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Universal Audio Apollo Twin X DUO Thunderbolt Audio Interface With Gen 2 Conversion | UAD Analog Classics Pro

Universal Audio Apollo Twin X DUO Thunderbolt Audio Interface With Gen 2 Conversion | UAD Analog Classics Pro

SoundPro Item: 146469 | Part Number: APTXDG2-STU

$1,299.00
$1,623.75 $1,299.00
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MSRP: $1,623.75 | MAP: $1,299.00

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  • Unison Preamp Technology Replicates Hardware Impedance And Gain Staging For True Analog Response
  • Gen 2 Apollo X Converters Deliver The Widest Dynamic Range And Lowest Distortion In Apollo History
  • DUO Core DSP Enables Real-Time UAD Plug-In Processing Without Native CPU Overhead
  • Apollo Monitor Correction Powered By Sonarworks Calibrates Monitors And Headphones For Accurate Playback
  • Auto-Gain Sets Input Levels Across Multiple Sources In Seconds To Eliminate Gain-Setting Delays
  • Bass Management Integrates A Subwoofer Into Your Monitor Setup For Full-Range Mix Referencing
  • Thunderbolt Expansion Supports Up To Four Linked Apollo Interfaces For A Scalable Studio System
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The Apollo Twin X DUO is built for serious music producers and recording engineers who demand studio-grade conversion and real-time analog processing in a compact desktop form factor. With elite-class Apollo X Gen 2 converters delivering 24-bit/192 kHz resolution and 129 dB dynamic range on the monitor outputs, this interface competes directly with standalone converter hardware that costs far more, while adding DSP-accelerated plug-in processing that no comparable desktop unit can match natively.

Two Unison mic preamps give engineers interactive emulation of classic hardware from Neve, API, Manley, and Avalon — not just tonal coloring, but actual impedance and gain-stage behavior that changes how your microphone and instrument respond. Combined with the front-panel Hi-Z input and optical ADAT/S/PDIF port, the Apollo Twin X DUO accommodates a full recording chain: vocals, guitars, outboard gear, and digital expanders all run simultaneously through a single Thunderbolt 3 connection. The UAD Console app centralizes monitor control, cue mixing, Auto-Gain, Bass Management for subwoofer integration, and Plug-In Scenes — making it the functional equivalent of a small analog console for DAW-centric workflows.

For producers working in LUNA, Pro Tools, Logic Pro, Ableton Live, or Cubase, the hybrid DSP plus native processing model allows complex plug-in sessions without the CPU overhead that limits native-only setups. The system scales via Thunderbolt linking of up to four Apollo interfaces, making it a viable foundation for a growing studio rather than a fixed endpoint. The UAD Analog Classics bundle included with this SKU delivers over 30 professional plug-ins covering compression, EQ, channel strips, reverb, tape saturation, and guitar amplifiers — a complete production toolkit from day one.

