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Now supports Apollo Monitor Correction powered by Sonarworks®

Record hits with the world’s most powerful desktop audio interface.

Produce larger sessions with our most powerful desktop Apollo. Featuring highest-resolution audio conversion, four Unison™ mic preamps, and realtime UAD processing — letting you record through plug-ins from Neve, API, Manley, Auto-Tune, and hundreds more — Apollo x4 levels up your studio with legendary UA sound, built to inspire your next collaboration.

Produce music with elite-class Apollo X Gen 2 converters, and hear every detail with unprecedented dynamic range

Use four Unison preamps to get the tone and feel of iconic analog gear from Neve, API, Manley, Fender, and more

Record through UAD plug-ins in realtime with onboard QUAD Core DSP

Work faster with new UAD Console features including Auto-Gain, Plug-In Scenes, Monitor Controller, Immersive Audio, and more

Mix with confidence in any room or through headphones using Apollo Monitor Correction by Sonarworks®*

Get included UAD plug-ins from Auto-Tune, Fairchild, Teletronix, and more with Essentials+ or Studio+ Editions

4 Unison PreampsImpedance-matched analog modeling
Unison technology recreates the sound and feel of classic analog gear with digital control of mic preamp impedance and gain staging.
-120 dB THD+NStudio-grade D/A conversion
Apollo X Gen 2 converters let you record with unprecedented low noise and distortion (0.0001% THD+N).
129 dB DNRUltra low-noise recording
Enhanced Monitor D/A delivers the widest dynamic range of any Apollo interface to date.
2 Elite-Class HP OutsProfessional headphone monitoring
Clean, powerful headphone amplification delivers 124 dB DNR and -108 dB (0.0004%) THD+N into 300Ω.

Get Our Most Powerful Desktop Apollo

We built Apollo x4 to expand on the gold-standard Apollo Twin, the audio interface that single-handedly revolutionized home studio recording. With expanded I/O, elite-class 24-bit/192 kHz audio conversion, and the widest dynamic range to date, Apollo x4 puts the sound of the stars in reach for your next collaboration.

Record Through Iconic Preamps

Record Through Iconic Preamps

With four Unison™ preamps and dual front panel Hi‑Z instrument inputs, Apollo x4 lets you track through emulations of classic gear from Neve, Manley, API, Fender, and dozens more, giving you the rich analog textures used on the greatest recordings of our time.

Hear the Details Like Never Before

Hear the Details Like Never Before

Now in its Gen 2 design, Apollo x4 features our highest-resolution D/A converters ever. This enhanced monitoring, paired with features like Apollo Monitor Correction by Sonarworks,* means you’ll hear the most accurate representation of your recordings when mixing through monitors or headphones.

*Requires SoundID Reference software and compatible measurement microphone. Learn more at sonarworks.com



See What’s New in Gen 2

Learn about the next Generation of Apollo from top artists and influencers around the globe.



  • Everything you need to know about Apollo X Gen 2
  • Everything you need to know about Apollo X Gen 2

    Everything you need to know about Apollo X Gen 2

  • Getting Started with Apollo X | Gen 2

    Getting Started with Apollo X | Gen 2

  • Gen 2 Apollo X is Here! Universal Audio’s Legendary Interfaces Get an Upgrade

    Gen 2 Apollo X is Here! Universal Audio’s Legendary Interfaces Get an Upgrade

  • New Apollo X Gen 2 by Universal Audio | Review & Sound Quality Test

    New Apollo X Gen 2 by Universal Audio | Review & Sound Quality Test

  • First Listen: Universal Audio Apollo X Gen 2 Audio Interfaces

    First Listen: Universal Audio Apollo X Gen 2 Audio Interfaces

  • Universal Audio Apollo Gen 2 is Here! - Can It Get Better?!

    Universal Audio Apollo Gen 2 is Here! - Can It Get Better?!

  • Universal Audio Apollo Gen 2 Interfaces: The Best UA Interfaces Yet?

    Universal Audio Apollo Gen 2 Interfaces: The Best UA Interfaces Yet?

  • NEW Universal Audio Apollo Gen 2 are here!!

    NEW Universal Audio Apollo Gen 2 are here!!

  • Everything NEW about the Universal Audio Apollo Gen 2 | Gear4music Synths & Tech

    Everything NEW about the Universal Audio Apollo Gen 2 | Gear4music Synths & Tech

  • Apollo X | Gen 2: Built for the Stars, Ready for Your Studio

    Apollo X | Gen 2: Built for the Stars, Ready for Your Studio

Mix with Authentic Analog Sounds

Out of the box, Apollo x4 gives you the tools used in the world’s biggest recording studios. Along with included LA-2A compressors, Pultec EQs, and amps from Marshall and Ampeg — you can tap into the entire library of over 200 UAD plug-ins to unlock proven hit-making sounds.





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See plug-ins included with Essentials+

Channel Strips & Preamps (6)
Century Tube Channel Strip
CS-1 Channel Strip
Helios Type 69 Preamp & EQ
Precision Channel Strip
UA 610-A Preamp & EQ
UA 610-B Preamp & EQ

Compressors / Limiters (7)
Fairchild 670 Legacy
Teletronix LA-2A Classic Leveler
Teletronix LA-2A Gray Classic Leveler
Teletronix LA-2A Silver Classic Leveler
Teletronix LA-2A Legacy Leveling Amplifier
UA 1176LN Legacy
UA 1176SE Legacy

Equalizers (6)
Helios Type 69 Legacy EQ
Pultec EQP-1A Legacy EQ
Pultec EQP-1A Passive EQ
Pultec HLF-3C Passive EQ
Pultec MEQ-5 Passive EQ
Pultec Pro Legacy EQ

