Apollo x16

Apollo x16

  • Overview
  • Included Plug-Ins
  • Features
  • Customer Reviews
  • 4.8/5
    (26 reviews)
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(26 reviews)
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16 Channels of Elite Audio Conversion, HEXA Core Processing, and Surround Sound Monitoring.

The flagship Apollo x16 allows music producers, project, and post-production studios to track, overdub, and mix with new world-beating A/D and D/A conversion, HEXA Core UAD plug-in processing, Dual-Crystal clocking, and 7.1 surround sound monitoring — all in a sleek rackmount Thunderbolt 3 audio interface for Mac or PC.

Built upon UA’s 60-year heritage of audio craftsmanship, this 18 x 20 interface boasts the widest dynamic range (133 dB) and lowest THD+N (-129 dB), of any integrated audio interface on the market. Plus, with all-new HEXA Core processing, you’ll get 50% more DSP for running acclaimed UAD Powered Plug-Ins in real time.

Record with UA’s flagship A/D and D/A conversion — providing the widest dynamic range and lowest noise available, at any price

Mix with powerful HEXA Core processing, featuring 6 UAD DSP chips for running more UAD Powered Plug-Ins in real time

Easily connect to professional studio gear with 16 x 16 analog I/O via DB-25 connections, plus switchable +24 dBu headroom settings

Integrate with high-end commercial systems, via 7.1 surround sound monitoring with speaker calibration and fold‑down

UA’s Flagship A/D and D/A Conversion

With thousands of chart-topping songs and hundreds of Grammy-winning albums under their belt, Apollo interfaces are no strangers to tracking stellar-sounding records. To improve on the previous generation Apollo interface’s class-leading audio conversion, UA engineers obsessively auditioned the latest A/D and D/A converters — ultimately pairing elite-class 24-bit/192 kHz converters with all-new analog circuitry for an ultra-pristine signal path.

The Apollo X series also introduces new Dual-Crystal clocking — featuring dedicated crystals for 44.1/88.2/176.4k and 48/96/192k sample rates — resulting in stunningly low jitter, measured at less than 10 picoseconds. This translates into pure, artifact-free recordings and solid stereo imaging you can trust.

With 133 dB dynamic range and THD+N of -129 dB, the Apollo x16’s open, natural sound quality bests every interface in its class — regardless of price — and is the perfect starting point for applying UAD processing.

Realtime UAD HEXA Core Processing

Apollo x16 features new HEXA Core processing, with six DSP chips and 50% more UAD plug-in processing power than previous Apollos. This lets you run more UAD plug-ins, whether you’re tracking in real time with channel strips from Neve, Manley, or API, or running high UAD plug-in counts when mixing in your DAW.

From the tube warmth of Pultec EQs on guitars to the musical tube limiting of the LA-2A on vocals, or the pump of a genuine 1176 or Fairchild 670 tube compressor on drums, your recordings will take a giant leap forward with a rich, three-dimensional analog sound that UAD plug‑ins provide.

A Full Suite of Classic Analog Processing Onboard

A Full Suite of Classic Analog Processing Onboard

Of course, a hallmark feature of Apollo is its Realtime UAD Processing, letting you run the full library of UAD plug-ins with near-zero latency. Apollo x16 includes the Realtime Analog Classics Plus plug-in bundle, so you can record and mix with the world’s only authentic Teletronix LA-2A, 1176LN, and Fairchild compressors, Pultec EQs, and many more.

See Included Plug-Ins   |   Watch the live tracking video

Access the World of UAD Powered Plug-Ins

Going beyond the included Realtime Analog Classics Plus plug-ins, Apollo x16 lets you tap into the full UAD Powered Plug-In library of legendary vintage EQs, compressors, reverbs, tape machines, channel strips, and more — at near-zero latency, regardless of your audio software’s buffer size and without taxing your computer’s CPU.

