Apollo x16

Apollo x16

  • Overview
  • Included Plug-Ins
  • Features
  • Customer Reviews
  • 4.7/5
    (52 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 elite-class 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 Windows.

Built upon UA’s 60-year heritage of audio craftsmanship, this 18 x 20 interface delivers the widest dynamic range (133 dB) and lowest THD+N (-129 dB) of any integrated audio interface on the market, all-new HEXA Core processing — yielding 50% more DSP for running acclaimed UAD Powered Plug-Ins in real time — plus it includes LUNA Recording System, giving you a fully-integrated music production application.

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

Includes LUNA Recording System — a fully-integrated and inspiring music production application

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.
LUNA Recording System<br />Deep Apollo Integration with a Fast, Natural Workflow

LUNA Recording System
Deep Apollo Integration with a Fast, Natural Workflow

Apollo X series interfaces work with all major DAWs. But they become a fully integrated recording system with LUNA, Universal Audio’s groundbreaking music production application for Mac. Harness LUNA’s Accelerated Realtime Monitoring™ and power your workflow with a host of built-in features and optional extensions — from genuine Neve summing and integrated Studer tape, to inspiring LUNA instruments, and more.

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 TEC Award for computer audio hardware five years running.

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

  • Produce with LUNA Recording System — a fully-integrated recording application made for Apollo (Mac/Thunderbolt)

  • 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, 10.14 Mojave, or 10.15 Catalina


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

Customer Reviews

Apollo x16

Overall Rating

(52 reviews)

B. Tyler

September 3, 2020

Does NOT Have 16 Out (Without Workaround)

I see another review saying this, and I've seen other people talking about it but seriously: What in god's name is the point of limiting the "flex routing" to 8 out channels? Why would anyone buy a 16x16 piece of gear... that can't use all 16 outputs without some weird workaround using the Cue busses? UAD's explanation is "latency" but that makes no sense considering you CAN assign the last 8 outputs with that workaround (and we're getting no latency doing so).

At least it works and we didn't waste time and money for nothing and the workaround exists, but this is some seriously false advertising. You should be able to freely route to all the channels if you need to do so from the Console, and if not there be a humongous asterisk up on this marketing material about this limitation, not something buried on page 92 of the manual.

J. North

July 9, 2020

A Great Step Up

Definite increase in converter quality since MKII model. Great being able to run at +24 as I can drive my preamps harder before clipping. Fantastic to have 50% more DSP.

Chains perfectly with x8p and x4 for a fully fledged system.

Flagship unit of the industry leader - you cannot go wrong.

D. Warren

July 8, 2020

apollo 16

its a must have for tracking or if u choose to use analog gear with it. It was a lil confusing at first to set up the I/O but once i got it figured out it was a dream... the sound, conversion and clarity is top notch!

E. Munda

June 30, 2020

Routing problems

I purchased the Apollo X16. It has excellent preamps, which is why I put 3 stars.
The negative is the routing section related to the X16 console. It does not allow monitoring of 16 inputs on 16 separate outputs, but a maximum of 16 inputs on 9 outputs. The problem can be solved a bit by using the "CUE", but it is not a normal thing for a 3500 euro card. Big disappointment.

To improve the DSP management with different plugins, since for example if you want to insert only one "Neve 1073" for each channel, the dsp is not enough to cover the 16 channels of the card.

d. li

June 15, 2020

apollo x16 music good

Great audio solution

j. Zona

May 31, 2020

Apollo 16 x

So far so good,using it with my api 3208,which means i will be looking forward to adding another one in the near future,great job with luna.

R. Gulian

May 20, 2020

Playback - Mixing in Hardware - All the Good Pro stuff!

Yes, this is the real deal - the move up from project studio to studio studio. Expect to spend another $600 on cables but the DA converters are worth it. And now routing in Pro Tools is a cinch with all these channels to use in stereo or mono.
I have chained my existing x8 to it and it was fairly easy to setup in Console (start with SingleProToolsX16 preset and then add the 8x and save as a new preset. I choose the x16 as the monitor device and I'm not sure why anyone would choose different since the DA converters are supposed to be better in the x16
I have not been completely impressed with UAD plugins or the Unison preamps. Don't get me wrong, they are both quite good. However even my least expensive hardware preamp is better and not only are there native plugins that are as good but at least FabFilter is less of a drain on the CPU despite the hexa chipset.
That said, I bought the x16 for it's superior converters and work flow. I don't think there is a better hardware user interface available and the converters have not disappointed. I have started experimenting with Luna and the sound quality is impressive, this is where the UAD plugins, especially the tape ones, really start to shine. Can't use it, of course, until it gets hardware inserts but I'm excited about the prospect.
At a certain point in my studio development I came to a point where I thought I had to decide "Great interface or summing mixer". With the x16 and mixing through hardware, I have both. After reading other reviews here, I'd say get a Mac if you want to use this without problems.


