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Universal Audio Apollo Twin USB - Used  From UA

Open up pandora's box of classic preamp and processor emulations with the Apollo Twin Duo! Apollo Twin DUO with USB 3.0 instead of Thunderbolt interface, for use with Windows.  


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Universal Audio

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Manufacturer's Description from UA

Apollo Twin USB High-Resolution Desktop Music Production for Windows.

With its class-leading resolution and Realtime UAD Processing, Apollo Twin USB sets the standard for desktop music production for Windows-based systems. This 2x6 USB 3 audio interface allows you to record with near-zero latency through the full range of UAD Powered Plug-Ins — ingeniously merging classic analog tones with cutting-edge features.

Key Features

  • World-class 24-bit/192 kHz audio conversion
  • Realtime UAD Processing - track through vintage Compressors, EQs, Tape Machines, and Guitar Amp plug-ins with near-zero latency
  • USB 3 connectivity for Windows-based systems
  • Unison™ technology for stunning models of classic mic preamps and stompboxes
  • Includes UAD-2 DUO DSP Processing onboard
  • 2 premium mic/line preamps; 2 line outs; front-panel Hi-Z instrument input and headphone output
  • Digitally controlled analog monitor outputs for full resolution at all listening levels
  • Uncompromising analog design, superior components, and premium build quality throughout
  • Includes "Realtime Analog Classics" UAD plug-in bundle

Record and Mix with Stunning 24-bit/192 kHz Sound Quality

With the highest dynamic range and lowest noise of any desktop interface, Apollo Twin USB gives you stellar 24-bit/192 kHz sound and breathtaking clarity.

Its premium mic preamps and class-leading conversion translate into rich three-dimensional recordings with exceptional depth and punch. Digitally controlled analog monitor outputs provide full resolution audio at all listening levels — letting you create better mixes in real-world environments.

A Complete Analog Studio with Realtime UAD Plug-In Processing
Imagine having access to a classic analog recording studio, right on your desktop. Apollo Twin USB lets you record and mix through the full range of UAD Powered Plug-Ins — including vintage EQs, compressors, reverbs, tape machines and more — at near-zero latency, regardless of your audio software buffer size. The key to its analog magic is onboard UAD-2 DUO DSP Processing, which powers the UAD plug-ins while reducing the strain on your host CPU. To get you started, Apollo Twin USB includes the "Realtime Analog Classics" plug-in bundle.
Track Through Classic Preamps Using Unison™ Technology
Unison technology allows Apollo’sTwin USB’s mic preamps and front-panel DI to sound and behave like the world's most sought-after tube and solid state preamps, guitar amps, and stompboxes — including their all-important impedance, gain stage "sweet spots," and circuit behaviors. Based on breakthrough integration between Apollo’s analog inputs and its onboard UAD processing, Unison lets you track through a range of colorful emulations from Neve, API, and Marshall with amazing tone.
Professional I/O Connections
Apollo Twin USB is a 2x6 interface with two class-leading mic/line preamps, two analog line outputs, two digitally controlled analog monitor outputs, and up to eight additional channels of digital inputs via Optical connection. Its conveniently located Hi-Z instrument input and headphone jack allow you to capture inspiration the moment it strikes.
A Sleek New App
Console 2.0 is Apollo Twin USB’s software control interface. Its intuitive, analog console-style design provides realtime tracking and monitoring with UAD Powered Plug-Ins, Channel Strip presets, Drag & Drop functionality, dynamically resizable windows, and more.
Easy to Use with Any DAW
Apollo Twin USB is compatible with major DAWs, including Pro Tools, Cubase, Ableton Live, and more — allowing seamless integration no matter what recording software you use.
Universal Audio

About Manufacturer

Universal Audio Inc. was re-founded in 1999 by Bill's sons, James Putnam and Bill Putnam Jr., with two main goals: to faithfully reproduce classic analog recording equipment in the tradition of their father, and to design new digital recording tools with the sound and spirit of vintage analog technology. However, as Bill Jr. recounts, the genesis of "UA, part 2" is actually a bit more serendipitous.