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Specifications

System - I/O Complement
Simultaneous Channel I/O (analog + digital)
10 x 6 (ADAT mode)
Microphone Inputs
2
Hi-Z Instrument Inputs
1
Analog Line Inputs
2
Analog Line Outputs (DC coupled)
2 (4 including Monitor outputs)
Analog Monitor Outputs (DC coupled)
2 (one stereo pair)
Headphone Output
1 stereo
Digital Audio Port (ADAT or S/PDIF, selectable)
1 input
Thunderbolt 3 Port
1 (Mac only: TB1/TB2 via Apple adapter)
A/D - D/A Conversion
Simultaneous A/D
2 channels
Simultaneous D/A
6 channels
Sample Rates (kHz)
44.1, 48, 88.2, 96, 176.4, 192
Bit Depth
24
Analog Round-Trip Latency
1.1 ms @ 96 kHz
Round-Trip Latency thru 4 UAD legacy plug-ins
1.1 ms @ 96 kHz (no added latency via Realtime UAD)
Microphone Inputs 1 & 2
Frequency Response
20 Hz - 20 kHz, ±0.04 dB
Dynamic Range
123 dB (A-weighted)
THD + Noise (1 kHz @ 24 dBu, -1 dBFS)
-115 dB (0.00018%)
Maximum Input Level (PAD on)
25 dBu
Default Input Impedance (variable via Unison)
5.4 kΩ
Gain Range
+10 dB to +65 dB
Pad Attenuation
20 dB (variable via Unison)
Phantom Power
+48V
Connector Type
XLR Female, pin 2 positive (Combo XLR/TRS)
Hi-Z Input (600 kΩ input termination)
Frequency Response
20 Hz - 20 kHz, ±0.05 dB
Dynamic Range
121 dB (A-weighted)
THD + Noise (1 kHz @ 11.4 dBu, -1 dBFS)
-110 dB (0.00032%)
Maximum Input Level (at min gain)
12.4 dBu
Default Input Impedance (variable via Unison)
1 MΩ
Gain Range
+10 dB to +65 dB
Connector Type
1/4" Female TS Unbalanced
Line Inputs 1 & 2
Frequency Response
20 Hz - 20 kHz, ±0.04 dB
Dynamic Range
122 dB (A-weighted)
THD + Noise (1 kHz @ 19.2 dBu, -1 dBFS)
-115 dB (0.00018%)
Maximum Input Level
20.2 dBu
Input Impedance
10 kΩ
Gain Range
+10 dB to +65 dB
Connector Type
1/4" Female TRS Balanced
Line Outputs 1 & 2
Frequency Response
20 Hz - 20 kHz, ±0.01 dB
Dynamic Range
127 dB (A-weighted)
THD + Noise (1 kHz @ 19.2 dBu, -1 dBFS)
-119 dB (0.00011%)
Maximum Output Level (ref @ +4 dBu)
20.2 dBu
Maximum Output Level (ref @ -10 dBV)
14.5 dBu
Output Impedance
100 Ω
Connector Type
1/4" Female TRS Balanced
Monitor Outputs L & R
Frequency Response
20 Hz - 20 kHz, ±0.04 dB
Dynamic Range
129 dB (A-weighted)
THD + Noise (1 kHz @ 19.2 dBu, -1 dBFS)
-120 dB (0.0001%)
Maximum Output Level
20.2 dBu
Output Impedance
100 Ω
Connector Type
1/4" Female TRS Balanced
Stereo Headphone Outputs
Frequency Response
20 Hz - 20 kHz, ±0.01 dB
Dynamic Range
124 dB (A-weighted)
THD + Noise (300 Ω load, 1 kHz @ 14.4 dBu, -1 dBFS)
-112 dB (0.00025%)
THD + Noise (600 Ω load, 1 kHz @ 14.8 dBu, -1 dBFS)
-114 dB (0.00019%)
Maximum Output Level (300 Ω load, 1 kHz, 0 dBFS)
15.4 dBu
Maximum Output Level (600 Ω load, 1 kHz, 0 dBFS)
15.8 dBu
Maximum Output Power RMS (300 Ω load, 1 kHz @ 15.4 dBu, 0 dBFS)
69 mW
Maximum Output Power RMS (600 Ω load, 1 kHz @ 15.8 dBu, 0 dBFS)
38 mW
Connector Type
1/4" Female TRS Stereo
Digital Input
Digital Audio Port (ADAT or S/PDIF, selectable)
1 input
Connector Type
Optical TOSLINK JIS F05
S/PDIF
S/PDIF Channels
1 stereo input
Format
IEC 958
Supported Sample Rates (kHz)
44.1, 48, 88.2, 96
ADAT
ADAT Channels
Up to 8 input channels
Format
ADAT Lightpipe with S/MUX
Supported Sample Rates (kHz)
44.1, 48, 88.2, 96, 176.4, 192
Channel Assignments @ 44.1/48 kHz
Channels 1-8
Channel Assignments @ 88.2/96 kHz
Channels 1-4
Channel Assignments @ 176.4/192 kHz
Channels 1-2
Clock Synchronization Sources
Internal, ADAT, S/PDIF
Conditional per selected digital input type
Electrical
Power Supply
External AC-to-DC Power Supply, Level VI compliant
AC Input Connector Type
IEC C8, non-polarized
AC Requirements
100V - 240V AC, ≈ 50 - 60 Hz, 1.2 A MAX
DC Connector Type
Male barrel plug, 2.1 mm x 5.5 mm, center positive
DC Requirements
12 VDC (±5%), 4.2 A
Maximum Power Consumption
15 Watts (when portable host computer not charging)
Environmental
Ambient Temperature Range
32º to 104º F (0º to 40º C)
Mechanical - Dimensions
Width
6.31" (160.34 mm)
Height
2.59" (65.81 mm)
Depth, Chassis Only
5.89" (149.59 mm)
Depth, Including Knob & Jack Protrusions
6.14" (156.10 mm)
Shipping Box (L x W x H)
6" x 8" x 8" (152 mm x 203 mm x 203 mm)
Mechanical - Weight
Shipping Weight (with box & accessories)
4.37 pounds (1.98 kg)
Weight (bare unit)
2.29 pounds (1.04 kg)
Whats included
Software Bundle
UAD Analog Classics Pro (80+ plug-ins)
Vocals & Pitch Correction
Topline Vocal Suite, Topline Key Finder
Channel Strips & Preamps (19)
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 Channel Strip Legacy, 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 (21)
API 2500 Stereo Bus Compressor, dbx 160 Compressor/Limiter, Empirical Labs EL8 Distressor, Fairchild 660, Fairchild 670, Fairchild 670 Legacy, Precision Buss Compressor, SSL G Series Bus Compressor, SSL G Series Bus Compressor Legacy, Teletronix LA-2 Classic Leveler, Teletronix LA-2A Gray, Teletronix LA-2A Silver, Teletronix LA-2A Legacy, Teletronix LA-2A Tube Compressor, Teletronix LA-3A, UA 1176 FET Compressor, UA 1176 Rev A, UA 1176AE, UA 1176LN Rev E, UA 1176LN Legacy, UA 1176SE Legacy
Equalizers (9)
Helios Type 69 Legacy EQ, Neve 1073 Legacy, Neve 1073SE Legacy, Precision Equalizer, Pultec EQP-1A Legacy, Pultec EQP-1A Passive, Pultec HLF-3C Passive, Pultec MEQ-5 Passive, Pultec Pro Legacy
Special Processing (9)
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 (1)
PolyMAX Polyphonic Synth
Delay & Modulation (8)
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 (6)
Lexicon 224 Digital Reverb, Ocean Way Studios Deluxe, Ocean Way Studios, Precision Reflection Engine, Pure Plate Reverb, UAD Sound City Studios
Mastering (3)
Precision Limiter, Precision Maximizer, Precision Multiband
Guitar & Bass (9)
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 (4)
Ampex ATR-102 Master Tape Extension, API Summing Extension, API Vision Console Emulation, Studer A800 Multitrack Tape Extension

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