EVO 4 vs Scarlett Solo: More Inputs Aren’t Always Better

Audient EVO 4 vs Scarlett Solo: Which Should You Buy?

The biggest mistake you can make here is paying attention to which interface can technically do more instead of asking which one better matches the way you'll actually record.

For most people building a compact one-person home studio, I'd choose the Focusrite Scarlett Solo 4th Gen. Its one-mic-plus-instrument layout covers the setup many solo musicians, vocalists, voice-over creators, and home recordists actually use. You also get separate physical gain controls, clear gain halos, direct monitoring, Air mode, and a metal enclosure.

One thing I'd separate from the interface decision is the rest of your desk connectivity. If your laptop also runs a Thunderbolt dock, fast external storage, or other high-bandwidth studio gear, this is one place where I wouldn't save a few dollars on an unknown cable. A certified Thunderbolt 4 cable for a serious studio desk such as the Cable Matters 2m model gives you extra reach while supporting high-speed data and power for compatible Thunderbolt equipment.

The Audient EVO 4 becomes the smarter purchase when your sessions need more flexibility. Its second microphone preamp is a meaningful advantage if you want to record two microphones simultaneously, and Smartgain can remove some of the guesswork from setting input levels.

So my decision wouldn't come down to which interface has the longer feature list. I'd choose based on whether that second microphone input is something you'll genuinely use.

Here's the easiest way to decide: if your normal session is you, one microphone, and perhaps a guitar or bass, I'd take the Scarlett Solo 4th Gen. You're getting an interface designed around that exact kind of compact recording setup without paying attention to capabilities you may never use.

This is also why I'd put more of the budget into the microphone when you're building a one-person vocal or voice-over setup. Instead of choosing an interface around an extra input you may never connect, that money can go toward a premium XLR microphone you'll keep as your studio grows, like the Shure SM7B. It's the kind of upgrade that directly becomes part of every vocal, podcast, or voice-over session you record.

I'd switch my recommendation to the EVO 4 the moment a second microphone becomes part of the plan. Recording two people, experimenting with two-mic techniques, or wanting more input flexibility gives its second preamp a practical purpose rather than making it another specification on the box.

My pick: Focusrite Scarlett Solo 4th Gen. It wins for the buyer I think is most likely to be comparing these two: someone who wants a compact interface for recording themselves and values an uncomplicated, hands-on workflow. The EVO 4 is the one I'd buy instead when two microphone inputs or Smartgain solves a specific problem in the setup.

One Mic Is Fine, Until You Need Something Else

The Second Mic Input Changes This Comparison

The Scarlett Solo 4th Gen is still my overall pick, but there's one question I'd answer before buying it: are you certain one microphone input will be enough?

That's not a problem when you're recording yourself. Plug your microphone into the Scarlett's XLR input, connect a guitar or bass to its instrument input, and you have a compact setup that makes a lot of sense for a solo musician or creator.

For that kind of one-person setup, I'd also put some of the budget into the monitoring side rather than buying extra inputs just because they're available. A pair of closed-back studio headphones you can actually record in, such as the Beyerdynamic DT 770 PRO 80 Ohm, gives you a dedicated pair for monitoring vocals or instruments while helping keep playback from spilling back into your microphone.

The limitation appears when the second source also needs a microphone preamp. You might invite someone onto your podcast, record two vocalists, experiment with two microphones on an acoustic instrument, or capture a performance with a stereo microphone pair. At that point, the Solo's instrument input doesn't substitute for a second XLR microphone preamp.

The Audient EVO 4 gives you two mic/line inputs, so those sessions can happen without replacing the interface. That's the EVO 4 advantage I'd take seriously even if you only use one microphone today: it changes what you can connect tomorrow.

As your setup grows, microphone placement starts mattering too. Instead of leaving your mic on a small desk stand and leaning toward it every time you record, I'd add a premium boom arm that keeps your microphone exactly where you need it, like the Elgato Wave Mic Arm Pro. Its long reach and low-profile design make it easier to bring the mic into a comfortable recording position and move it away again when you need the desk space.

