12 x 18 Desktop Thunderbolt Audio Interface
- 12 x 18 Desktop Thunderbolt Audio Interface with Integrated Quad-Core DSP
- Four Unison™ microphone preamps with real-time analog emulations
- Apollo X Gen 2 audio conversion up to 24-bit / 192 kHz
- Auto-Gain for automatic adjustment of input levels
- Apollo Monitor Correction with Sonarworks® support
- Integrated bass management for stereo and multichannel systems
- Compatible with over 200 UAD DSP and Native plug-ins
- UAD Analog Classics Pro bundle included with over 80 professional plug-ins
- Expandable up to 128 channels via Apollo Thunderbolt systems
- Compatible with Mac and Windows
The Universal Audio Apollo X4 Gen 2 AC Pro Analog Classics Pro is a 12 x 18 desktop Thunderbolt audio interface designed for producers, musicians, content creators, and professional studios seeking the sound quality of the Apollo X Gen 2 series in a compact form factor. With four Unison™ microphone preamps, next-generation audio conversion, and a QUAD Core DSP processor, it delivers professional-grade performance for recording, production, mixing, and mastering.
This version includes the UAD Analog Classics Pro bundle, a software suite featuring over 80 professional Universal Audio plug-ins that provide authentic emulations of legendary analog hardware for recording, mixing, mastering, and music production.
Four Unison Preamps for Professional Recordings
The four Unison™ microphone preamps let you record in real time using Universal Audio’s renowned emulations. Unison technology modifies the input’s impedance, gain, and circuit behavior to faithfully replicate the operation of historic analog preamps and channel strips.
Thanks to dedicated plug-ins, you can record directly with the sonic character of gear from Neve, API, Avalon, Manley, SSL, and many other leading professional audio brands.
Apollo X Gen 2 Conversion
The Apollo X Gen 2 platform introduces completely redesigned A/D and D/A converters that deliver superior dynamic range, extremely low distortion, and even more faithful reproduction of recorded material. Conversion up to 24-bit / 192 kHz ensures top-tier professional performance.
The new D/A monitoring achieves a dynamic range of 129 dB, offering greater precision during recording, mixing, and mastering.
QUAD Core DSP and UAD Analog Classics Pro Bundle
The QUAD Core DSP processor allows you to use Universal Audio plug-ins during recording with virtually zero latency. Compressors, equalizers, channel strips, reverbs, delays, dynamic processors, and amplifiers can be loaded directly onto the DSP without taxing the computer’s CPU.
The UAD Analog Classics Pro bundle includes over 80 professional plug-ins, including preamps, compressors, equalizers, reverbs, creative effects, virtual instruments, guitar and bass amps, and dedicated extensions for LUNA, offering a comprehensive platform for any music production.
Auto-Gain and Apollo Monitor Correction
Auto-Gain automatically adjusts the ideal level of the preamps in just a few seconds, speeding up session setup and reducing the risk of clipping. Apollo Monitor Correction, developed in collaboration with Sonarworks®, allows you to calibrate monitors and headphones to achieve an extremely linear and reliable response during mixing.
Integrated Bass Management
The Bass Management feature allows you to easily integrate a subwoofer into your monitoring setup, improving control over low frequencies in both music production and multimedia applications.
Professional Workflow with UAD Console
The UAD Console app lets you control routing, ultra-low-latency monitoring, Plug-In Scenes, Auto-Gain, and Bass Management from a single, intuitive interface. Integration with LUNA offers a workflow inspired by analog consoles while maintaining all the flexibility of modern DAWs.
The Apollo X4 Gen 2 AC Pro Analog Classics Pro is compatible with LUNA, Logic Pro, Pro Tools, Cubase, Ableton Live, and all major professional audio workstations available for Mac and Windows.
Expand Your Apollo System
You can connect up to four Apollo Thunderbolt interfaces to achieve up to 128 channels of professional I/O. Apollo X4 is therefore an ideal solution both as the centerpiece of a desktop studio and as part of a larger Apollo system designed for professional productions.
Included UAD Analog Classics Pro Plug-ins
The Analog Classics Pro version includes over 80 professional UAD plug-ins for recording, mixing, mastering, music production, and post-production.
