Apollo x4
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Produce bigger pro sessions from your desktop, in realtime.
Apollo x4 gives engineers and producers recording larger projects the same professional analog tones heard on your favorite records with four onboard Unison™ mic preamps. With elite‑class conversion and QUAD Core UAD plug-in processing, Apollo x4 lets you record through preamps from Neve, API, Manley, SSL, and more — with near‑zero latency — giving you a fully-stocked analog studio, right on your desktop.
Experience elite-class Apollo sound — as heard on hundreds of hit records
Record your vocals and synths in realtime through classic mic preamp emulations from Neve, API, Manley, Avalon, and more
Link up to four Apollos for 156 channels of premium I/O and control it from your Apollo x4
Create with seamless hardware-software integration and analog console modeling in LUNA Recording System
Hear Every Detail in your Recordings
Apollo x4 improves upon the original Apollo Twin’s gold‑standard audio quality with completely redesigned A/D and D/A conversion — giving you increased dynamic range and ultra‑low THD. This elite‑class conversion gives you a spacious, organic sound that easily rivals dedicated high‑end converters.
Record Synths and Vocals through Iconic Preamps
With its four Unison™ preamps and dual front panel Hi‑Z instrument inputs, Apollo x4 lets you track in realtime through preamp and channel strip plug-ins from Neve, Manley, API, and dozens more, giving you the same rich analog texture as the hardware used on decades of iconic music.*
Get the Pro Sounds of Analog Hardware, Right on your Desktop
Out of the box, Apollo x4's included plug-ins give you album-ready tones in realtime with professional tools like the UA 610-B Tube Preamp & EQ, Teletronix LA‑2A tube compressor, amps from Marshall and Ampeg, and more. Plus, Apollo x4 lets you tap into the entire UAD plug-in library, giving you the proven hit-making sounds of Ocean Way Studios, Capitol Chambers, and hundreds more.
See Included Plug-Ins ›
Learn about Heritage Edition Plug‑Ins ›Enjoy a Fast, Natural Workflow with LUNA
Apollo x4 works with all major DAWs, but only LUNA Recording System gives you seamless integration with Apollo, for big analog studio sound — in realtime — using a host of built-in features and extensions from API console modeling to genuine Neve summing and integrated Studer tape.
Learn more about LUNA ›
Your New Analog Studio, Expanded
Link up to four Apollos for 156 channels of premium I/O as your studio grows — and control it all from your desktop using Apollo x4.
UAD Plug-Ins vs. Analog Hardware
Watch Grammy-award winning producer Jacquire King (Tom Waits, Kings of Leon) put UAD plug‑ins to the test in a live session featuring electronic-soul artist Jamie Lidell.
“Everyone assumes I use a lot of outboard gear, but with Apollo Twin and UAD plug-ins, I get incredible sounds on the go, anywhere.”
– Louis Bell (Post Malone, DJ Snake, Cardi B)
“My Apollos are my sound.
Where I go, they go.”
– Trevor Lawrence Jr. (Dr. Dre, Herbie Hancock, Eminem)
“I'm really impressed with the Apollo X8. I hear more detail in the several sets of monitors I use, and I'm getting that little bit extra out of the Unison mic pre emulations – and they were already extremely close.”
– Jacquire King (James Bay, Kings of Leon, Tom Waits)
“With the Apollo 8 in the studio and an Apollo Twin on the go, I know I've got the best sound quality and an incredible arsenal of plug-ins — wherever I'm working.”
– Jeremy Ruzumna (Fitz And The Tantrums)
“I knew about the ingredients of Apollo, but this is truly a special dish. The Apollo just set a new standard of excellence for audio interfaces, in terms of both its sound and its feature set.”
– Fab Dupont (Shakira, Santigold, Jennifer Lopez)
“Apollo is a platform that grows more powerful with every innovation – the UAD plug-in processing onboard has changed the way I work forever.”
– Tony Platt (AC/DC, Bob Marley, Buddy Guy)
“Using my Apollos and Console 2.0, I'm able to front a live mix, create a monitor mix, and record, all at the same time. That’s pretty awesome.”
– Chris Dugan (Green Day, Iggy Pop, U2)
“The Apollo's ability to do low latency – I mean that's the whole ballgame right there.”
– Joey Waronker (Atoms for Peace, Beck, Other Lives)
“The Apollo is the best I/O we've ever used, and we've tried them all. It has an incredibly clean, transparent, and accurate sound.”
– The Glitch Mob
“I’m totally blown away by the stunning sound quality of the Apollo. The ability to use UAD plug-ins in real-time is pure genius. It’s the centerpiece of my new studio.”
– Richard Devine
“The Apollo has some of the better preamps I've ever heard – lots of headroom, quiet at high-gains, and the converters are really sweet sounding.”
– Mick Guzauski (Daft Punk, Mariah Carey, Eric Clapton)
“The Apollo is a powerhouse and a game changer for my studio.”
– Grieves
“Having the Apollo with UAD plug-ins at my disposal is like carrying a giant studio with outboard racks at all times. Minus the tech fees, down time, and electricity bill!”
