Universal Audio Apollo x4 Gen2｜The Most Powerful Desktop Audio Interface for Professionals
The Apollo x4 Gen2 is the world’s most powerful desktop audio interface, featuring flagship Apollo X Gen 2 24-bit / 192 kHz AD/DA converters and UAD-2 QUAD Core DSP for realtime plug-in processing. With four Unison™ mic preamps and two Hi-Z instrument inputs, it authentically emulates legendary analog gear from Neve, API, Manley, and Fender — giving you professional sound and near-zero latency performance. Plus, Sonarworks® Apollo Monitor Correction lets you precisely calibrate speakers and headphones, ensuring accurate mixes in any environment.
The Gold Standard, on Your Desktop
We built Apollo x4 to bring the gold-standard audio performance of professional studios to your desktop.
With 24-bit / 192kHz elite-class conversion and expanded I/O, it delivers exceptional dynamic range and detail.
Apollo x4 puts the sound of the stars within your reach.
Record Through Iconic Preamps
Featuring four Unison™ preamps and Hi-Z instrument inputs,
Apollo x4 lets you track through authentic emulations of legendary hardware from Neve, Manley, API, Fender, and more.
Experience the same rich analog tones heard on countless classic records.
Hear the Details Like Never Before
With its Gen 2 design and ultra-high-resolution D/A converters,
Apollo x4 ensures pristine monitoring accuracy.
Paired with Apollo Monitor Correction and Sonarworks calibration,
you’ll hear every nuance of your mix with absolute precision — on monitors or headphones.
Mix with Authentic Analog Sounds
Right out of the box, Apollo x4 gives you access to professional UAD plug-ins
including the LA-2A compressor, Pultec EQs, and amps from Marshall and Ampeg.
Explore over 200 UAD plug-ins to unlock the proven hit-making sound of world-class studios.
Find Your Perfect Workflow
Like the world’s top studios, Apollo x4 features a powerful analog-style mixing engine
with flexible plug-in routing and monitoring.
New features like Auto-Gain, Bass Management, and Plug-In Scenes
make it easy to build a workflow that fits your creative process.
A Hybrid System for Your Mission
With QUAD Core DSP processing, Apollo x4 delivers seamless hybrid performance,
combining onboard DSP and native computing to handle large plug-in chains with ease —
a powerhouse workflow that outperforms any native-only recording setup.
Expand Your Studio as You Grow
Link up to four Thunderbolt Apollo interfaces for up to 128 channels of I/O,
and control them all from your desktop.
Wherever your music takes you, Apollo will always be within reach.
Key Features
- Elite-class Apollo X Gen 2 conversion with 24-bit / 192 kHz resolution and 129 dB dynamic range
- Four Unison™ mic preamps and dual Hi-Z inputs emulate classic analog gear tones
- UAD-2 QUAD Core DSP for realtime plug-in processing with near-zero latency
- New UAD Console features: Auto-Gain, Plug-In Scenes, Bass Management, Immersive Audio, and more
- Sonarworks® Apollo Monitor Correction* for precise speaker and headphone calibration
- Dual headphone outputs with independent control and integrated Talkback mic
- Thunderbolt connectivity for expansion with multiple Apollo units or Apollo x16D
- Includes legendary plug-ins from Auto-Tune, Fairchild, and Teletronix (Essentials+ / Studio+ Editions)
Technical Specifications
| Type | 12 x 18 Thunderbolt audio interface with QUAD Core DSP |
| Inputs | 4 x Unison™ mic preamps, 2 x Hi-Z instrument inputs |
| Analog Outputs | 2 x 1/4" Monitor Out, 4 x 1/4" Line Out (ALT 1/2) |
| Headphone Outputs | 2 x 1/4" TRS (independent volume control) |
| Digital I/O | Toslink optical I/O (ADAT or S/PDIF) |
| Sample Rate | 24-bit / 44.1–192 kHz |
| Dynamic Range | 129 dB (D/A conversion) |
| Monitoring | Talkback, ALT monitor switching, Sonarworks calibration, Bass Management |
| Console Features | Auto-Gain, Plug-In Scenes, Immersive Audio, Subwoofer Integration |
| Compatibility | macOS / Windows (requires Thunderbolt connection) |
| Included Plug-Ins | Essentials+ or Studio+ Edition (depending on model) |
| Dimensions / Weight | 23.3 × 6.6 × 15.6 cm / 1.47 kg |
| Power | 12V DC external power supply (max 19W) |
Included with Essentials+
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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
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Compressors / Limiters (7)
Fairchild 670 Legacy
Teletronix LA-2A Classic Leveler
Teletronix LA-2A Gray Classic Leveler
Teletronix LA-2A Legacy Leveling Amplifier
Teletronix LA-2A Silver Classic Leveler
UA 1176LN Legacy
UA 1176SE Legacy
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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
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Special Processing (4)
Auto-Tune Realtime Access
Oxide Tape Recorder
Precision Enhancer Hz
Verve Analog Machines Essential
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Instruments (1)
PolyMAX Synth
-
Delay & Modulation (3)
Galaxy Tape Echo
Precision Delay Mod
Precision Delay Mod L
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Reverbs & Rooms (3)
Precision Reflection Engine
Pure Plate Reverb
RealVerb Pro Custom Room Modeler
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Guitar & Bass (3)
Raw Distortion
Ampeg SVT-VR Bass Amplifier
Marshall Plexi Classic Amplifier
Included with Studio+
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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
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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 Limiting Amplifier
UA 1176SE Legacy Limiting Amplifier
UA 175B Classic Limiter Plug-In
UA 176 Classic Limiter Plug-In
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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
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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
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Instruments (6)
Electra 88 Vintage Keyboard Studio
Moog Minimoog
Opal Morphing Synth
PolyMAX Polyphonic Synth
Ravel Grand Piano
Waterfall B3 Organ
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Delay & Modulation (6)
Brigade Chorus Pedal
Galaxy Tape Echo
Precision Delay Modulation
Precision Delay Modulation Long
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
THINK2 Warranty & Support
- Fast Shipping: In-stock items will be shipped within 24 business hours.
- Professional Technical Support: Our certified audio engineers provide consultation for installation, licensing, compatibility, and basic setup.
- Comprehensive Warranty & After-Sales Service: Includes both manufacturer warranty and THINK2 customer support.
※ Shipping times are calculated based on business days. Delays may occur during holidays or force majeure events. Actual warranty terms follow the manufacturer’s official policy, while THINK2 provides integration and support assistance.
THINK2 Warranty & Return Policy
- With valid proof of purchase and product serial number, customers are entitled to the manufacturer’s warranty and THINK2 after-sales service.
- DOA / Non-human defects: Within 7 days from the purchase date, after verification, customers may request a return or replacement.
- Exclusions: Damages caused by misuse, unauthorized disassembly or modification, consumable parts, natural disasters/force majeure, or improper use beyond specifications and instructions.
- Application Process: Contact customer service during business hours and follow the provided packaging and return instructions.
- Service Coverage: Taiwan region as primary service area; lead time and costs for offshore/overseas service depend on actual logistics standards.