When the EVO 4's Extra Input Is Actually Worth Having

• Two-person podcast or interview: each person can have a separate XLR microphone and recording channel.
• Two-mic recording: you have the option to experiment with microphone placement instead of being locked to a single mic.
• Stereo microphone techniques: two matching microphones can be recorded simultaneously when your project calls for a stereo capture.
• Vocals and spoken-word recording: extra microphone inputs won't help much if plosives are ruining otherwise clean takes. For a vocal mic that gets used regularly, I'd rather buy a premium metal pop filter built for serious vocal recording like the Stedman Proscreen XL. It gives you a large screen for controlling bursts of air from close vocals without putting a traditional fabric screen in front of the microphone.
• A second vocalist or performer: adding another microphone doesn't immediately mean shopping for another interface.
• A setup that's still changing: if you're new to recording and don't yet know what your studio will become, the second preamp gives you more room to experiment.

But Don't Buy an Input Just Because You Might Need It Someday

• You always record alone: one XLR microphone input may be all you'll realistically use.
• Your normal setup is vocal mic + guitar: the Scarlett Solo is specifically well suited to this kind of one-person recording chain.
• You want to start mixing through speakers: that can be a more meaningful next upgrade than buying extra inputs you don't expect to use. I'd put that budget toward a pair of studio monitors built for hearing what your mix is actually doing, like the Yamaha HS5s. Both interfaces can feed powered monitors, giving you a proper speaker-monitoring setup for editing and mixing instead of relying on headphones for every decision.
• You prefer dedicated controls: the Scarlett gives you separate physical gain controls rather than routing multiple functions through the EVO 4's central control system.
• You want the more substantial enclosure: the Scarlett Solo's metal chassis may appeal more if your interface will be moved around regularly.

This is why I wouldn't automatically call the EVO 4 better simply because it has another microphone preamp. An unused input doesn't improve your recordings. For someone who spends almost every session recording one microphone and perhaps an instrument, I'd still rather have the Scarlett Solo 4th Gen.

There's another upgrade I'd make before buying inputs that may sit unused: give the equipment you already own a proper place to live. If your interface, computer, monitors, headphones, and controller are competing for space on a regular table, a studio desk designed around the gear you actually use like the Glorious Sound Desk Pro, can be a more useful investment. It gives your recording setup dedicated space instead of forcing every new piece of gear onto an increasingly crowded desktop.

My verdict: choose the Scarlett Solo if your studio revolves around recording yourself with one microphone. Choose the EVO 4 instead if you can already name a situation where two microphones will be connected at the same time. That's one difference substantial enough to overturn my overall Scarlett recommendation.

Smartgain or Simple Knobs?

Setting gain sounds trivial until you're recording yourself from across the desk. You speak or play, check the level, reach for the interface, try again, and repeat until the signal lands where you want it.

The Audient EVO 4 and Focusrite Scarlett Solo 4th Gen solve that little problem in very different ways. EVO tries to reduce how much level-setting you have to do. Scarlett gives you conventional controls and leaves the decision in your hands.

Whichever control style you prefer, don't overlook what happens after the signal leaves the interface. If your studio monitors are sitting directly on the same desk you're reaching across all day, I'd put them on a pair of adjustable isolation stands that get your studio monitors off the desk like the IsoAcoustics ISO-155. They let you raise and angle your monitors toward your listening position while isolating them from the surface underneath.

Which Control Style Will Feel Better Every Day?

There's an important distinction here: Smartgain doesn't make the EVO 4 sound better. It's a workflow feature. Its value is the time and uncertainty it can remove before you press record.

There's also a point where I'd stop worrying about which interface gives you the more convenient control and put that budget toward controlling the music you're actually making. If you use virtual instruments, synths, or drum plugins, a 61-key MIDI controller that puts more of your DAW under your hands, like the M-Audio Oxygen 61 MKV, can make a much bigger difference to your production workflow, giving you keys plus hands-on controls for playing, adjusting tracks, and working inside your software.

And manual gain isn't automatically harder. Once you've learned roughly where your microphone and voice or instrument normally sit, adjusting a physical gain knob can become almost automatic. That's one reason I prefer the Scarlett Solo's control layout for everyday solo recording.

