Key Features

• Musicians, Producers & Project Studios
• 50+ UAD Plug-Ins, Real-Time Processing
• External Power Supply, Mac/Windows
• 4 Unison Mic/Line Pre, 2 Hi-Z In
• 2 Headphone Out, 6 Line/Monitor Outs
• Gen 2 Elite-Class 24-Bit / 192 kHz AD/DA
• ADAT or S/PDIF I/O
• Auto-Gain Control, Monitor Correction
• Monitoring and Talkback Control
• Bass Management

Universal Audio built Apollo x4 to expand on the gold-standard Apollo Twin, the interface that single-handedly revolutionized home and project studio recording. With its expanded I/O count, unprecedented dynamic range, and elite-class 24-bit / 192 kHz audio conversion! now with enhanced monitoring! Apollo x4 puts the sound of the stars in reach for project studios and collaborators. With 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 textures used on the greatest recordings of our time.

Right out of the box, Apollo x4 gives you the tools used in the world's biggest recording studios. Along with included Teletronix LA-2A compressors, Pultec EQs, and amps from Marshall and Ampeg, you can tap into the entire library of over 200 UAD plug-ins and unlock proven hit-making sounds like Ocean Way Studios, Capitol Chambers, and many more.

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.® This means that when you playback your audio through monitors or headphones, you'll not only hear the most pristine representation of your recordings, there will be no surprises when you listen to your final mix or master. Just like an analog studio, where a console is the heart of the workflow, Apollo x4 has a powerful digital 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. Combine Apollo x4's QUAD Core DSP with native processing from your host computer to produce large sessions with complex plug-in chains ! a powerhouse hybrid workflow that outpaces any native-only recording setup.

What's New with Gen 2?

• New look and feel, updated industrial design with new knobs and switch caps
• Improved Elite-Class Gen 2 D/A converters 
• Improved monitor and headphone outputs for best-in-class critical listening
• Even lower THD% and increased DNR
• Assistive Auto-Gain, supporting one-click configuration across all input channels with select Unison preamps, for effortless recording
• Built-in room correction enabling Sonarworks SoundID profiles to run on built-in DSP
• Bass Management for subwoofers in both stereo and surround configurations
• New UAD Console brings Auto-Gain, Unison, Apollo Room Correction, DSP Pairing, Dante Support, Multichannel Immersive Audio Monitoring, Bass Management, Plug-In Scenes over MIDI, and more—together under one roof
• New Essentials+ and Studio+ software bundles with UAD plug-ins and Instruments

Record Through Four Unison Preamps

• With Unison technology, Apollo x4 Gen 2 lets you track in real time with the sound of classic EQs and compressors.
• From Neve, API, Manley, Fender, and more, you get the same rich analog textures used on the greatest recordings of our time.

Hear the Details Like Never Before

• Apollo x4 features UA's high-resolution A/D and D/A converters, delivering 129 dB of dynamic range.
• This enhanced monitoring, when paired with the newest features like Apollo Monitor Correction by Sonarworks, means you'll hear the most accurate representation of your recordings when mixing through monitors or headphones. And there will be no surprises when you listen to your final mix or master on any stereo system.

Auto-Gain: Never Miss The Take

• Set input gain across multiple channels in seconds without fear of clipping using the new Auto-Gain feature—available on all microphone / line / Hi-Z preamp inputs.
• Effortlessly set gain for recording during an auto-training time listening window, without having to worry or take a lot of time to find the perfect recording level.

Bass Management

• Add a subwoofer with the new bass management feature for full-range stereo monitoring.
• Speaker utility panel provides trim, mute, and solo per speaker output.

Apollo Room Correction

• Room Correction runs on a single SHARC DSP core with UA's studio-grade low-latency EQ algorithms, using over 20 precision filters and up to 100 ms of loudspeaker time alignment to transform your monitoring accuracy.
• Create SoundID Reference measurements for Apollo Room Correction directly within the SoundID Reference Measure desktop application.

Find Your Flow in the UAD Console App

• Just like an analog studio, where a console is the heart of the workflow, Apollo x4 has a powerful digital mixing engine, where you control plug-in routing and monitoring.
• With the latest features like Bass Management and Plug-In Scenes, it's easy to find a flow that fits your needs.

A Hybrid System, Made for Your Mission

• Combine Apollo x4's QUAD Core DSP with native processing from your host computer.
• 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 your studio by linking up to four Thunderbolt Apollo interfaces with up to 128 channels of premium I/O.
• Control it all from your desktop using Apollo x4.

Key Features

• 12x18 Thunderbolt audio interface with QUAD Core DSP real-time plug-in processing
• Includes up to 50+ UAD plug-ins with Studio+ Edition
• 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
• Full-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
• 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

56 Effects and Instruments, One Rack SpaceChannel Strips and Preamps (9)

• Avalon VT-737sp Channel Strip
• Century Tube Channel Strip
• CS-1 Channel Strip
• Helios Type 69 Preamp and EQ
• Manley Reference Microphone Preamp
• Precision Channel Strip
• UA 610-A Preamp and EQ
• UA 610-B Preamp and EQ
• V76 Preamplifier

Compressors/Limiters (17)

• dbx 160 Compressor / Limiter  
• Empirical Labs Distressor
• Fairchild 670 Legacy
• Fairchild 660 Compressor
• Fairchild 670 Compressor
• Teletronix LA-2 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 (6)

• Auto-Tune Realtime Access
• Auto-Tune Realtime X
• Oxide Tape Recorder
• Precision Enhancer Hz
• Studer A800 Multichannel Tape Recorder
• Verve Analog Machines Essentials

Delay and Modulation (6)

• Brigade Chorus Pedal
• Galaxy Tape Echo
• Lexicon 224 Digital Reverb
• Precision Delay Mod
• Precision Delay Mod L
• Studio D Chorus

Reverbs and Rooms (3)

• Precision Reflection Engine
• Pure Plate Reverb
• RealVerb Pro Custom Room Modeler

Guitar and Bass (3)

• Ampeg SVT-VR Classic Bass Amplifier
• Marshall Plexi Classic Amplifier
• Raw Distortion

Instruments (6)

• Electra 88 Vintage Keyboard Studio
• Moog Minimoog
• Opal Morphing Synth
• PolyMAX Polyphonic Synth
• Ravel Grand Piano
• Waterfall B3 Organ

UPC: 819937004704Items Included

• Universal Audio Apollo x4 Gen 2 Thunderbolt 3 Audio Interface with Studio+ Bundle
• External Power Supply
• AC Power Cable (IEC)
• Limited 1-Year Manufacturer Warranty (Parts and Labor)