keeps the setup short: a mic, a cable, an input in the recording software. The trade is flexibility: the mic is fixed, so the player cannot swap in a different microphone or add an instrument input on the same device.
Phantom power and inputs compared
Condenser microphones need 48V phantom power, and the interface supplies it: the Mackie Onyx Producer 2x2 and the CIXUN interface each send 48V to the XLR inputs, with the CIXUN showing an indicator light when power is on. The Volt 2 Gen 2 lists dual mic and instrument inputs with auto-gain and clip protection, so levels set themselves and peaks stay out of the recording. A USB mic takes power from the USB cable, so phantom power does not apply. Match the input to the mic: XLR for a condenser or dynamic mic on an interface, USB for a mic with the converter built in.
Which setup fits the recording
Pick an interface when the recording needs more than a mic: the Volt 2 Gen 2, the Mackie Onyx Producer 2x2 and the CIXUN interface each take a mic and an instrument at the same time, and the Mackie adds MIDI I/O and 23 plugins for the session. Pick a USB mic when the recording is a voice or a podcast with a mic and nothing else, since the setup is a cable and a mic. The Y.D.F interface shows the middle ground: a 2x2 USB interface with 48V phantom power and 24-bit conversion, with no DAW software in the box, so the recording software comes from a download.
What you need
Universal Audio Volt 2 Gen 2 USB
A 2-input USB interface with 32-bit audio at up to 192 kHz, dual mic and instrument inputs, auto-gain with clip protection, and a smart display for levels.
- Inputs: 2
- Max sample rate: 192 kHz
- Bit depth: 32-bit, the most here
- 1-year warranty stated
Mackie Audio Interface
A 2-in x 2-out interface at 24-bit/192kHz with Onyx mic preamps, 48V phantom power, MIDI I/O, zero-latency direct monitoring and a headphone output.
- Inputs: 2
- Max sample rate: 192 kHz
- Bit depth: 24-bit
- 48V phantom power
- 1-year warranty stated
CIXUN 2x2 USB-C Audio Interface for PC/Mac Recording
A 2x2 USB-C interface at 24-bit/192kHz with dual XLR/TS inputs, +48V phantom power, a HI-Z selector, direct monitoring and a 2-year warranty.
- Inputs: 2
- Max sample rate: 192 kHz
- Bit depth: 24-bit
- 48V phantom power
- Software named in listing: Pro Tools
- 2-year warranty stated
Y.D.F Audio Interface USB Audio Interface with Mic
A 2x2 USB interface with 24-bit conversion, 48V phantom power and a 0.9 lb body, with no DAW software in the box.
- Inputs: 2
- Max sample rate: 48 kHz
- Bit depth: 24-bit
- 48V phantom power
- Software named in listing: Pro Tools
- 365-day warranty stated
- 0.9 lb, the lightest here
These come from our ranked list Best Audio Interface with USB, which compares them spec by spec.
Frequently asked questions
Do I need an audio interface for a USB mic?
No. A USB mic plugs straight into the computer and takes power from the USB cable, so it needs no interface and no XLR cable. An interface is for a separate XLR microphone or instrument.
Which microphones need 48V phantom power?
Condenser microphones need 48V phantom power to work, and the Mackie Onyx Producer 2x2 and the CIXUN interface send it to the XLR inputs. Dynamic microphones make their signal without outside power.
Can an audio interface record an instrument and a mic together?
Yes. The Volt 2 Gen 2 has dual mic and instrument inputs that capture vocals and instruments at the same time, and the Mackie and CIXUN interfaces also have dual inputs for a mic and an instrument.
Ranked audio interfaces lists
More how-to guides
Product details come from each Amazon listing and can change. Check the listing before you buy.