Special Processing (4)
Auto-Tune Realtime Access
Oxide Tape Recorder
Precision Enhancer Hz
Verve Analog Machines Essentials

Instruments (1)
PolyMAX Polyphonic Synth

Delay & Modulation (3)
Galaxy Tape Echo
Precision Delay Mod
Precision Delay Mod L

Reverbs & Rooms (3)
Precision Reflection Engine
Pure Plate Reverb
RealVerb Pro Custom Room Modeler

Guitar & Bass (3)
Ampeg SVT-VR Classic Bass Amplifier
Marshall Plexi Classic Amplifier
Raw Distortion






See plug-ins included with Studio+

Channel Strips & Preamps (9)
Avalon VT-737sp Channel Strip
Century Tube Channel Strip
CS-1 Channel Strip
Helios Type 69 Preamp & EQ
Manley Reference Microphone Preamp
Precision Channel Strip
UA 610-A Preamp & EQ
UA 610-B Preamp & EQ
V76 Preamplifier

Compressors / Limiters (17)
dbx 160 Compressor / Limiter
Empirical Labs Distressor
Fairchild 670 Legacy
Fairchild 660 Compressor
Fairchild 670 Compressor
Teletronix LA-2A Classic Leveler
Teletronix LA-2A Gray Classic Leveler
Teletronix LA-2A Silver Classic Leveler
Teletronix LA-2A Legacy Leveling Amplifier
Teletronix LA-3A Classic Audio Leveler
UA 1176 Rev A Classic Limiter
UA 1176AE Classic Limiter
UA 1176LN Rev E Classic Limiter
UA 1176LN Legacy
UA 1176SE Legacy
UA 175B Classic Limiter
UA 176 Classic Limiter

Equalizers (6)
Helios Type 69 Legacy EQ
Pultec EQP-1A Legacy EQ
Pultec EQP-1A Passive EQ
Pultec HLF-3C Passive EQ
Pultec MEQ-5 Passive EQ
Pultec Pro Legacy EQ

Special Processing (7)
Auto-Tune Realtime Access
Auto-Tune Realtime Advanced
Auto-Tune Realtime X
Oxide Tape Recorder
Precision Enhancer Hz
Studer A800 Multichannel Tape Recorder
Verve Analog Machines Essentials

Instruments (6)
Electra 88 Vintage Keyboard Studio
Moog Minimoog
Opal Morphing Synth
PolyMAX Polyphonic Synth
Ravel Grand Piano
Waterfall B3 Organ

Delay & Modulation (6)
Brigade Chorus Pedal
Galaxy Tape Echo
Precision Delay Mod
Precision Delay Mod L
Studio D Chorus
Waterfall Rotary Speaker

Reverbs & Rooms (4)
Lexicon 224 Digital Reverb
Precision Reflection Engine
Pure Plate Reverb
RealVerb Pro Custom Room Modeler

Guitar & Bass (3)
Ampeg SVT-VR Classic Bass Amplifier
Marshall Plexi Classic Amplifier
Raw Distortion


Find Your Perfect Workflow

Find Your Perfect Workflow

Just like many pro studios, where an analog console is the heart of the workflow, Apollo x4 has a powerful mixing engine where you control plug-in routing and monitoring. And with the latest features like Auto-Gain, Bass Management, and Plug-In Scenes, it’s easy to find a flow that fits your needs.

Learn more about UAD Console ›

A Hybrid System for Your Mission

A Hybrid System for Your Mission

Combine Apollo x4’s DSP processing with native processing from your computer to produce large sessions with complex plug-in chains — a powerhouse hybrid workflow that outpaces any native-only recording setup.

Expand Your Studio as You Grow

Build out your dream studio by linking up to four Thunderbolt Apollo interfaces for up to 128 channels of premium I/O, and control it all from your desktop using Apollo x4. So no matter how far your music takes you, an Apollo will always be in reach.**


12 x 18 Thunderbolt 3 audio interface with QUAD Core DSP plug-in processing

Four Unison™ mic preamps, two Hi-Z instrument inputs, optical Toslink I/O (ADAT or S/PDIF)

Two 1/4" monitor outs, four 1/4" line outs (ALT 1 / 2), two 1/4" TRS headphone outs

Elite-class Apollo X Gen 2 converters with 24-bit / 192 kHz resolution

Enhanced D/A for critical monitoring and playback with 129 dB dynamic range

Calibrate your main monitor and headphone outputs with Apollo Monitor Correction powered by Sonarworks®*

Fully-featured monitor controller with alternate speaker switching and integrated talkback for easy communication with talent

Updated UAD Console app featuring Auto-Gain, Plug-In Scenes, subwoofer integration with Bass Management, immersive audio support, and more

Onboard DSP supports over 200 UAD plug-ins via VST, AU, and AAX 64 formats in all major DAWs

Includes up to 50+ UAD plug-ins with Essentials+ or Studio+ Editions

Compatible with LUNA, Logic Pro, Pro Tools, Cubase, Ableton Live, and more**

Expandable with Thunderbolt Apollo interfaces or select models over Dante

Free industry-leading technical support from knowledgeable audio engineers


*Requires SoundID Reference software and compatible measurement microphone. Learn more at sonarworks.com
**For full compatibility information, refer to help.uaudio.com

Customer Reviews

Apollo x4

Overall Rating

5/5
(2)

r. Mercurio

December 6, 2024

Killer

Killer…..

F. Kuncewicz

November 6, 2024

a travel card

best features for travel card (4 pres 2 headphones and bad ecosystem)
the direct to converter is also nice
the sound is good to.
they should make some loyalty program for uses but its marketing not hardware review)