With exclusive emulations from SSL, Neve, Studer, Manley, Helios, API, Ampex, Lexicon, Fender, and more, it’s like having a studio full of iconic analog gear, in a single rack space. And unlike competing interfaces, these award-winning DSP-powered plug-ins are also available in your DAW for mixing.

†Apollo x16 includes the “Realtime Analog Classics Plus” UAD plug-in bundle. Other UAD plug-ins sold separately at www.uaudio.com.
Surround Sound, Talkback, and More

Surround Sound, Talkback, and More

The Apollo x16 features built-in front-panel monitoring functions including a Talkback mic, Alt Speakers, and assignable Dim or Mono control. Plus, with its comprehensive 7.1 surround monitoring support, Apollo x16 is a boon for engineers and producers working on audio and music for video games, television, and the web. In addition, Apollo x16 offers selectable +24 dBu operation for out-of-the-box compatibility with professional mixing consoles and other high-end pro audio equipment.

Build an Expanded Studio System Over Thunderbolt

Build an Expanded Studio System Over Thunderbolt

Apollo x16 offers 18 x 20 simultaneous inputs/outputs (16 x 16 analog I/O) and two built-in Thunderbolt 3 ports. This allows users of any Thunderbolt-equipped Apollo Twin or Apollo rackmount audio interfaces to easily combine up to four Apollos and six total UAD-2 devices — adding fast, high-bandwidth I/O and DSP as your studio grows.

Apollo X Tech Talk
Apollo X Tech Talk

Apollo X Tech Talk

Universal Audio’s Senior Product Manager, Gannon Kashiwa dives deep into the key features, specs, and development behind the latest generation of Apollo audio interfaces.

Apollo: The Choice of New-School Professionals

Apollo is the confirmed choice of hit-making professionals, used to record landmark albums by Kendrick Lamar (DAMN.), Chris Stapleton (From A Room: Volume 1), Arcade Fire (Everything Now), Post Malone (Beerbongs & Bentleys), and many more. The Apollo range of interfaces has earned numerous industry awards from Sound on Sound, Future Music, and Electronic Musician — as well as the prestigious 2016 TEC Award for computer audio hardware.

Apollo Artist Sessions
Apollo Artist Sessions

Apollo Artist Sessions

Watch producer/engineer Fab Dupont (Jennifer Lopez, David Crosby) record Latin superstars Monsieur Periné live in Colombia with Apollo X audio interfaces.

View All Apollo Artist Sessions

Realtime Analog Classics Plus Bundle

With the Realtime Analog Classics Plus plug-in bundle, you not only get legendary compressors such as the Fairchild® 670 and EQs like the Pultec® EQP-1A, but also stunning guitar and bass amp emulations from Softube, and UA’s landmark 610-B Tube Preamp and EQ plug-in.

  • UA 610‐B
  • Marshall Plexi Classic Amplifier
  • Fairchild 670 Legacy
  • Teletronix LA‐2A Legacy
  • UA 1176LN Legacy
  • UA 1176SE Legacy
  • Pultec EQP‐1A Legacy
  • Pultec Pro Legacy
  • Ampeg® SVT-VR Classic Bass Amp
  • Precision Channel Strip
  • Precision Reflection Engine
  • Precision Delay Modulation
  • Precision Delay Modulation L
  • UA Precision Enhancer Hz
  • Raw Distortion
  • RealVerb‐Pro

UA 610-B Tube Preamp and EQ

UA 610-B Tube Preamp and EQ

Impart your tracks with the iconic warmth and character of the classic hardware used to track everyone from Duke Ellington to Coldplay. By emulating the entire signal path, including tube amplifiers, transformers, and circuit nonlinearities, the 610-B Tube Preamp and EQ plug-in injects organic detail and saturation to any signal — whether you’re re-amping or tracking through the 610-B via Universal Audio’s Unison™ technology.

