Universal Audio Apollo Twin X DUO Gen 2 STU+ (Desktop/TB3/MAC/WIN)
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Home / Universal Audio Apollo Twin X DUO Gen 2 STU+ (Desktop/TB3/MAC/WIN)
The Ultimate Professional Studio Bundle for Your Desktop Workstation
For serious music producers, mixing engineers, and demanding project studios, having great conversion and a handful of stock plugins isn't enough. The Apollo Twin X DUO Gen 2 Studio+ Edition bridges the gap between boutique desktop convenience and a multi-million-dollar mixing console environment.
Equipped with Universal Audio's highest-resolution D/A monitoring paths ever integrated into a twin-preamp desktop framework, this unit ensures that every sonic layer, transients' bite, and low-frequency depth is reproduced with clinical accuracy. Operating over a blazing-fast Thunderbolt 3 interface (compatible with macOS and Windows), its built-in DUO Core hardware processing engine lets you track, overdub, and mix using a hybrid architecture. By executing heavy plugin calculations on the hardware itself, it leaves your computer completely unburdened and free from latency bottlenecks or playback buffer errors.
Premium Studio+ Software Suite: A World-Class Outboard Rack
While other interface versions offer essential tracking tools, the Studio+ Edition unrolls a massive, curated library of over 50+ award-winning UAD plugin titles. This expanded bundle transforms your digital workstation into a legendary tracking room. You get elite, component-level modeled emulation channels including:
Boutique Channel Strips: The legendary Avalon VT-737sp Tube Channel Strip, Manley Reference Microphone Preamp, and the classic Helios Type 69 Preamp & EQ.
Iconic Dynamic Processors: The industry-standard Empirical Labs Distressor, dbx 160 Compressor/Limiter, and the UA 175B/176 Tube Limiters alongside collections of the Teletronix LA-2A and UA 1176.
Mastering Tape & Space Emulations: Studer A800 Multichannel Tape Recorder, Lexicon 224 Digital Reverb, and Pure Plate Reverb.
Virtual Premium Instruments: Moog Minimoog, Opal Morphing Synth, and the Ravel Grand Piano.
Dual Unison Preamps with Assistive Auto-Gain:
The interface houses two physical Unison-enabled microphone/line preamps and a front-panel Hi-Z instrument input. Rather than coloring your sound with cheap digital software filters, Unison technology creates a physical, bi-directional hardware link. When you load a modeled preamp strip, the Apollo Twin X physically switches its internal analog input impedance, input circuit behavior, and gain structures to match the vintage gear. To make tracking foolproof, the Gen 2 platform introduces Assistive Auto-Gain. With a single click inside the software, the Apollo instantly calculates and calibrates perfect input levels across multiple channels, protecting your tracks from clipping while maximizing headroom.
Acoustic Correction & Advanced Monitor Control:
The redesigned hardware serves as a fully integrated, premium studio monitor controller. It features built-in hardware keys for speaker switching, a Talkback Microphone to converse with talent, and Dim/Mono/Mute utilities.
Crucially, Gen 2 brings Apollo Monitor Correction powered by Sonarworks®. It allows you to run precise SoundID Reference calibration curves directly inside the interface's DSP chip. This delivers zero-latency acoustic room and headphone correction, ensuring your monitoring environment remains completely flat regardless of room reflections. Additionally, an integrated Bass Management crossover routing protocol enables tight, seamless subwoofer integration, giving you authoritative control over your low-end mix translation.
GEN 2 ELITE-CLASS AUDIO CONVERSION: Overhauled D/A monitoring matrix provides a stunning 129 dB dynamic range and ultra-low distortion.
EXPANDED STUDIO+ BUNDLE: Unlocks over 50+ world-class UAD plugins including Avalon VT-737, Empirical Labs Distressor, Lexicon 224, and Moog Minimoog.
DUAL UNISON MIC PREAMPS: Track through real-time analog impedance matching modeled after Neve, Manley, API, and SSL hardware desks.
ASSISTIVE AUTO-GAIN: Smart software control sets perfect gain staging levels automatically across your inputs in seconds.
DSP MONITORED CALIBRATION: Runs Sonarworks® SoundID Reference speaker/headphone calibration filters directly on internal DSP with zero latency.
DUO CORE PROCESSING ENGINE: Dual SHARC DSP chips offload processor-heavy analog emulation tasks from your computer's native CPU.
HARDWARE BASS MANAGEMENT: Real-time DSP-driven crossover controls inside the UAD Console app for smooth studio subwoofer balancing.
THUNDERBOLT 3 CONNECTIVITY: Premium low-latency PCIe audio drivers deliver lightning-fast data throughput for macOS and Windows systems.
| Feature | Official Specification |
| Interface Form Factor | Ergonomic Desktop Monitor Controller and Audio Interface |
| Simultaneous I/O Channels | 10 Inputs x 6 Outputs (Analog: 2 In / 6 Out, Digital: 8 In) |
| Host Connectivity | 1 x Thunderbolt 3 Port (Type-C Protocol / High-Bandwidth Architecture) |
| Audio Resolution | Mastering-grade 24-Bit / 192 kHz Gen 2 A/D and D/A Conversion |
| Onboard Hardware DSP | UAD-2 DUO Core Processing (2 x High-Performance SHARC DSP Chips) |
| Analog Inputs | 2 x XLR-1/4" TRS Combo (Mic/Line), 1 x 1/4" TS Hi-Z Instrument Input (Front Panel) |
| Analog Outputs | 2 x 1/4" TRS Monitor Out (L/R), 2 x 1/4" TRS Line Out (ALT), 1 x 1/4" Stereo Headphone Out |
| Digital Inputs | 1 x Optical TOSLINK Connector (8-Channel ADAT S/MUX or 2-Channel S/PDIF) |
| Dynamic Range (D/A) | 129 dB (Enhanced Monitor/Playback D/A Conversion Path) |
| Total Harmonic Distortion | -120 dB THD+N (Measured at Main Monitor Outputs) |
| Preamplifier Gain Range | +10 dB to +65 dB (Variable Impedance Input Response Control) |
| Integrated Control Functions | Talkback Microphone, Alternate Speaker Switch, Dim, Mono Summing, Mute |
| DAW Compatibility | Full support for LUNA, Logic Pro, Pro Tools, Cubase, Ableton Live, Studio One |
| OS Requirements | macOS 11 Big Sur or later / Windows 10 & 11 (64-Bit System Editions) |
| Power Requirements | 12V DC Center-Positive External Power Supply Unit (Included) |
| Dimensions | 6.31" W x 6.20" D x 2.60" H / 16.03 cm x 15.70 cm x 6.60 cm |
| Net Unit Weight | 2.2 lbs / 1.0 kg |
1 x Universal Audio Apollo Twin X DUO Gen 2 Desktop Audio Interface
1 x External 12V DC Power Supply Adapter with International Multi-Plug Kit
1 x UAD Studio+ Edition Software Suite Activation and Authorization Guide
1 x Official Universal Audio Product Registration and Factory Warranty Sheet
(Note: Connecting Thunderbolt 3 / Thunderbolt 4 cables are sold separately)
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