Elite Audio Conversion and Four Unison Preamps, All on your Desktop.
Apollo x4 allows musicians and producers to easily track, overdub, and mix larger projects with elite-class A/D and D/A conversion, four Unison-enabled preamps, and QUAD Core realtime UAD plug-in processing — all in a desktop Thunderbolt 3 audio interface for Mac and Windows.
Built upon UA’s 60-year heritage of audio craftsmanship, Apollo x4 confidently outperforms everything in its class with 127 dB D/A dynamic range, along with an included bundle of UAD analog emulation plug-ins and LUNA Recording System, giving you a fully-stocked analog studio, right on your desktop.
Record and mix with elite-class A/D and D/A conversion — with the widest dynamic range and lowest noise of any desktop interface
Four Unison-enabled preamps — track larger projects with near-zero latency through preamp emulations from Helios,® Neve,® API,® Manley,® and more*
Onboard UAD QUAD Core processing lets you track and mix with the included Teletronix LA‑2A and 1176 compressors, Pultec EQs, and 610‑B Tube Preamp & EQ plug-ins
Includes LUNA Recording System — a fully-integrated and inspiring music production application
Four Unison Preamps: Get the Genuine Sound of Neve, Helios, API & More
Apollo x4 features four Unison-enabled mic preamps, letting you track through exacting mic preamp emulations from Neve, Helios, API, Manley, Avalon, Universal Audio and many more. Exclusive to UA Audio Interfaces, Unison technology nails the tone of these sought-after tube and solid state mic pres — including their input impedance, gain stage “sweet spots,” and the component-level circuit behaviors of the original hardware.
The secret to Unison is its hardware-software integration between Apollo’s mic preamps and its onboard UAD QUAD Core DSP Acceleration. Simply place a Unison preamp plug-in on your mic input in Apollo Console software, and it physically reconfigures the Apollo interface's impedance — so you can tap into the classic sounds of the world’s most recorded mic preamps.
Watch the Unison Shoot Out (hardware vs. software) video
Elite-Class A/D and D/A Conversion
With thousands of hit songs and hundreds of Grammy-winning albums under their belt, Apollo interfaces are used to track exceptional-sounding records every day. To improve on the previous generation of desktop Apollo interfaces’ class-leading audio conversion, UA engineers redesigned the x4’s audio conversion to deliver a striking 127 dB dynamic range and -117 dB THD+N, giving Apollo x4 a spacious, organic sound that easily rivals dedicated high-end converters.
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.
A Full Suite of Classic
Analog Processing Onboard
Right out of the box, Apollo x4 offers a suite of incredible analog emulation plug-ins including the world’s only authentic Teletronix LA-2A, 1176LN, Fairchild 670, Pultec EQs, and the UA 610-B Tube Preamp & EQ. Developed by UA’s world-renowned team of algorithm engineers, these Realtime Analog Classics Plus plug-ins set the standard by which all other hardware emulation plug-ins are judged.
From the tube warmth of the Pultec EQ on guitars, to the gentle limiting of the LA-2A on vocals, your recordings will take a giant leap forward in rich, sonically complex analog sound.
See Included Plug-Ins | Watch the live tracking video
Access the World of UAD Powered Plug-Ins
Beyond the included Realtime Analog Classics Plus plug-ins, Apollo x4 lets you tap into the full library award-winning UAD Powered Plug-Ins — including vintage EQs, Compressors, Reverbs, Tape Machines 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 Neve, Lexicon, Capitol Studios, API, Manley, Ampex, Fender, and more,* it’s like having an endless analog studio, right on your desktop. And unlike competing interfaces, these DSP-powered plug-ins are also available in your DAW for mixing.
Record with Vintage Amps
Apollo x4 also includes Unison technology on its front panel instrument inputs, giving you access to dead-on emulations of guitar and bass amps like the Fender '55 Tweed Deluxe, Marshall Plexi Super Lead 1959, and the Ampeg B-15N Bass Amplifier.
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.
Expanded I/O and Built-in Talkback Mic
In addition to its four onboard Unison-equipped preamps, Apollo x4 offers two headphone outs and two Hi-Z instrument inputs — greatly enhancing your collaborative process. Plus, with a total of four line outs, optical ADAT/SPDIF input and output, plus dedicated monitor remote controls and a built-in Talkback mic, the 12 x 18 Apollo x4 can serve as the powerful centerpiece of your professional desktop studio.
Build a Networked Studio
Users of any Thunderbolt-equipped Apollo interface can combine up to four Apollos and six total UAD-2 devices — adding I/O and DSP as your studio grows. Once you expand your studio with an Apollo x6, x8, x8p, or x16 rackmount unit, you can use Apollo x4 as a desktop monitor control while still tapping its additional I/O and DSP power.
“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)
“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 (Kanye West, Jay-Z, Fun.)
“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)
“My Apollos are my sound.
Where I go, they go.”