Marshall<sup>®</sup> Plexi Classic Amplifier

Marshall® Plexi Classic Amplifier

The undisputed alpha dog of rock and roll guitar amps, the Marshall “plexi” amplifier is as legendary as the music it helped create. From Jimi Hendrix to Jimmy Page, Duane Allman to Eric Clapton, the Plexi’s punishing melange of snarl, sustain, smoothness, and raunch defined the sound of rock. Developed by Softube, the Marshall Plexi Classic Amp plug-in gives you the sound of this iconic amp with a perfectly placed microphone from engineer Tony Platt who recorded AC/DC’s Back in Black and Highway to Hell.

Fairchild<sup>®</sup> 670 (Legacy)

Fairchild® 670 (Legacy)

The world’s most coveted compressor, the classic Fairchild 670 tube limiter will give your tracks and mixes unmistakable tube warmth and character. Whether you’re looking for subtle compression on a lead vocal, or grittier textures that can work on guitars, bass, or a drum bus, the Fairchild 670 plug-in adds a classic “glow” to anything you run through it.

Teletronix<sup>®</sup> LA-2A Classic Leveling Amplifier (Legacy)

Teletronix® LA-2A Classic Leveling Amplifier (Legacy)

With its gentle, program dependent optical compression and meticulously designed tube amplifier, the LA-2A is the go-to compressor for professional mixers around the world — especially for vocals. Incredibly easy-to-use Peak Reduction and Gain controls gives you the ideal optical compression sound for guitar, bass, drums, and more.

1176SE/LN<sup>®</sup> Classic Limiting Amplifiers (Legacy)

1176SE/LN® Classic Limiting Amplifiers (Legacy)

Get classic, ultra-fast FET compression from the world’s most recognized compressor. The 1176 will impart punch, presence, and character as well as its signature distortion overtones on drums, vocals, guitars, and bass. The 1176LN has graced countless recordings, from Led Zeppelin, to the White Stripes and Michael Jackson.

Pultec<sup>®</sup> Pro Equalizers (Legacy)

Pultec® Pro Equalizers (Legacy)

Mix with two of the most sought-after hardware EQs ever made — the MEQ-5 Midrange Equalizer and the EQP-1A Program Equalizer. Both of these tube-based icons deliver smooth and silky EQ curves with an abundance of warm analog character.

Ampeg<sup>®</sup> SVT-VR Classic Bass Amp

Ampeg® SVT-VR Classic Bass Amp

Introduced in 1969, the Ampeg SVT bass amp is still the reigning king of high-powered tube bass tone. Developed by Brainworx, the Ampeg SVT-VR Classic Bass Amp plug-in perfectly captures the raw power and punch that has made this the go-to amp for rock, funk, and soul players. Track in real time using Unison™ preamp technology for the tone, touch, and feel of a real SVT bass amp, or transform bland DI tracks with the thunderous roar of a stone cold classic.

Precision Mix Rack Collection

Precision Mix Rack Collection

Featuring the Precision Channel Strip, Precision Reflection Engine, and Precision Delay Modulation plug-ins, the Precision Mix Rack Collection offers four modern, high-fidelity plug-ins for recording and mixing. Powerful and intuitive, Precision Mix Rack Collection gives you an impressive tool set — perfect for beginners and seasoned professionals alike.

UA Precision Enhancer Hz

UA Precision Enhancer Hz

Expertly dial-in your music’s low-end frequencies with the Precision Enhancer Hz plug-in. Able to yield exacting results with minimal adjustment, the Precision Enhancer Hz can add weight to kick drum samples, fatten up a synth bass, or simply make the low-end of your tracks more audible on smaller speakers.

Raw Distortion

Raw Distortion

Modeled from a vintage early-’80s Pro Co Rat, Raw Distortion delivers all the gritty dynamic raunch of the legendary stompbox. And with Unison™ technology, you can plug in to Apollo Twin, 8, or 8p’s front-panel Hi-Z instrument jack and experience the same circuit interaction, gain range, and clip points for the true tone, feel, and response of the original hardware.