Vocals & Pitch Correction
- Topline Vocal Suite
- Topline Key Finder
Channel Strips & Preamps
- API® Preamp
- API® Vision Channel Strip
- API® Vision Channel Strip Legacy
- Avalon® VT-737sp Channel Strip
- CS-1 Channel Strip
- Century Tube Channel Strip
- Helios® Type 69 Preamp & EQ
- LA-6176 Signature Channel Strip
- Manley® Reference Microphone Preamp
- Manley® VOXBOX Channel Strip
- Neve® 1073 Preamp & EQ
- Neve® 88RS Channel Strip
- Neve® 88RS Legacy Channel Strip
- Precision Channel Strip
- SSL® E Series Channel Strip
- SSL® E Series Channel Strip Legacy
- UA 610-A Preamp & EQ
- UA 610-B Preamp & EQ
- V76 Preamplifier
Compressors / Limiters
- API® 2500 Stereo Bus Compressor
- dbx® 160 Compressor / Limiter
- Empirical Labs EL8 Distressor
- Fairchild 660 Compressor
- Fairchild 670 Compressor
- Fairchild 670 Legacy Compressor
- Precision Buss Compressor
- SSL® G Series Bus Compressor
- SSL® G Series Bus Compressor Legacy
- Teletronix LA-2 Classic Leveler
- Teletronix LA-2A Gray Classic Leveler
- Teletronix LA-2A Silver Classic Leveler
- Teletronix LA-2A Legacy
- Teletronix LA-2A Tube Compressor
- Teletronix LA-3A Classic Audio Leveler
- UA 1176 FET Compressor
- UA 1176 Rev A Classic Limiter
- UA 1176AE Classic Limiter
- UA 1176LN Rev E Classic Limiter
- UA 1176LN Legacy
- UA 1176SE Legacy
Equalizers
- Helios Type 69 Legacy EQ
- Neve® 1073 Legacy
- Neve® 1073SE Legacy
- Precision Equalizer
- 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
- A-Type Multiband Dynamic Enhancer
- Ampex® ATR-102 Mastering Tape Recorder
- Little Labs® Voice Of God Bass Resonance
- Oxide Tape Recorder
- Precision De-Esser
- Precision Enhancer Hz
- Precision Enhancer kHz
- Studer® A800 Multichannel Tape Recorder
- Vibe Analog Machines Essentials
Instruments
Delay & Modulation
- Brigade Chorus Pedal
- Cooper® Time Cube MkII Delay
- EP-34 Tape Echo
- Galaxy Tape Echo
- KORG® SDD-3000 Digital Delay
- Precision Delay Mod
- Precision Delay Mod L
- Studio D Chorus
Reverbs & Rooms
- Lexicon® 224 Digital Reverb
- Ocean Way Studios Deluxe
- Ocean Way Studios
- Precision Reflection Engine
- Pure Plate Reverb
- UAD Sound City Studios
Mastering
- Precision Limiter
- Precision Maximizer
- Precision Multiband
Guitar & Bass
- Bermuda Triangle
- Fender® ’55 Tweed Deluxe
- Raw Distortion
- TS Overdrive Pedal
- UAD Dream ’65 Reverb Amplifier
- UAD Lion ’68 Super Lead Amp
- UAD Ruby ’63 Top Boost Amplifier
- UAD Showtime ’64 Tube Amp
- UAD Woodrow ’55 Instrument Amplifier
LUNA Extensions
- Ampex® ATR-102 Master Tape Extension
- API® Summing Extension
- API® Vision Console Emulation
- Studer® A800 Multitrack Tape Extension
Technical Specifications
- 12 x 18 Desktop Thunderbolt Audio Interface
- Integrated Quad-Core DSP
- Four Unison™ microphone preamps
- Two Hi-Z instrument inputs
- Toslink ADAT / S/PDIF optical I/O
- Two 1/4" TRS monitor outputs
- Four 1/4" TRS line outputs (ALT 1 / 2)
- Two independent 1/4" TRS headphone outputs
- Apollo X Gen 2 converters up to 24-bit / 192 kHz
- D/A monitoring with dynamic range up to 129 dB
- Apollo Monitor Correction compatible with Sonarworks®
- Main monitor and headphone calibration
- Built-in monitor controller
- Built-in talkback
- Auto-Gain
- Integrated bass management
- Plug-in scenes via UAD Console
- Immersive audio support
- DSP compatible with over 200 UAD plug-ins
- Support for 64-bit VST, AU, and AAX
- Compatible with LUNA
- Compatible with Logic Pro
- Compatible with Pro Tools
- Compatible with Cubase
- Compatible with Ableton Live
- Compatible with Mac and Windows
- Expandable with Apollo Thunderbolt interfaces
- Expandable via compatible Apollo models and Dante
- Up to 128 channels of I/O using multiple Apollo interfaces
- UAD Analog Classics Pro bundle with over 80 plug-ins included
- Universal Audio technical support provided by expert audio engineers