The owner feedback you supplied reinforces both sides of this comparison. EVO 4 owners repeatedly called Smartgain convenient and appreciated being able to get into a recording quickly. Scarlett Solo owners, meanwhile, praised its intuitive controls, gain indicators, easy setup, and ability to get recording without much complication.

Once recording becomes this easy, storage is one upgrade I'd plan for before your laptop starts filling with sessions, sample libraries, and finished projects. I'd keep a fast 2TB external SSD for keeping your recording projects together, like the Samsung T7 Shield on the studio desk. It gives you plenty of dedicated space for sessions and project files without making your computer's internal drive carry your entire recording library.

Where Each Approach Can Frustrate You

Don't buy the EVO 4 solely because Smartgain sounds easier. You may eventually find that you prefer setting gain yourself, especially when you already know your microphone and recording levels. One EVO owner in the feedback you provided even felt the automatic gain feature wasn't appropriate for every application.

Gain is only one part of getting a studio setup right. Once you start mixing through monitors, I'd rather measure what the room is doing than keep making adjustments by guesswork. A measurement microphone for understanding how your room affects your monitors, like the dbx RTA-M, gives you an omnidirectional reference mic you can use with compatible room-analysis and measurement tools when you're ready to evaluate your listening space more seriously.

The Scarlett has the opposite tradeoff. It won't perform that initial gain-setting step for you. If you're alone at a microphone positioned away from the interface, getting the level exactly where you want it can involve more manual adjustment.

My pick here: Scarlett Solo 4th Gen. Smartgain is genuinely useful, and I'd give EVO 4 the advantage for someone who wants assistance setting levels. But for the typical solo studio, I prefer Scarlett's dedicated controls because they're predictable, quick to adjust, and easy to understand every time you sit down.

Will Either Actually Sound Better?

Here's where I'd be careful with this comparison: I wouldn't buy either interface expecting it to suddenly make the same microphone sound dramatically more expensive.

Both the Audient EVO 4 and Focusrite Scarlett Solo 4th Gen are capable of producing clean recordings. In a normal home studio, differences in your microphone, mic position, room, performance, and recording level can matter more than the small sonic differences between these two interfaces.

I'd think about the power side of the studio the same way. Once your desk holds an interface, computer, powered monitors, and other recording gear, plugging everything into the cheapest power strip isn't where I'd save money. A surge protector and power conditioner built for a growing studio like the Furman PST-8 gives you one place to connect and protect multiple pieces of equipment while also filtering AC line noise.

That's also consistent with the owner feedback I looked through. EVO 4 owners repeatedly described its preamps as clean and transparent, while Scarlett Solo owners praised its clarity on vocals, instruments, and dynamic microphones.

The Differences I'd Actually Care About

This is also why I wouldn't obsess over sample-rate numbers when choosing between them. The EVO 4 supports recording up to 24-bit/96kHz, while the Scarlett Solo 4th Gen can go up to 24-bit/192kHz. That looks like a large difference in a comparison table, but it isn't the reason I'd choose the Scarlett for a home studio.

I'd think about portability the same way. If you're going to record podcasts, vocals, instruments, or content away from your normal desk, protecting the equipment you already own matters more to me than chasing a higher sample-rate number. A padded recording gear bag for taking your studio setup on the road, like the Gator G-MIXERBAG-1515, gives you room to organize an interface, cables, headphones, and other recording essentials instead of carrying everything loose in a regular backpack.

For most vocals, podcasts, guitar recordings, voice-over, and home music production, buying the Scarlett because you expect 192kHz alone to make your finished recording obviously superior would be the wrong reason.

What Will Improve Your Recording More Than Switching Interfaces?

Before replacing one of these with the other in pursuit of better sound, I'd look at the rest of the recording chain. A microphone that suits your voice or instrument, sensible mic placement, controlled recording levels, and a quieter recording environment can produce a much larger practical improvement.

If you're still questioning whether either one is the best use of your budget, I'd widen the comparison before spending more on tiny specification differences. I've also compared audio interfaces under $200 for different recording setups, including options for solo creators, podcasting, dynamic microphones, and buyers who simply want to spend less.