RealVerb Pro

RealVerb Pro

RealVerb Pro is a flexible, natural sounding reverb based on UA’s own unique set of algorithms. Allowing you to design the room just as you hear it, the RealVerb Pro goes beyond simply big/small or dark/bright, giving your sources distortion-free, smoothing diffusion control and ultra-long reverb tail.

Apollo x16 Features & Specs

  • 18 x 20 Thunderbolt 3 audio interface with class-leading 24-bit/192 KHz conversion (backwards compatible with Thunderbolt 1 & 2 on Mac)

  • HEXA Core Realtime UAD Processing for tracking through UAD plug-ins at near-zero latency, regardless of audio buffer size

  • Surround monitor controller up to 7.1 format

  • Includes the "Realtime Analog Classics Plus" UAD plug-in bundle. Other UAD plug-ins sold separately.

  • UAD-2 HEXA Core processing onboard for additional mixing horsepower for Pro Tools, Logic, Cubase, Ableton, and other major DAWs

  • Combine up to 4 Thunderbolt-equipped Apollos and 6 total UAD devices

  • Selectable +24 dBu operation for easy compatibility with professional mixing consoles and tape machines

  • Convenient front panel monitoring functions including Alt Speakers, Talkback mic, and assignable Dim or Mono

  • Uncompromising UA analog design, superior components, and premium build quality

  • Free, industry-leading technical support — on the phone and online — from knowledgeable audio engineers

Interface Specifications

Line Inputs (DB25) 16 Balanced via (2) 25-pin D-sub
Digital Inputs (XLR) AES/EBU: 2 channels @ 44.1 – 192 kHz
A to D Conversion
Line Inputs Dynamic Range: 124 dB (A-weighted)
THD+N: -115 dB (0.00018%)
Frequency Response: 20 Hz – 20 kHz, ±0.05 dB
Line Outputs (DB25) 16 Balanced via (2) 25-pin D-sub
Monitor Outputs (XLR) 2 Balanced (Left/Right)
Digital Outputs (XLR) AES/EBU: 2 channels @ 44.1 – 192 kHz
D to A Conversion
Line Outputs Dynamic Range: 127 dB (A-weighted)
THD+N: -123 dB (0.00007%)
Frequency Response: 20 Hz – 20 kHz, ±0.02 dB
Monitor Outputs Dynamic Range: 133 dB
THD+N: -129 dB (0.00004%)
Frequency Response: 20 Hz – 20 kHz, ±0.02 dB

Apollo X Series System Requirements


  • Thunderbolt 3 cable (not included)
  • Internet connection to download software and authorize UAD plug-ins
  • 6 gigabytes available storage
  • Quad Core i7 or better processor recommended
  • For additional compatibility information, visit help.uaudio.com


  • Available Thunderbolt 1, 2, or 3 port
  • Thunderbolt 1 and 2 connections require an Apple Thunderbolt 3 to Thunderbolt 2 Adapter (not included)
  • macOS 10.12 Sierra, 10.13 High Sierra, or 10.14 Mojave


  • Available Thunderbolt 3 port
  • Windows 10 (64-Bit Edition)

Customer Reviews

Apollo x16

Overall Rating

(26 reviews)

J. Poole

July 29, 2019

Put through the paces

After having an X16 for a few months I cannot find any weaknesses in the platform. The only thing that could be an improvement is allowing the user to add effects on the monitor output channel like the Soundgrid platform, that way I can add a compressor and normalize the playback of a movie when the dialog is too quiet and the sound effects are too loud. That's not a complaint, but it would be nice...

B. Harvey

July 21, 2019


After a few weeks of some issues, I finally got the Apollo x16 and x8p working well together. A few times I sat on hold with UAD tech support for over an hour waiting for someone to answer the phone (once it was 2 hours on hold after calling just 5 minutes after they opened their support). They must be busy fixing a lot of issues or very short handed. Their turn around on public forums is near nothing where their customers have posted questions and listed issues with no responses. Their staff si nice and friendly, when you get them, but be prepared to wait on hold a long LONG time.

