I want to start a podcast. What is the best audio interface for a solo host with one microphone?

If you’re a solo host using one XLR microphone, I’d start with the Focusrite Scarlett Solo 4th Gen.

• Focusrite Scarlett Solo 4th Gen - $159.99 (Sweetwater)

Why I’d choose it

• One excellent mic preamp — exactly what you need for a one-person podcast.
• Enough gain for demanding dynamic mics without needing an additional preamp in many setups.
• Air mode can add some presence to spoken voice.
• USB-C, bus-powered, and straightforward to set up.
• Headphone monitoring lets you hear yourself while recording.
• It supports up to 24-bit/192 kHz, although 48 kHz is perfectly sensible for podcasting.MusicProductionWiki+1
• Current listings put it around $160, though prices vary.B&H Photo Video

For a podcast, I wouldn't spend hundreds more on an interface expecting dramatically better voice quality. Your microphone, room acoustics, and mic technique will generally matter more than upgrading from this class of interface.

Two alternatives worth considering

• Focusrite Scarlett Solo 4th Gen - $159.99 (Sweetwater)

• MOTU M2 - $199.95 (Sweetwater)

• Focusrite Vocaster One - $149.99 (Best Buy)

• MOTU M2 — around $200 and gives you two mic inputs, excellent metering, and particularly strong headphone monitoring. It's more interface than you need today, but useful if you may eventually record another person.The Podcast Setup Lab+1

• Focusrite Vocaster One — specifically designed around solo podcasting, with podcast-oriented controls and processing. It's worth considering if you want a more purpose-built podcast workflow rather than a general recording interface.Lights & Kits

My practical setup: Scarlett Solo 4th Gen + a good dynamic XLR mic + closed-back headphones + a decent mic arm + some basic room treatment.

If you tell me your budget ($200 / $500 / $1,000+) and what microphone you're considering, I can put together the complete solo-podcast setup.

If you’re a solo host using one XLR microphone, I’d keep it simple: the Focusrite Scarlett Solo 4th Gen is the one I’d start with.

• Focusrite Scarlett Solo 4th Gen USB Audio Interface - $159.99 (Sweetwater)

Why it fits a solo podcast

• One dedicated mic preamp — exactly what you need for one XLR microphone.
• Very clean preamp and 24-bit/192 kHz conversion, so the interface won't be the weak link in your recording chain.SoundGuys+1
• Simple controls — useful when you're simultaneously hosting and recording.
• Direct headphone monitoring lets you hear yourself without relying on computer monitoring latency.
• Air mode can add some presence to speech if you like that sound.
• Current listings I found are around $160, though prices vary by retailer.SoundGuys

Two alternatives worth considering

• Audient EVO 4 - $179.00 (Sweetwater)

• MOTU M2 - $199.95 (Sweetwater)

• Focusrite Scarlett Solo 4th Gen - $159.99 (Sweetwater)

• Audient EVO 4 — particularly interesting if there's a chance you'll eventually have a guest in the room. It has two microphone preamps and Smartgain automatic level setting.MusicProductionWiki

• MOTU M2 — costs more, but has excellent metering, two mic inputs, MIDI I/O, and loopback. It's more interface than you need for a straightforward solo podcast, but useful if you expect to expand into music production.Packapop

One caveat: if you think you'll ever record an in-person co-host or guest with a second microphone, I'd spend the extra money on a two-mic interface now rather than replacing the Solo later. The Scarlett Solo cannot record two microphones simultaneously.MusicProductionWiki

If you tell me which microphone you're considering (e.g. Shure MV7, SM7B, Rode PodMic, etc.) and your budget, I can recommend the complete solo-podcast setup—including mic, interface, headphones, boom arm, and cables.

The Focusrite Vocaster One (priced around $149 ) is the best dedicated audio interface for a solo host using a single microphone.[1]

Watch this overview of great podcast interfaces for solo and video creators to see how they perform in real setups:

1mBest Podcast Setup Guide (2025) — Solo to 4+ Guests!47K views · 1 year agoYouTube · Riverside

For a solo podcaster, you do not need a massive multi-input mixing console. You need clean gain, simple controls, and reliable USB connectivity.

Top Audio Interfaces for Solo Podcasters

• Focusrite Vocaster One: Built specifically for solo creators. It features 70dB of gain (meaning it can power quiet broadcast mics like the Shure SM7B without a external booster), an Auto Gain button to set your volume levels automatically, a physical Mute button, and phone/camera connectivity for mobile or video integration.[1][2]
• Focusrite Scarlett Solo (4th Gen): Priced around $100 , this is the industry-standard entry-level music and voice interface. It features a transparent preamp, a switchable Air Mode to add clarity to your vocals, and rugged build quality, though it lacks the automated podcast-specific shortcut buttons of the Vocaster line.youtube.com+1
• Universal Audio Volt 1: Priced around $150 , it features a built-in Vintage Mic Preamp mode modeled after classic analog studio gear. It gives your voice a rich, warm broadcast tone right out of the box and includes a great bundle of audio plugins.youtube.com+1
• Elgato Wave XLR: Priced around $159 , this compact interface is designed for digital creators and streamers. It features proprietary anti-distortion technology (Clipguard), capacitive touch mute, and deep integration with digital mixing software.

If you tell me which specific microphone you plan to use and your total budget , I can recommend the exact interface and cable combination that fits your setup.

If you’re a solo host with one XLR microphone, I’d buy the Focusrite Vocaster One.

• Focusrite Vocaster One - $149.99 (Sweetwater)

Why it’s the best fit

• Designed specifically for solo podcasting, rather than being a music-production interface adapted for podcasts.
• 70 dB of mic gain, so it can handle demanding dynamic microphones such as an SM7B without a separate gain booster.Focusrite
• Auto Gain sets your microphone level for you.
• Enhance gives you simple voice-processing presets without having to learn EQ/compression immediately.
• One-touch mute is genuinely useful while recording.
• Headphone output + computer/phone connectivity make it easy to bring in remote guests, music, or other audio later.Focusrite
• Current listed price is around $150–$170, making it hard to justify spending $400–$500 on a more elaborate podcast mixer when you're starting with one mic.Focusrite+1

What I'd consider instead

• Focusrite Vocaster One - $149.99 (Sweetwater)

• Universal Audio Volt 2 - $199.00 (Guitar Center)

• RØDECaster Duo - $499.99 (Micro Center)

• Focusrite Vocaster Two - $224.99 (Sweetwater)

• Best simple podcast setup: Vocaster One — my pick.

• Best if you might record music too: Universal Audio Volt 2 — more traditional studio interface, with two inputs and UA's Vintage mic mode.

• Best if you expect to expand into a serious video/streaming setup: RØDECaster Duo — considerably more expensive, but gives you a much more complete production console.

• Best if a second person may join soon: Vocaster Two — two mic inputs and two headphone outputs, while retaining the podcast-oriented workflow.Focusrite

One important point: don't choose an interface based purely on sound quality. With podcasting, the microphone and room acoustics matter at least as much. A $150 interface in a quiet, treated room can sound far better than a $500 interface in a noisy room.

If you tell me your microphone (or the microphone you're considering) and your budget, I can recommend the complete solo setup—mic + interface + boom arm + headphones + recording software—without overspending.