Universal Audio Apollo Twin X QUAD Gen 2 STU+ (Desktop/TB3/MAC/WIN)
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Home / Universal Audio Apollo Twin X QUAD Gen 2 STU+ (Desktop/TB3/MAC/WIN)
Maximum DSP Horsepower Meets the Ultimate Professional Software Suite
For modern creators who run deep tracking channels and dense mix sessions, system limitations can destroy creative momentum. The Apollo Twin X QUAD Gen 2 Studio+ Edition removes those boundaries by combining Universal Audio's most advanced desktop hardware with their most comprehensive premium software package. Armed with four internal SHARC DSP chips, the QUAD architecture takes the entire processing load off your host computer's native CPU. This allows you to stack vintage compressors, tape emulations, and channel strips across multiple inputs during live tracking without causing audio drops or latency lag.
Operating over high-speed Thunderbolt 3 connectivity with dedicated low-latency PCIe drivers for macOS and Windows, the Apollo Twin X QUAD Gen 2 is both a mastering-grade audio converter and an advanced monitoring controller, offering pristine audio translation and professional studio routing workflow in a rugged, elegant desktop form factor.
Premium Studio+ Software Suite: A Boutique Outboard Rack:
The defining feature of the Studio+ Edition is its massive, curated software library containing over 50+ award-winning UAD plugin titles. Moving far beyond basic tracking tools, this bundle supplies an exhaustive array of legendary studio outboard gear modeled down to the component level:
Boutique Channel Strips & Preamps: Track through the iconic Avalon VT-737sp Tube Channel Strip, Manley Reference Microphone Preamp, and the historic Helios Type 69 Preamp & EQ.
Elite Dynamic Processors: Shape transients with the industry-standard Empirical Labs Distressor, dbx 160 Compressor/Limiter, and UA 175B/176 Tube Limiters, plus full collections of the Teletronix LA-2A and UA 1176.
Premium Space & Tape Emulations: Mix with the authentic warmth of the Studer A800 Multichannel Tape Recorder, Lexicon 224 Digital Reverb, and Capitol Chambers.
Boutique Virtual Instruments: Access flagship sound engines like the Moog Minimoog, Opal Morphing Synthesizer, and the pristine Ravel Grand Piano.
Elite Gen 2 Converters & Monitored Calibration:
The foundational audio path of the Apollo Twin X Gen 2 features UA's upgraded Gen 2 Elite-Class conversion. With a redesigned monitor DAC delivering a stunning 130 dB dynamic range and ultra-low distortion (-127 dB THD+N), this interface delivers clinical accuracy that rivals elite multi-channel rack units.
To solve environmental acoustic challenges, Gen 2 introduces Apollo Monitor Correction powered by Sonarworks®. This allows you to run precise SoundID Reference calibration profiles directly on the interface’s internal DSP hardware. The room correction happens with zero added latency, giving you a flat, honest listening environment across your studio monitors or headphones without taxing your computer.
Dual Unison Preamps with Assistive Auto-Gain:
The unit features two Unison-enabled microphone/line preamps and a front-panel Hi-Z instrument input. Rather than applying generic software EQ filters, Unison technology creates a physical, bi-directional hardware link that matches the exact impedance, gain-stage sweet spots, and analog circuit component interactions of classic Neve, API, and SSL hardware desks. To streamline your tracking workflow, the new Assistive Auto-Gain feature automatically checks and configures perfect input level gain structures across your channels in seconds, avoiding clipping while safeguarding clean headroom.
Advanced UAD Console App & Monitor Control:
The hardware serves as an advanced desktop monitor controller, featuring a built-in Talkback Microphone, assignable function keys for Alternate speaker switching, Mono summing, and Dimming utilities. Inside the updated UAD Console App, creators gain access to sophisticated hardware-driven Bass Management for seamless subwoofer integration and crossover control, alongside quick-recall Plug-In Scenes to instantly switch routing setups.
QUAD CORE SHARC DSP ENGINE: Four dedicated internal processing chips provide maximum UAD plugin power for heavy multi-mic tracking and mixing workloads.
GEN 2 ELITE-CLASS AD/DA CONVERSION: Completely updated conversion path delivers a vast 130 dB monitoring dynamic range with ultra-low distortion.
EXPANDED STUDIO+ BUNDLE: Includes over 50+ premium UAD plug-ins, featuring the Avalon VT-737, Empirical Labs Distressor, Lexicon 224, and Moog Minimoog.
DUAL UNISON MIC PREAMPS: Track in real time with near-zero latency through authentic, variable-impedance circuit models of Neve, Manley, and API hardware.
ASSISTIVE AUTO-GAIN: Instantly calculates and configures ideal input levels across your tracking channels with a single software click.
APOLLO MONITOR CORRECTION: Executes Sonarworks® SoundID Reference speaker and headphone calibration curves directly on internal DSP with zero latency.
HARDWARE BASS MANAGEMENT: Integrated subwoofer routing and crossover adjustment controls directly inside the UAD Console app.
THUNDERBOLT 3 SPEED: High-bandwidth connection protocol delivers rock-solid stability and ultra-low round-trip latency on modern Mac and Windows setups.
| 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 High-Bandwidth Protocol) |
| Audio Resolution | Mastering-grade 24-Bit / 192 kHz Gen 2 A/D and D/A Conversion |
| Onboard Hardware DSP | UAD-2 QUAD Core Processing (4 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 (3-4), 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) | 130 dB (Elite Gen 2 Monitor/Playback Converters) |
| Total Harmonic Distortion | -127 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 native support for LUNA, Logic Pro, Pro Tools, Ableton Live, Cubase, 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 QUAD 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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