Having grown up in the music industry, Bill Jr. and James ("Jim") Putnam naturally assumed that the music business is where they'd eventually end up. Jim, a touring musician and recording engineer, and their older brother Scott, a studio designer in Southern California, were the first to follow in Bill Sr.'s path. However, Bill Jr. took a more circuitous direction, working for a number of engineering companies before undertaking a doctorate in Electrical Engineering at Stanford University. It was at Stanford that Bill Jr. became closely involved in the Center for Computer Research in Music and Acoustics (CCRMA), specializing in signal processing. It was also at Stanford that Bill Jr. began to assemble a team of the best and brightest minds in the field — who continue to steer many of Universal Audio's engineering efforts to this day.

However, the precise event that led Bill and Jim to start (or "reinvent") Universal Audio in 1999 was unexpected. As Bill Jr. tells it, when Bill Sr. passed away in 1989, he and Jim were faced with the Herculean task of cleaning out their dad's workshop and storage areas. While going through Bill Sr.'s old test equipment, boxes of parts, bits and pieces of consoles, and half-cannibalized 1176 compressors, Jim came across their father’s old design notebook. The two spent the evening poring over his notes, realizing that this was the map to every technical problem their father had ever solved. It was at that moment that they decided to bring back Universal Audio and its classic products. 

Fast forward a decade. Now with nearly 80 employees and legions of new customers worldwide, UA is headquartered near the Silicon Valley, in Scotts Valley, California — where our classic analog gear is still hand-built, one unit at a time. The lengths we go to deliver the exact sound and performance of classic analog audio gear is unparalleled; in fact, the goal is for UA's modern units to perform identically to well-maintained units built decades ago. 

Of course, analog is only half the story. At Universal Audio, we employ the world's brightest DSP engineers and digital modeling authorities to develop our award-winning UAD Powered Plug-Ins platform, featuring the most authentic analog emulation plug-ins in the industry. Our DSP gurus work with the original hardware manufacturers — using their exact schematics, golden units, and experienced ears — to give UAD plug-ins warmth and harmonics in all the right places, just like analog.


Audio Interface

-Sample rates up to 192 kHz* at 24-bit word length

-Up to 10 x 6 simultaneous input/output channels

    --Two channels of analog-to-digital conversion via:

  • Two balanced mic/line inputs
  • One Hi-Z instrument input

   --Six channels of digital-to-analog conversion via:

  • Digitally-controlled stereo monitor outputs
  • Stereo headphone outputs
  • Line outputs 3-4

   --Up to eight channels of digital inputs via:

  • Eight channels ADAT optical with S/MUX for high sample rates, or
  • Two channels S/PDIF optical with sample rate conversion

-64-bit device drivers


Microphone Preamplifiers

  • Two high-resolution, ultra-transparent, digitally-controlled analog mic preamps
  • Front panel and software control of all preamp parameters
  • Low cut filter, 48V phantom power, 20 dB pad, polarity inversion, and stereo linking


  • Digitally-controlled analog monitor outputs maintains highest fidelity
  • Independently-addressable stereo headphone outputs
  • Independently-addressable line outputs 3-4 can be used for additional cue mix
  • Front panel control of monitor levels and muting

UAD-2 Inside

  • Two (DUO) SHARC DSP processors
  • Realtime UAD Processing on all analog and digital inputs
  • Same features and functionality as other UAD-2 devices when used with DAW
  • Includes UAD Powered Plug-Ins “Realtime Analog Classics” bundle
  • Complete UAD Powered Plug-Ins library is available online


Console application:

  • Enables tracking and/or monitoring with Realtime UAD Processing
  • Remote control of Apollo Twin features and functionality
  • Virtual I/O for routing DAW tracks through Console
  • Two independent stereo Auxiliary buses

Console Recall plug-in:

  • Saves Apollo Twin configurations inside DAW sessions for easy recall
  • Facilitates control of Apollo Twin USB's monitoring features from within the DAW
  • VST, RTAS, AAX 64, plug-in formats

UAD Meter & Control Panel application:

  • Configures global UAD settings and monitors system usage


  • Attractive and durable desktop form factor
  • Locking power supply prevents accidental disconnection
  • Easily updateable firmware
  • One year warranty includes parts and labor


System Requirements

Apollo Twin USB Systems

UAD Powered Plug-Ins version 8

  • Microsoft Windows 7 or 8.1, 64-Bit Edition
  • Available SuperSpeed USB 3 port*
  • Intel "i" series or Xeon processor
  • 6 gigabytes available storage
  • Internet connection to download software and authorize UAD plug-ins
  • Compatible VST, RTAS, or AAX 64 plug-in host DAW software


All audio specifications are typical performance unless otherwise noted, tested under the following conditions: 48 kHz internal sample rate, 24-bit sample depth, 20 kHz measurement bandwidth, with balanced inputs and outputs.


