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Universal Audio Apollo Twin X review

In this review, I’ll be looking at the Universal Audio Apollo Twin X Quad, a 10-in/6-out interface that features real-time UAD processing and ample expandability.

This interface has so much to offer when it comes to heightening your productivity in the studio, as it allows you to track and mix through extremely accurate emulations of classic studio hardware without any latency and without overloading your CPU processing.

That said, let’s take a deeper look into what makes this interface so great.

About the author

I’m a producer and audio engineer with over 10 years of experience with a wide range of gear and recording techniques. Throughout my career, I have worked with a myriad of different audio interfaces, from Focusrite, Audient, Universal Audio, and more.

Universal Audio Apollo Twin X audio interface review
Image by Universal Audio

Final verdict on the Apollo Twin X 4.9

Universal Audio’s Apollo Twin X is well worth the money. Its preamps, design, and capabilities in real-time processing are worth the money alone, and it’s safe to say that if you do buy this interface, you won’t regret it.

What I like

  • Great sound quality.
  • Built-in UAD processing enables recording with complex plugin chains in real time.
  • Extremely well built.
  • Expansive software bundle.

What I don’t like

  • Thunderbolt cable isn’t supplied.
Buy UA Apollo Twin X at: SweetwaterAmazon


Use these jump links to navigate to the desired section of the review.

I/O and controls 4.9

Located on the front panel of the interface, you’ll find one Hi-Z line input and a 1/4-inch headphone jack. On the backend of it are two XLR/TRS combo inputs, four analog outputs for your monitors and line out applications, and an optical input which allows for an additional eight inputs.

Universal Audio Apollo Twin X Thunderbolt audio interface
Image: Universal Audio

All of these inputs are Unison-enabled, meaning that you’ll be able to load Unison plugins onto the console’s software, record through them, and achieve the effects of vintage preamps while tracking.

Universal Audio Apollo Twin X (back panel)
Image: Universal Audio

The Apollo Twin X requires a 12 V power supply and connects to your computer through Thunderbolt 3. MacOS users need not worry, however, as the Apollo is backward compatible with Thunderbolt 1 and 2 as well.

Audio recording quality 5.0

Universal Audio’s Apollo Twin X is a pristine, clean-sounding unit. This comes as no surprise, as the Apollos have always boasted superb sound quality. However, the Twin X’s updated AD/DA conversion has taken the interface far beyond its predecessors. The unit has an incredibly smooth signal path with a 127 db dynamic range.

While the Apollo Twin X does have a sample rate of up to 192 kHz, there is a caveat. The interface can only record with two inputs at 192 kHz, whereas if you’re using S/PDIF that number goes down to 96 kHz. The number goes down again to 48 kHz when you choose to utilize the eight inputs provided through ADAT.

Those of you who are familiar with optical digital I/O will find no surprise here, as this is all typical. However, for beginners, it is something to look into.

Preamps 5.0

Without having much else to say about it, the preamps on the Apollo Twin X are stunning. What’s more stunning, however, is the Unison preamp technology integrated into the console and software which bring the preamps well beyond what has ever been considered possible.

At its heart, Unison allows for two-way communication between the mic preamps and Unison-capable plugins. These plugins adjust the preamps circuit within the console, changing the behavior so that they match the character of the plugin.

This is revolutionary for a number of reasons, but in the most practical sense, it means that you’re not just enacting a filter to get the approximation of a classic preamp’s sound – your microphone will actually be interacting with the preamp the same way it would if you were to have the plugin as a hardware unit.

If any of this is going over your head, don’t worry. All it means is that you’ll have a lot more freedom when you’re tracking and that your recordings will sound a whole lot better than if you were to just slap on some random digital plugin.

In use 4.5

This interface could make a great addition to any home studio considering how powerful it is. The only thing I would want to mention here is that its I/O connectivity is a bit lacking. If you’re wanting something for a slightly bigger project, it might be worth checking out a few other audio interfaces that can suit your needs better.

Even though the Twin X is technically a 10-in/6-out interface, 8 out of those 10 inputs are only available through ADAT and S/PDIF, which for beginners looking to enter the realm of intermediate recording, might require a few more purchases before you can get your 10/12/14 mic setup up and running.

Another drawback of this is the fact that the sample rate suffers when using S/PDIF and ADAT, as I mentioned a bit earlier. This isn’t the worst thing in the world, but again, if you’re an intermediate and you’re not ready to spend close to over $2000 to get your entire setup functioning the way you’d like it to, it might be in your best interest to look elsewhere.

All that being said, the Apollo Twin X is still fantastic, and the UAD real-time processing is what really makes this interface so valuable.

Mobile recording 5.0

Recording on the go? No problem. The Apollo Twin X is lightweight, compact, and extremely well-built. This makes it a perfect option for any sort of mobile recordings you may be doing, but more than that, its real-time processing capabilities make it perfect for live sound applications as well.

Whether you’re a DJ looking for the best live sound possible, or an engineer trying to mix on the go, the Apollo Twin X is definitely worth your consideration here.

Build quality 5.0

The Apollo Twin X is an incredibly sturdy and well-built unit. All of its inputs and outputs have well-fitting connections, and its buttons and knobs feel great. Not much to say here other than that.

Software bundle 5.0

Upon your purchase of the Apollo Twin X, you’ll receive access to an expansive software bundle of 14 UAD plugins, all of which are all Unison-enabled.

Within this huge pack, you’ll find amazing UAD powered plugins such as UA 610-B, Marshall Plexi Classic, several Precision Mix Rack Collection plugins, and much more.

Compared to other interfaces

Now, obviously, you shouldn’t just be buying the first decent-looking audio interface you see online – these decisions should take time.

Apollo Twin X vs Focusrite Clarett+ 8Pre

I’m mentioning the Clarett+ 8Pre just to give some of you a potential option to research in case you’re looking for something with a bit more I/O capabilities straight out of the box.

The Clarett doesn’t feature any onboard processing like the Apollo, but its 18 inputs and 20 outputs make it a great option for those of you wanting to work with more intricate mic setups.

For now, I’ll just say that these two interfaces are roughly the same in quality, but it will depend on your needs in the studio.

Read the full Focusrite Clarett+ 8Pre review

Apollo Twin X vs Motu 16A

While these two interfaces are roughly the same price and are often compared to each other, they are rather different. The Motu 16A blows the Apollo straight out of the water in terms of connectivity, the Motu has 32×32 simultaneous I/O compared to the Apollo’s 10×6. However, they both offer onboard processing in real-time.

The main thing to consider here, however, is the fact that the Motu has no XLR inputs, only TRS. With this, the Motu is definitely not an interface for beginners, and professionals will probably get a lot more use out of it.

Apollo Twin X vs Apogee Element 88

Again, here’s an interface that often gets looked at side by side with the Apollo, but the two units are extremely different, and almost not worth comparing.

The Apogee sounds incredible, but won’t be very accessible for beginners considering it doesn’t have much else to offer. The Apollo is the better option seeing how versatile and user-friendly it is.

For more great options, make sure to check out my pick of the best audio interfaces for macOS and Windows users.

Who is the Universal Audio Apollo Twin X best suited for?

The Apollo Twin X audio interface is a great option for serious musicians trying to bring their recordings to the next level.

Buy UA Apollo Twin X (Quad) at: SweetwaterAmazon