– Trevor Lawrence Jr. (Dr. Dre, Herbie Hancock, Eminem)
“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 was able to front a live mix, create a monitor mix, and record to Pro Tools, 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 going to be 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*Apollo x4 includes the “Realtime Analog Classics Plus” UAD plug-in bundle. Other UAD plug-ins sold separately at www.uaudio.com.
September 19, 2020
Upgrade from Apollo Twin Solo Silverface
I was getting frustrated with my Twin's lack of DSP. I often use the Fender Tweed 55 as a Unison insert and that was all my Twin could handle. I would have to waste time shutting off the...Read More
September 12, 2020
love the new X8
Bought one after my old Apollo 8 got toasted by an electrical storm . Using the new X8 with a 5-year old Mac and a Thunderbot 2 cable-adaptor, and it is still way faster than the old A-8...Read More
September 8, 2020
Upping the ante
I’ve been using an Apollo twin duo quad core for a few years now and have not had a problem so it would stand to reason that when the x4 came out it would be the logical...Read More
September 5, 2020
A beautifully built and fantastically sounding music interface - I finally found my favorite music companion that I was looking for a long time. Especially love two high-z inputs and the...Read More
August 31, 2020
A paradigm shift.
Apollo provides an exponential increase in the capabilities I had with previous home studio setups. Solid, well-engineered hardware with seamless software and firmware integration....Read More
August 30, 2020
Great audio interface
I love my x4 Apollo. To have for 4 mic/line inputs is great! I have 2 line inputs for my keyboard and 2 for my Sphere L22. Just enough inputs for my project size.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
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.
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 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.
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
4 Unison mic preamps offer stunning models of classic tube and transformer-based mic preamps and guitar amps
UAD-2 QUAD Core Processing for tracking through vintage compressors, EQs, tape machines, mic preamps, and guitar amp plug-ins with near-zero latency
Produce with LUNA Recording System — a fully-integrated recording application made for Apollo (Mac/Thunderbolt)
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 via Optical ADAT/SPDIF input
Optical ADAT/SPDIF output for connecting to additional studio equipment
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. Other UAD plug-ins sold separately.
Runs UAD Powered Plug-Ins via VST, RTAS, and AAX 64 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 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)
Upgrade from Apollo Twin Solo Silverface
I was getting frustrated with my Twin's lack of DSP. I often use the Fender Tweed 55 as a Unison insert and that was all my Twin could handle. I would have to waste time shutting off the Tweed just to tune between takes. I also began trying to record my band at rehearsal and only having two microphone inputs was too limiting for my needs.
The X4 solved a lot of these issues and more. Having 4 inputs - especially having 2 HiZ inputs - makes recording in a number of scenarios much easier. Having 2 headphone cues is also very nice. I have a UAD-2 Satellite so that combined with the X4 exceeds my current needs and gives me room to grow.
Its a good product, but the value is half there
This is my first time buying appolo but my second time buying Universal Audio products. My first purchase was the ox top box which I am in love with. I wish the appolo measured up. I know when I get the plugins I will like the product but its a bummer feeling to pay so much for an item and feel like you cant enjoy it till you've spent more money on the plugins that should have co.e with it. And by more money I mean, like another almost $3000 cdn. Sticker shock has set in and i feel i didnt get my moneys worth. When comparing the two products and what I got for my money I was dissipointed with the appolo. Not because it is not good equipment, but because it wasnt a complete package and was quite expensive to only get half the product or an incomplete experience. It should have come with the full package of plugins for the price I paid, or if they really can't justify including the plugins in that price they should have at least raised the price of the unit and included it in the box. I also did not like that the appolo did not have midi support. Also, a monthly subscription or financing options for the plugins would be at least a better idea so that they can be more accessable and budget friendly for the musician that just bought an already expensive item.
love the new X8
Bought one after my old Apollo 8 got toasted by an electrical storm . Using the new X8 with a 5-year old Mac and a Thunderbot 2 cable-adaptor, and it is still way faster than the old A-8 and seems to have a lot more CPU-power too. Plus it sounds great. Highly recommended.
Upping the ante
I’ve been using an Apollo twin duo quad core for a few years now and have not had a problem so it would stand to reason that when the x4 came out it would be the logical choice to upgrade to, I decided to do a full studio upgrade with a new MacBook Pro ,49inch curved screen, softube console and fader and an octo satellite all using thunderbolt 3 through a hub and I could not be more elated awesome sound easy to set up and use along with luna the future looks and sounds great.
Apollo X4 is pretty good. The A/D converter is excellent and can be hear in the sound quality. The Hi Z input is also really good. The pre-amps are also top notch with the mics I used. I haven't played with all the plugg-ins given with my purchase, but not fully impressed just yet, so I will keep my comments abt the pluggins for later. I would have given full 5 stars, but there are a couple of things I don't like. One is the heat in the unit. It gets scary hot, so I put a laptop cooler under it to keep it somewhat cooler. The other is the fact that my browser shows all the UA pluggins, when I only have about 20 that came with the purchase, which makes it hard to browse and use them.