– Andrew Dawson (Jay-Z, Fun.)
“Apollo's A/D and D/A conversion sounds incredibly detailed, with great clarity and a tight, punchy low end. And with the Console 2.0 app, I have all of the routing and monitoring options I need.”
– Dave Pensado (Justin Timberlake, Beyoncé, Maroon 5)“”
Desktop 12 x 18 Thunderbolt 3 audio interface for Mac and Windows with elite A/D and D/A conversion inherited directly from the acclaimed Apollo X rackmount interfaces (backwards compatible with Thunderbolt 1 & 2 on Mac)
4 Unison mic preamps offer stunning models of classic tube and transformer-based mic preamps and guitar amps
Produce with LUNA Recording System — a fully-integrated recording application for Apollo (Mac/Thunderbolt)
UAD-2 QUAD Core Processing for tracking through vintage compressors, EQs, tape machines, mic preamps, and guitar amp plug-ins with near-zero latency, regardless of audio buffer size
Combine up to 4 Thunderbolt-equipped Apollos and 6 total UAD devices
2 Unison-enabled Hi-Z instrument inputs
2 independent headphone outputs
Built-in Talkback mic for communication with studio talent and recording slate cues
Includes monitor remote functions and Mono, Mute, DIM, and ALT monitor controls
Up to 8 channels of additional digital input and output via optical ADAT or S/PDIF
Includes the "Realtime Analog Classics Plus" UAD plug-in bundle featuring the Teletronix LA-2A, 1176, and Fairchild 670 compressors, Pultec EQs, UA 610-B Tube Preamp & EQ, and more.*
Runs UAD Powered Plug-Ins via VST, Audio Units, and AAX in all major DAWs
Uncompromising analog design, superior components, and premium build quality
Free, industry-leading technical support — on the phone and online — from knowledgeable audio engineers
Apollo x4 User Manual
For system requirements, go here.
Apollo x4 includes the “Realtime Analog Classics Plus” UAD plug-in bundle. Other UAD plug-ins sold separately at www.uaudio.com. All trademarks are property of their respective owners.Customer Reviews
F. Toncar
November 20, 2022
Tremendous quality, and very easy to use!
I enjoy my new Apollo x4 very much. The conversion (the main reason for my purchase) is great, and the compact size is incredibly useful for travel. I do wish it included MIDI I/O or an...
Read Moreg. martial
November 14, 2022
Easy life
Très facile à installer, à utiliser, le son est très bon et les plugins de très bonne qualité avec latence mini. Et surtout toutes ces possibilités rentre dans un sac à dos! Moins...
Read MoreE. Gonzalez
November 10, 2022
Songwriter’/ dream
Long time desktop apogee user. Recently, I was going to purchase a symphony desktop - my third apogee interface, when the local music store did not have them in stock, I liked the x4’s...
Read MoreA. Lepori
October 18, 2022
Best investimenti for mobile rig
This piece of kit has already became the centre piece of my workflow. Such a great sounding interface. I only wish to have had the assignable mute for the hp too. #biglove uad
Read MoreA. Dancs
October 1, 2022
The best desktop interface
I started engineering with a Focusrite Scarlett 3rd Gen 4i4. After 10 months it stopped working and the service gave me a new one. After 11 the problem came again and I bought a Clarett...
Read More -
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
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® 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® 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® 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® 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® 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® 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
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
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
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 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.
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Customer Reviews
Apollo x4
F. Toncar
Tremendous quality, and very easy to use!
I enjoy my new Apollo x4 very much. The conversion (the main reason for my purchase) is great, and the compact size is incredibly useful for travel. I do wish it included MIDI I/O or an extra pair of line inputs, but I understand why neither were included.
My only real complaint is that flex routing isn't available with this unit, and that information isn't made very clear until you're in the thick of attempting versatile routing within Console.
Not a huge deal, but something that I think shouldn't be as hidden as it is.g. martial
Easy life
Très facile à installer, à utiliser, le son est très bon et les plugins de très bonne qualité avec latence mini. Et surtout toutes ces possibilités rentre dans un sac à dos! Moins complet qu'un apollo rack mais il y a tout ceux qui est nécessaire pour travailler professionnellement. Les petites Apollo Twin peuvent manquer d'entrées sorties, la X4 c'est le compromis parfait!
Côté fiabilité, ayant une Twin depuis pas mal d'année, la confiance est totale!
Greg MartialE. Gonzalez
Songwriter’/ dream
Long time desktop apogee user. Recently, I was going to purchase a symphony desktop - my third apogee interface, when the local music store did not have them in stock, I liked the x4’s form factor, I liked that it has more preamps, two headphone outs vs. 1, two hi-z inputs vs. 1 and I also liked the idea of using thunderbolt and loading plugins directly into the interface so you can record wet. Since my purchase I have started collecting plugins and using Luna. I am really enjoying my first UA experience after 20 years of home recording and songwriting - not looking back.
