Do you actually need an audio interface?
An audio interface converts the analog signal from an XLR microphone into a digital signal your computer can record. You need one if and only if your microphone has an XLR connection. USB microphones (Blue Yeti, HyperX QuadCast, Rode NT-USB Mini) do not require an interface.
Quick recommendation by situation
- Solo podcaster, one XLR mic: Focusrite Scarlett Solo (1 XLR input, USB-C)
- Two hosts recording together: Focusrite Scarlett 2i2 (2 XLR inputs)
- Want the best preamp quality under $200: Audient iD4 MkII
- Need four inputs for a panel: Focusrite Scarlett 4i4 or Behringer UMC404HD
- Budget option that works: Behringer UMC202HD
Comparison table
| Interface | XLR Inputs | Connection | Best For | Price Range | Link |
|---|---|---|---|---|---|
| Focusrite Scarlett Solo 4th Gen | 1 | USB-C | Solo podcasters | $109–$129 (verify) | Amazon → |
| Focusrite Scarlett 2i2 4th Gen | 2 | USB-C | Two-person shows | $169–$199 (verify) | Search → |
| Audient iD4 MkII | 1 | USB-C | Preamp quality seekers | $149–$179 (verify) | Search → |
| Behringer UMC202HD | 2 | USB-A | Tight budgets | $49–$69 (verify) | Search → |
⚠️ All prices are reference ranges. Click any link to see the current price on Amazon.
Focusrite Scarlett Solo (4th Generation)
The Scarlett Solo is the default recommendation for a reason: excellent preamp quality, straightforward software, USB-C connectivity, and solid build quality at a fair price. The 4th generation added the "Air" mode (a gentle high-frequency lift that adds presence to vocals) and improved preamp noise floor compared to previous generations. One limitation: it only has one XLR input, so it works for solo recording only.
Focusrite Scarlett 2i2
If you record two people simultaneously, this is the obvious step up. Two XLR/TRS combo inputs, same quality preamps as the Solo, same software bundle. The price difference over the Solo is modest. If there is any chance you will record a co-host or guest in the same room, the 2i2 is worth the extra cost to avoid having to upgrade later.
Audient iD4 MkII
The iD4 is a serious competitor to the Scarlett line. Audient's preamps have a slightly warmer character that some vocalists prefer. The hardware volume knob and scroll control are well-designed for day-to-day use. If sound quality is your primary concern and you can find it at a similar price to the Scarlett 2i2, it is worth comparing.
What about phantom power?
All interfaces listed here provide 48V phantom power, which is required by condenser microphones (including the AT2020). Dynamic microphones like the Shure SM7B do not need phantom power, but they need significantly more gain, which some entry-level interfaces struggle to provide cleanly. The SM7B pairs better with a dedicated preamp like the Cloudlifter.
Which interface should most podcasters buy?
For a single host recording a solo show or remote interview: the Focusrite Scarlett Solo. It has one XLR input, 56dB of clean gain, USB-C, and a headphone output with direct monitoring. For recording two people in the same room simultaneously: the Scarlett 2i2 (two XLR inputs). Neither choice is wrong; the Solo saves money if you are certain you will always record alone.
Frequently asked questions
Do I need an audio interface for a USB microphone?
No. USB microphones (Blue Yeti, HyperX QuadCast) have a built-in interface and plug directly into a USB port. An audio interface is only needed for XLR microphones, which output an analog signal that requires external conversion. If you already own a USB microphone and are satisfied with the sound, there is no need to buy an interface.
What is phantom power and do I need it?
Phantom power (+48V) is a DC voltage supplied through the XLR cable that powers condenser microphone capsules. All of the interfaces listed here supply phantom power. Dynamic microphones like the Shure SM7B do not require phantom power, but receiving it does not damage them. Enable phantom power when using condenser microphones; it is safe to leave it enabled for dynamics.
Will any audio interface work with any XLR microphone?
Yes, with one practical caveat: the interface must provide sufficient gain for the microphone. Low-output dynamic microphones like the Shure SM7B require more gain than most budget interfaces can cleanly provide. The Focusrite Scarlett Solo has 56dB maximum gain, which is borderline for the SM7B. An inline preamp (Cloudlifter CL-1) solves this at additional cost. Condenser microphones are less demanding and work cleanly with any interface listed here.
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See also: Best Podcast Microphones · Focusrite Scarlett Solo Review · AT2020 Review · Best Setup Under $200 · Budget Home Studio Gear · Best Webcams for Streaming