April 18, 2020


I don't need words
I can check the sound all parts in Music

p. hedin

April 14, 2020

Apollo x16 made my day

I have a apollo 16 but i needed to get 32ch running so i could hook it up to my Neve Genesys Black console. I had no idea how good the x16 were before i put some sounds through the system and wow, it really sounds awesome. Clear, punchy and detailed. Just what i needed. Great juob guys!

e. peterson

April 13, 2020

Apollo x16

Theres only one thing I can say about the x16. Fabulous!!!

A. Gilligan

April 11, 2020

Sheer class!

Ive been using my Apollo X16 for six months now and its easily the best Converter for the money. It's a serious heavy weight. Ignore other dodgy companies like Antelope; there are good reasons why 99% of the ProAudio dealerships wont deal with them . Congrats UA, the X16 is world class!!

A. Lakkis

February 26, 2020

Apollo X16

This is definitely an excellent upgrade from my previous silver face apollo. The convertors are excellent and I can hear the difference, more low end punch, more detailed hi end. I ended up buying 2 X16's running my analog hybrid setup. Cant go wrong here

B. Kasprzyk

February 21, 2020

Sounds decent, but overall, very disappointing experience. Wouldn't buy again.

I'll give it 1 star rather than zero. The converter sounds great, but UAD promises it works for Windows. It doesn't, at least night right away. It wouldn't recognize, and Josh Y told me "go find a Mac and update the firmware". Really?!! For $3000, and that's the answer I get? Pathetic. This was after I fought with him for 2 months because my first unit was defective (wouldn't work at 96K), and I just couldn't seem to convince him. I sometimes had to wait 6 days for an email response, and their phone tech support hours are useless. You have to take a day off from work to call them. Then, he would just ignore questions he didn't like. I would have never bought this if I knew the hassle I'd get. Not recommended.

Z. Riles

February 20, 2020

X16 with analog console

Love it. Switching from hdx & lynx aurora’s. More clarity and headroom from what I can tell. I’m using an analog console’s aux sends fore cue mix and Apollo’s software console for control room input monitor mix and it’s 4 cue sends for additional fx sends. I can now punch in a full band using’s PT’s “low latency” mode with no input doubling or creating separate overdub tracks. Woohoo! Interested to see how “Luna” integrates with an analog console.

K. Uchikado

January 4, 2020


Really great one.

R. Myers

December 31, 2019


i can not get console to multi track 16 channels in and out to my c24 appolo x 16 db25 will not track to protools on correct channel must be the io in console default seems right but protools is adding adats and virtual tracks confusing me i have tried multiple configurations in both only way to get it is to assign track inpus to aux L/R INPUTS IN PROTOOLS on that track but that will not multitrack 8 mics on drums 5 on mic live like my HDX system did with ease is appolo console limited here for commercial studio use got tired of plugin lag thought this was answer

J. Poole

December 29, 2019

Racer X

I use a high end power conditioner and the unit is very quiet. I love using external hardware as plug ins and on the 2 buss. Add this to UAD plugins and you have a winner...

R. Myers

December 22, 2019

UAD Appolo 8 and 16

I had the avid hdx system with native card and c24 controller,installed 2 appolo UAD units thunderbolt i am having trouble printing the console effects to track and do run out of dsp fast,avid hdx has much more dsp and can use many more plugins but cant record with plugins it will bypass or lag with low latency turned on,appolo is superior due to avids lazy here,still wait on my free satellite slow getting it,these plugins need to drop there price down to be more affordable for there users,i do get a little more headroom that give a analog sound i love that but customer service has been hard to come by at universal audio cant get a person on the phone to help at all it bad,product is great most plugins sound good but not all select ones but in all i made the right decision but pricy to switch but would do it again,great product overall but the console needs more easy routing developed more simple to inputs outputs and aux thats the printing problem i am trying to work through missig something but i will find it great product would love to see io more simple also 4 stars ........


December 12, 2019


I'm a Blessed owner of the following hardware from Universal Audio: Apollo DUO Thunderbolt, UAD-2 SATELLITE OCTO, Apollo X4, and finally 2 X16 units. Unique Top Notch Hardware I've been dreaming for years finally come true into our Swiss Vintage Studio!

As previously expressed: Blessed!!!

A. Cataldo

December 6, 2019

From black to X series

I updated my Apollo system from black to X seires. I've always been happy with apollo. Configurations, routing, connections, uad cores ... but above all today I have to enjoy the new converters on board! I love them. upgrade fully successful with so much satisfaction!