Universal Audio UA Apollo x4 Gen 2 STU (Desktop/TB3/MAC/WIN)

Record and mix larger sessions and hear every detail with the next generation of UA’s Apollo x4 interfaces, featuring highest-resolution audio conversion, four Unison™ mic preamps, and QUAD Core DSP processing. This allows you to record in real-time through UAD plug-ins from Neve, Manley, Avalon, SSL, and hundreds more.

Trusted by top artists and producers, Apollo x4 levels up your productions with timeless sound and legendary UA craftsmanship, built to inspire your next collaboration.

Key Benefits
Hear next generation audio conversion with the widest dynamic range and lowest distortion of any Apollo
Experience analog tones with Unison™ preamps, recording in real-time through authentic emulations of Neve, API, Avalon, Manley, Fender, and more
Access the full library of 200+ UAD DSP and Native plug-ins, including award-winning titles like Capitol Chambers, Sound City Studios, EL8 Distressor, and more
Mix with confidence in any room or through headphones using Apollo Monitor Correction powered by Sonarworks®*
Use Auto-Gain to set your levels across multiple inputs in seconds and never miss the take
Hear all the low-end detail in your mixes using bass management to add a subwoofer to your monitor setup
Quickly set up low-latency cues, plug-in scenes, and immersive audio monitoring with the UAD Console app
Get thousands of dollars in award-winning UAD plug-in titles from Auto-Tune, Fairchild, Teletronix, and more with a choice of Essentials+ or Studio+ Editions

Get the Most Powerful Desktop Apollo Ever
Universal Audio built Apollo x4 to expand on the gold-standard Apollo Twin, the interface that revolutionized home and project studio recording. With expanded I/O count, unprecedented dynamic range, and elite-class 24-bit / 192 kHz audio conversion, Apollo x4 puts the sound of the stars in reach for project studios and collaborators.

Record Through Iconic Preamps
Apollo x4's four Unison™ preamps and dual front panel Hi‑Z instrument inputs let you track in real-time through preamp and channel strip plug-ins from Neve, Manley, API, and more, giving you rich analog textures used on the greatest recordings of our time.

Mix with Authentic Analog Sounds
Apollo x4 provides the tools used in the world’s biggest recording studios right out of the box. With included Teletronix LA-2A compressors, Pultec EQs, and amps from Marshall and Ampeg, you can tap into over 200 UAD plug-ins, including hit-making sounds like Ocean Way Studios and Capitol Chambers.

Hear the Details Like Never Before
Now in its Gen 2 design, Apollo x4 features UA’s highest-resolution D/A converters ever, paired with Apollo Monitor Correction powered by Sonarworks®. Whether listening through monitors or headphones, you'll hear the most pristine representation of your recordings, with no surprises when you listen to your final mix or master.

Find Your Flow in the UAD Console App
Apollo x4's digital mixing engine lets you control plug-in routing and monitoring just like an analog studio console. With features like Auto-Gain, Bass Management, and Plug-In Scenes, it's easy to find a workflow that fits your needs.

A Hybrid System, Made for Your Mission
Combine Apollo x4’s QUAD Core DSP with native processing from your computer to produce large sessions with complex plug-in chains, offering a hybrid workflow that outpaces any native-only recording setup.

Expand Your Studio as You Grow
Link up to four Thunderbolt Apollo interfaces for up to 128 channels of premium I/O and control everything from your desktop using Apollo x4. No matter how far your music takes you, an Apollo will always be within reach.**

Key Features
12 x 18 Thunderbolt 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 Apollo Monitor Correction Add-on and SoundID Reference licenses, available from sonarworks.com

**For full compatibility information, refer to help.uaudio.com