A. Lepori
Best investimenti for mobile rig
This piece of kit has already became the centre piece of my workflow. Such a great sounding interface. I only wish to have had the assignable mute for the hp too. #biglove uad
D. Brown
X4
Nice unit
M. Sai
Disappointing experience
After purchase I found out that the Neve plug-ins weren’t included in the bundle. No worries, I was given a coupon for $50 off of plugins and an offer to get $25 off if I did the survey. The $25 off coupon never arrived and then the $50 coupon didn’t work. After spending $1500 I don’t have the one plug-in I wanted. Customer service’s response was essentially, tough sh*t.
A. Dancs
The best desktop interface
I started engineering with a Focusrite Scarlett 3rd Gen 4i4. After 10 months it stopped working and the service gave me a new one. After 11 the problem came again and I bought a Clarett 4Pre USB. I thought it will be a huge improvement in quality but after 10 months the problem came again. I sold it and bought an X4. The sound quality is way better than even the Apogee Symphony Desktop’s. The plug-ins are as good as the analog versions. I love the Fairchild’s and the LA-2’s sound. Thank you Universal Audio for making interfaces and plug-ins like that.
s. ownby
Apollo x4
I'm new to the Apollo world. It has far exceeded my expectations. The sound quality is far superior to what I was using previously.
M. Park
I like it
It has a high price but I like it
R. Williams
The Apollo x4, I Like wasting my money!
I obviousely like wasting my money on gear...From the moment I hooked up the Apollo x4 I realized that I had spent years on A/D converters that to be honest, can't compete. The unit is somewhat more expensive than the competition but exponentially more capable. If you don't like high fidelity, low latency and a slew of excellent and accurate plug-ins...don't buy this unit. Instead, waste years of your recording life cutting corners on the other stuff. Peace out!!! Im about to power on
J. Moin
Amazing unit overal but..
I absolutely love this unit and my decision to hop on the UA bandwagon. I am a producer and bass player. I have used many of the bass amps offered here and once I heard them used in the unison slot the difference was about 1% between the real thing and plugin! That's incredible. So i knew UA was the real deal. I have purchased so many plugins now but having issues with DSP load. You will quickly use up 4 dsps. I have to keep freezing tracks in cubase (render and disable) tracks to get the most out of my plugins. Hope when spark is offered for windows that it will help with this situation. I may also consider getting an octo satellite. I also don't like that the signal flow menu is reserved for the racks and not the tabletop units, they still cost thousands so come on UA. Overall amazing unit, you will not be disappointed!
R. Chandler
Apollo Excellence
Still watching video’s and getting familiar with my Apollo x4 and Luna, but I’m loving it! See the potential and it will make the creative juices flow!
I. Sedick
Premium Sound
I've tried the rest, there is no competition. The x4 is literally the best in it's class. What else could I possibly say?
UAD User
Best HUGE small studio/portable interface yet!
I recently switched from Apogee and I'm super impressed. So far, I've been able to increase my home studio workflow massively and have plenty of options for IO. From songwriting to mixing and even live podcasts, this thing can do it all. It has been a great investment and worth every penny.
R. Gilligan
A perfect companion for my Townsend Sphere and Luna.
I've been wanting to upgrade from my old Twin MKii for a while and the move to using a Townsend Sphere provided the reason I'd been waiting for. Being able to keep Console set up for vocal work AS WELL as bass and guitar (With plenty of DSP left over for Reverb and Delay, means that I don't need to spend any time launching a DAW to be able to write, practice, or work on ideas. Then once I have something worth recording, the Luna integration is second to none. (My Apollo Twin MKii now travels with me in my bag to enable Luna sessions when I'm not at my desk, and the move to the native plugins means that the DSP in the Twin can handle the heavy lifting, (I'm looking at you Capitol Chambers), and I run Native for most everything else.
A. Gray
Amazing preamps, just wish processors were faster
I am in love with the Unison preamps and high quality hardware emulation plugins. I only wish that the on board processors were faster during export! A project running only native plugins on my machine can bounce at 40x speed, but as soon as I add UAD plugins it drops down to 1.5-6x speed. That drop can really build up when working on giant projects (eg. exporting stems for film). Everything else about the interface and associated softwares is top of the line.
A. deleris
la mejor interfaz de escritorio....!!!
La maravillosa interfaz Apollo x4 con su cuatro preamplificadores de micrófono habilitados para Unison me brinda amplias posibilidades a mis producciones . Es como tener un estudio analógico en mi escritorio ...!!!
m. bertin
small but hi quality still
I work like a duo in a cruise ship company and this is the best solution of all my problems Exellent Quality Lite (i always fly) simply the best and the support? Amazing they resolve all your problems very quick i am very happy
J. Berdkan
A powerhouse recording interface in a 6"x9" package!
An easy to use and understand interface, with every feature you could want or need, coupled with world-class sound quality - all in something the size of a typical paperback! I couldn't be happier with recording gear purchase!
A. Sherstnev
The perfect solution for a compact studio
I recently bought an Apollo x4 and am completely satisfied with it, the supplied plugins like LN1176 and La2A are much better than their wave counterparts. This card is the best solution that fits most studios with a margin. My m40x headphones with this card sound much louder than in budget cards and even louder than in special hi-fi amplifiers. The volume margin is very good.
I recommend!