As for the gear, I have the Apollo x16 and x8p. I also bought EVERY plugin they have. All of them - which according to my account is over 162 plug-ins.

The signal passes well and the sound is good for sure. I had upgraded from a Focusrtie Clarett expecting this to be outstanding in comparison, but it's really only a slight negligible improvement in sound. However, the Focusrite software is far FAR superior for routing IMHO, which is a huge surprise given all the hype around UAD Console. But after some research, I found many others offering similar reviews in comparison. Yes you get lots of outputs in the x16 and x8p combined, but the software ties your hands on how well you can configure it with only 4 cues to route multi signal paths too. Also, the ALT monitoring, only sends through one at a time. For some this might be fine, for, I found it useless. I wish I could us the Focusrtite software over Console. Focusrtie isn't fancy, but the routing is a breeze and very flexible. I spent a few days learning the Console, and finally accepted that it is just limited in comparison. Check the reviews, look deep and you'll find the same comments from many others.

The UAD plugins are okay. But to be honest, I don't think they are really that spectacular. I have about 3,000+ plugins from many vendors. The UAD holds their own fine, but they are NOT much better then many others I have. Many I doubt I would ever use. And they are very expensive. Be prepared to spend a lot of money if you want them all.

I spent more than $15,000 on this system and wish I never looked at it. I wish I never even knew about it. Huge regrets. Save youresefl the money and hasle and check out the Focusrite Clarett, save a LOT of money, get better routing and just as good latency. (yes the Clarett shows thee same latency with USB and I see with TB3). And seriously, the pre-amps on the Clarett are not as good, but they are very close in the ballpark, You'd be surprised.

My comments here are very similar to many others I have found, but I think UAD and other suppress (Sweetwater included) these types of reviews. As an experiment, I am going to pose this on other sites as well, including UAD. You check and see if it posts.

Oh man, I so wish I never bought this. Don't get me wrong, it is decent for sure, and the preamps are really good. No doubt. But it is definitely not worth the extra aggravation and loss of flexible routing ease at a huge price tag. Not even close to worth it.

- great pre-amps. Unsion is great. Even the basic line ins on the x16 are really good. This is the best feature of the system.
- Console app can handle some plugins and offer near zero latency (it is NOT zero). So, tracking is nice and that part is flexible
- the hardware seems solid.
- the staff is friendly

- Expensive plugins - but only marginally average performance over others that cost much less
- Horrible routing options. I mean horrible when you consider the hardware's capability and what Console does not allow you to do! Makes me wonder why even have the expensive outputs when they are so limited. This is my biggest gripe at this point. I needed to put my x32 back in action to do what it can't. grr!
- their support is friendly, but you may need to take vacation day to a hold of them!

L. Powell

July 14, 2019

Thing is excellent

Solid converter, bought it to replace an Apogee Symphony that had an unbearable amount of fan noise. Sounds just as great, takes up 1RU (though you need to leave a space above for air flow) and the DSP on board is handy too. The converter quality is pretty much up there with anything pro level these days (Apogee, Avid etc).

w. shenck

July 6, 2019

Awesome x16.

Once you learn the unit, it's truly amazing. Quality product. If it's in your budget get it. Linkable for plenty of i/o.

R. Tiburcio

June 25, 2019

The hart of my studio

This is just amazing , those monitors out are just the best !!


June 22, 2019

Finally have the outs I need!

This is a great addition to my UA lineup of interfaces: Apollo x16, Apollo 8p, Satellite quad duo, 4710d, Apollo Twin duo. I finally have enough outs to send my mix busses to the summing mixer for mixdown! Not to mention the awesome flexibility of having multiple Cue Mixes to send to the band.
I have only tracked a few sessions of drums and guitar, bass but am pleased w the outcome, clean highs more detail from the mids and lows and plenty of headroom! Makes tracking a breeze! I am a Committed UA Fan and user! Thank you!