A beautifully built and fantastically sounding music interface - I finally found my favorite music companion that I was looking for a long time. Especially love two high-z inputs and the two headphone outputs on the front panel are a game changer. Well done, Universal Audio.
A paradigm shift.
Apollo provides an exponential increase in the capabilities I had with previous home studio setups.
Solid, well-engineered hardware with seamless software and firmware integration. Apollo, Unison and Luna provide the optimal digital workflow with analog emulation good enough to fool or appease the purists.
Great audio interface
I love my x4 Apollo. To have for 4 mic/line inputs is great! I have 2 line inputs for my keyboard and 2 for my Sphere L22. Just enough inputs for my project size.
A Sound Investment
Sounds wonderful, as do the plugins provided with it. I can even hear the difference (warmer and clearer) between this and my trusty Apogee interface. The first tracks recorded using Luna or Logic Pro sound great.
The portable UA interface I was dreaming of
I got the x6 and not long after UA released the x4 which is the thing I really wanted/needed to replace my Twin: fits in my backpack, has enough cores to support a real mix and 2 headphone outs (the biggest flaw of the Twin IMO). So I sold the x6 and got the x4, loosing a grand. Because the x6 and x4 markets overlap, I think UA should have been honest and announced the whole X series together to avoid loyal customers like me to waste money.
Best Interface I've ever had
This interface has just completely changed the way me and my band now see the experience of recording. Unison preamps are beyond amazing. UAD has really done it: bridging the gap between the analog and digital world. Watch how it will all change from now on. UAD did it.
For musicians too, not just for recording techs...
I'm a musician, not a recording engineer, so I like things good and (cheap) and simple. After fiddling with the Apollo, I realized it's MUCH easier and quicker getting to a really good recorded sound, so I can focus on the music. To be fair, it IS more complicated to setup than the battery powered mixer/recorder I was using, but with a little bit of a learning curve, the payoff is studio quality sound from a portable setup.
Also recording an electric guitar direct was never really an option for me before...but the direct options on the Apollo are really indistinguishable from mic'ed amps. I still prefer to perform with a live amp in a room, but judging purely from the recorded sound I can dial in a sound that is EXACTLY like what I'm getting through a mic'ed amp - that's amazing.
Huge step up from the Twin MKII
I had been using the Apollo Twin MKII to record at home but it was always a bit of a struggle because of the limited number of inputs on the device. Switching between guitars wasn't necessarily an issue because I had an A/B box but if I wanted to record something from an XLR input, this would an issue as anything in the HiZ inputs override the XLR inputs so those need to be unplugged. Additionally, since there was only one headphone output, I had to use an external HP mixer which just cluttered things up so much more. And don't even get me started on the struggle with limited DSP that I would constantly run into.
Now with the x4 I have all of the ports that I need for a home setup. Gone is the AB box for the guitars on the HiZ inputs. All of my XLRs can go into inputs 3 & 4 and I never have to unplug anything. The two HP outputs are perfect for recording with my wife (and singer). I am also now able to load up all the plugins that I need for recording guitar and bass in one "scene" so I don't have to constantly swap between them while in the middle of writing music.
The x4 has been a dream come true for me at home and it checked off every box that I was struggling with before. Of course the sound quality is just as good as always with any UAD product, but it is the ease of use and simplicity if offers that makes this the perfect interface for home use over Twin series (At least for my needs).
If I were to find one complaint/gripe it would be that the HiZ and headphone inputs of the entire Apollo line is on the front of the unit as opposed to on the back. This does make it a little more of a challenge for me keeping my desk neat and tidy, but it is truly a small price to pay and I personally have found simple "work-arounds" to combat this. I use "L" connectors and the x4 sits above a small "runner" that I have between two monitor stands that the four cables are able to run through. The only "issue" here is I have to use a lower grade cable that is thinner overall and fit well next to one another. This is more of a personal aesthetic issue and should in no way be considered a issue with he performance of the product itself.
A perfect choice for my needs.
Excellent quality interface with exceptional sound and, unlike many USB interfaces, no appreciable latency. I can use this in conjunction with my Apollo Twin mkii interface which gives me 8 processors to remove plugin loading from my computer's processing. Universal Audio interfaces and related plugins are expensive but are probably the best available. If you're on the fence buy this, or another Universal Audio interface. You won't be disappointed.
Emhances my X8p
Very happy to own this, really strengthens my x8p and Octo Satellite.
What Can I say...
I love the ease of work flow. It doesn't get in the way but in increases and works well with my way of working. I can't praise it enough. I'm just annoyed I didn't get it sooner. A must have in all studios IMO.
The Apollo x4 is the biggest desk unit UA has and it’s very powerful. The ADAT expansion capabilities caught my attention as well as the ability to Daisy chain rack units and satellite units.
The physical switches for the inputs, monitors and headphones are very handy it replaced my monitor controller unit
My replacement X4 was a lemon. It will be a long while before I purchase another UA interface.
Is perfect. Very Amazing