Even the way you use the interface matters. A clean preamp can't rescue a microphone that's badly positioned, and an expensive microphone can still produce a poor recording when the room dominates what it captures.

In other words, don't expect the interface to solve problems that are happening before the signal reaches it.

So Which One Gets My Vote for Sound?

I'd still give the overall edge to the Scarlett Solo 4th Gen, but not because I think every recording through it will automatically sound better than the EVO 4.

That recommendation changes if streaming is your main job for the interface. Going live puts more emphasis on microphone gain, monitoring, and how easily you can manage your audio without interrupting the stream. I've compared XLR audio interfaces built around streaming workflows if you want to see which options make more sense when live content matters more than music recording.

I prefer it because you start with a capable, clean recording path and then have Air mode as an additional creative option when it suits the source. That's more useful to me than chasing a tiny difference in converter or preamp character that many buyers may struggle to notice in a finished mix.

Choose the EVO 4 if you want a clean, straightforward capture and would rather make your tonal decisions later. Choose the Scarlett Solo if you want that same basic goal but like having another sound-shaping option available directly from the interface.

Your Recording Setup Could Make the Choice Obvious

Forget the spec sheet for a minute and picture your next recording session. What's actually connected to the interface?

That's the same question I'd use if you're still building the rest of your studio. My comparison of audio interfaces for different home recording setups gives you a wider set of options when you want to choose around what you'll actually record rather than narrowing the decision to the EVO 4 and Scarlett Solo alone.

That question separates these two surprisingly quickly. The Scarlett Solo 4th Gen makes the most sense when your studio revolves around one person, one microphone, and perhaps an instrument. The EVO 4 starts pulling ahead when your sessions require two microphones or when you want more flexibility from the same small box.

Find the Setup That Looks Most Like Yours

Notice what doesn't appear in those decisions: which interface has the more impressive specification on paper. Once you match each interface to a real recording session, several of those specifications stop mattering.

There's also one recording setup where I'd question whether you need either interface at all. If you're mainly capturing interviews, conversations, or podcasts away from a permanent desk, a wireless podcast microphone built for recording away from the studio can remove the interface, XLR cables, and conventional microphone stands from the setup entirely.

A solo vocalist doesn't become better equipped simply because another microphone input is sitting unused. And someone recording two XLR microphones won't care how elegant the Scarlett Solo's workflow is when there isn't a second microphone preamp available.

Don't Confuse “More Flexible” With “Better for You”

This is the strongest argument for the EVO 4, but it's also where I think buyers can overestimate what they'll eventually need.

It's easy to imagine a future studio filled with microphones and different recording configurations. If your real routine is likely to remain one vocal mic, one guitar, headphones, and monitors, buying around hypothetical sessions shouldn't outweigh how well the Scarlett Solo fits what you do every week.

The same logic applies to the microphone sitting on your desk. If one vocal mic is going to handle most of your sessions, I'd rather make that microphone comfortable and consistent to use. A boom arm that keeps your microphone stable and properly positioned can be a more practical addition than paying for recording flexibility that your everyday setup never uses.

On the other hand, if you've already been thinking about adding a second vocalist, recording interviews, experimenting with stereo microphones, or capturing two mic positions, that's no longer hypothetical. In that case, I'd buy the EVO 4 now rather than discover the Solo's main limitation after your studio has already grown around it.

My Setup-Based Decision

Scarlett Solo 4th Gen remains my overall winner because the most natural buyer for this size of interface is someone recording primarily by themselves. It gives that person the inputs they need without making the workflow more complicated than necessary.

Podcasting is one situation where I'd widen the comparison before making that decision. A solo show may fit the Scarlett perfectly, but once a co-host, guest, or separate headphone mixes enter the picture, I'd compare audio interfaces designed around different podcast setups before assuming either of these two is automatically the right choice.

But the EVO 4 wins the moment two microphones become a normal part of your sessions. If that's your setup, I wouldn't sacrifice the second mic preamp just to follow my overall recommendation.

What Could Annoy You After a Few Months?