V. Manoukian

June 7, 2019

A Natural Solid Sound

I just purchased two X16s and I am very happy. I moved to the Windows platform last year and my previous interface was an Apogee Symphony. The Apollo X16 makes me just as happy on the Windows platform.

A. Nwankoti

May 27, 2019

Depth and Clarity...Horse Power!!!

This is a great innovation and the dsp gives my cpu freedom to breath, I am running on a 2013 imac was about to upgrade but now I do not need to!! I used an orion 32(which is a great converter) and played back those mixes through the Apollo x16...I realized that I over compensated on the low end and less detail on stereo image. In essence this card will reveal the depth and spaces of your project, tweaking sounds and shaping the dynamics is now fun and quicker!! You have to use great studio monitors like Amphions or Unity Rocks or any precise high end monitors, to hear the detail that this card projects.
Thanks for the Vouchers and legacy plus classic collection bundle!! They sound Amazing and the crafting is an engineers dream! I love the X16! DOPE! DOPE! DOPE!!!!!!!!!!!!!!!!!!!!!!!

J. van de Ven

April 19, 2019


Love the new converters, clock and extra DSP!

w. wang

March 23, 2019


目前使用一切满意,希望将来能支持 Pro Tools HD接口!

D. Spatharakis

March 19, 2019

Astra Studio Chicago

Very impressive conversion on the new Apolo X this is my this third interface from UAD.
Thank you for a quality product!!!!

D. Spatharakis

March 19, 2019

Astra Studio Chicago

Very impressive conversion on the new Apolo X this is my this third interface from UAD.
Thank you for a quality product!!!!

D. Spatharakis

March 19, 2019

Astra Studio Chicago

Very impressive conversion on the new Apolo X this is my this third interface from UAD.
Thank you for a quality product!!!!

D. Spatharakis

March 19, 2019

Astra Studio Chicago

Very impressive conversion on the new Apolo X this is my this third interface from UAD.
Thank you for a quality product!!!!

D. Formula

February 12, 2019

Audio Excellence

From the first moment of hearing the quality and fidelity of the first audio signal coming through the Apollo A to D converters - I was a convert.
From the time of opening Strongroom Studios in London UK, in 1984, through to me installing the UA in my newly expanded Sweet Factory, this is the best sounding audio I’ve heard.
Don’t start me on the plugins as well!

J. Babb

February 8, 2019

Took my system to the next level

I got the apollo X16 because i needed more I/O. My next studio purchase would've been the black 16 to add with my pair of black 8's. When the X16 was released I figured it couldn't hurt to spend the extra money and get the next new thing because it had a few more nice features. The first day I added X16 to my system of two blackface 8's I had to check the clocking several times back and forth because clocking my existing Apollo system with the X16 added an impressive amount of depth and clarity to my sounds. I thought a clock wasn't supposed to do that. Just the improved clocking made a valuable difference. After wiring the majority of my outboard preamps to the inputs of the X16, tracking a band was noticeably better sounding to my girlfriend. My entire studio has been upgraded and i must admit the improvements are no joke. The X16 is what they say it is-Elite class conversion-and I like it .

R. Clark

February 6, 2019

Apollo X16

The Apollo X16 was an upgrade for me and It was worth every penny. The best Apollo made. Love the clock in it and the clarity this unit brings.

T. Ensemble

January 9, 2019

Apollo x16

Super device !!! Very glad I bought !!!

P. Conrad

December 18, 2018

A dream come true

This gear is for recording professionals. It forces you to focus on getting the best sounds into your gear by offering you not just 16 line level in/out but additional AES digital in... i use it with UA Twinfinity Preamps and a Neve 8816 summer and the results are phenomenal.

A. Overington

November 9, 2018

Really surprised! Sounds like the interface I've dreamed of...

I'm pretty used to there being two varieties of converter/interfaces - the ones that sound good VS the ones that function well. With this piece, the worlds have finally combined! Top of line UX matched with prestine-quality audio? Love it.