The feature that convinces you to buy an interface isn't always the thing you notice after six months. By then, what matters is whether the box feels effortless every time you record, or whether one small compromise keeps reminding you that you chose the wrong one.

Gamers should apply that same thinking to the entire recording chain. If you mainly need clear voice for Discord, multiplayer chat, and occasional streaming, managing an interface, XLR microphone, headphones, and extra cables every day may be more setup than you actually need. I'd compare wireless gaming headsets that prioritize microphone quality before committing to a full interface-based setup.

That's why I paid particular attention to the owner feedback you supplied. Most of it is positive for both interfaces, but there are a few frustrations worth understanding before deciding.

The Annoyances I'd Actually Think About Before Buying

Two Complaints I Wouldn't Blow Out of Proportion

One EVO 4 owner reported persistent crackling and driver problems. That's obviously serious for that owner, but the broader feedback you supplied doesn't justify presenting it as something every EVO buyer should expect. Another EVO owner specifically praised the driver experience after having reliability problems with an older interface.

Similarly, one Scarlett Solo owner disliked receiving a USB-A-to-USB-C cable rather than the USB-C-to-USB-C cable they wanted. That's worth checking against the computer you're connecting, but I wouldn't let an inexpensive cable determine which interface stays on your desk for the next several years.

There's One EVO 4 Behavior I'd Check Against Your Monitoring Setup

One of the more meaningful EVO complaints in the feedback you supplied came from an owner who disliked the way plugging headphones into the interface affected the monitor outputs. Their particular workflow required using headphones while keeping other output routing available, so this became much more than a minor inconvenience.

That's a good example of why a complaint needs context. A solo creator who simply switches between headphones and speakers may never care. Someone building a more unusual monitoring or external-hardware setup could care a lot.

Which Compromise Would I Rather Live With?

For the typical solo home studio, I'd still rather live with the Scarlett Solo's limitations. Its biggest restriction is obvious before you buy it: you get one microphone preamp. If you know that's enough, there isn't much mystery about what you're signing up for.

The EVO 4 asks you to accept a different set of compromises in exchange for more input flexibility and Smartgain. The plastic enclosure and multifunction control system don't stop it from being a capable interface, but they're things you'll physically interact with every time you record.

My long-term pick: Scarlett Solo 4th Gen. I'd choose it when I know my studio will remain a one-mic setup. I'd choose the EVO 4 instead when the Solo's missing second mic preamp is likely to become a much bigger annoyance than EVO's build or control compromises.

Buy the One That Fits What You’ll Record Next

You don't need to predict what your studio will look like five years from now. You only need to think about the next thing you're realistically going to record.

That's the easiest way I'd settle the EVO 4 vs Scarlett Solo decision. Don't pay for possibilities you may never use, but don't save a little now if you can already see yourself running into an input limitation.

I'd Choose the Scarlett Solo 4th Gen If...

I'd Buy the EVO 4 Instead If...

Don't Buy for a Studio That Doesn't Exist Yet

This is where I'd be careful with the word future-proof. More flexibility isn't automatically more valuable.

If you're a singer-songwriter, guitarist, voice-over artist, streamer, or solo creator and everything you actually plan to record works with one mic plus an instrument input, you haven't outgrown the Scarlett Solo just because the EVO 4 has another microphone preamp.

But if “maybe I'll need two microphones” has already turned into “I'm buying another mic for my guest,” that's different. Buy the EVO 4 and remove that limitation before it becomes your reason to replace the interface.

My Final Pick: Focusrite Scarlett Solo 4th Gen

For most people shopping between these two, I'd buy the Focusrite Scarlett Solo 4th Gen.

It covers the recording chain many solo creators actually need: one XLR microphone, one instrument input, headphones, and studio monitors. You also get the conventional hands-on workflow, metal enclosure, Air mode, and enough capability to build a serious small recording setup without buying features simply because they might become useful someday.

The EVO 4 is the one exception I'd take seriously. If two XLR microphones are part of what you're going to record next, I'd choose it over the Scarlett Solo. That's a meaningful capability difference, not a spec-sheet victory.