    -- I/O Complement

  • Microphone Inputs: Two
  • Analog Line Inputs: Two
  • Hi-Z Instrument Inputs: One
  • Analog Line Outputs: Two (independent mix buses)
  • Analog Monitor Outputs: Two (one stereo pair, independent L/R mix buses)
  • Headphone Outputs: One stereo pair (independent L/R mix buses)
  • Digital Input Port: (TOSLINK optical) One (ADAT or S/PDIF, selectable)
  • USB 3 Port: One

   -- A/D – D/A Conversion

  • Supported Sample Rates (kHz): 44.1, 48, 88.2, 96, 176.4, 192
  • Bit Depth Per Sample: 24
  • Simultaneous A/D conversion: Two channels
  • Simultaneous D/A conversion: Six channels
  • Analog Round-Trip Latency: 1.1 milliseconds @ 96 kHz sample rate
  • Analog Round-Trip Latency with up to four serial UAD Powered Plug-Ins via Console application: 1.1 milliseconds @ 96 kHz sample rate

-Analog I/O

   -- Line Inputs 1 & 2

  • Jack Type (combo mic/line balanced inputs): Female ¼” TRS Balanced
  • Dynamic Range (A–weighting): 117.5 dB
  • Signal-to-Noise Ratio (A–weighting): 117.5 dB
  • Total Harmonic Distortion + Noise: –108 dBFS
  • Common-Mode Rejection Ratio (CMRR): Greater than 60 dB (10’ cable)
  • Frequency Response: 20 Hz – 20 kHz, ±0.1 dB
  • Input Impedance: 10K Ohms
  • Gain Range: +10 dB to +65 dB
  • Maximum Input Level (@ Minimum Gain): 18 dBV
  • Maximum Input Level (@ Maximum Gain): –37 dBV
  • Stereo Level Balance: ±0.05 dB
   -- Microphone Inputs 1 & 2
  • Jack Type (combo mic/line balanced inputs): Female XLR Balanced (pin 2 positive)
  • Phantom Power (switchable per input): +48V
  • Dynamic Range (A–weighting): 118 dB
  • Signal-to-Noise Ratio (A–weighting): 118 dB
  • Total Harmonic Distortion + Noise: –110 dBFS
  • Equivalent Input Noise: –127 dB
  • Frequency Response: 20 Hz – 20 kHz, ±0.1 dB
  • Common-Mode Rejection Ratio (CMRR): Greater than 70 dB (10’ cable)
  • Default Input Impedance: 5.4K Ohms (variable via Unison preamp model)
  • Gain Range: +10 dB to +65 dB
  • Pad Attenuation (switchable per input): 20 dB (variable via Unison preamp model)
  • Maximum Input Level (@ Minimum Gain, with Pad): 23.8 dBV
  • Maximum Input Level (@ Maximum Gain, with Pad): –31.2 dBV

   -- Hi-Z Input

  • Jack Type: Female ¼” TS Unbalanced
  • Dynamic Range (A–weighting): 117 dB
  • Signal-to-Noise Ratio (A–weighting): 117 dB
  • Total Harmonic Distortion + Noise: –101 dBFS
  • Frequency Response: 20 Hz – 20 kHz, ±0.1 dB
  • Input Impedance: 1M Ohms
  • Maximum Input Level (@ Minimum Gain): 10 dBV
  • Maximum Input Level (@ Maximum Gain): –45 dBV

   -- Line Outputs 3 & 4

  • Jack Type: ¼” Female TRS Balanced
  • Dynamic Range (A–weighting): 118 dB
  • Signal-to-Noise Ratio (A–weighting): 118 dB
  • Total Harmonic Distortion + Noise: –107 dBFS
  • Frequency Response: 20 Hz – 20 kHz, ±0.1 dB
  • Stereo Level Balance: ±0.05 dB
  • Channel Separation: Greater than 120 dB
  • Output Impedance: 600 Ohms
  • Maximum Output Level: 18 dBV

   -- Monitor Outputs 1 & 2

  • Jack Type: ¼” Female TRS Balanced
  • Frequency Response: 20 Hz – 20 kHz, ±0.1 dB
  • Dynamic Range (A–weighting): 115 dB
  • Signal-to-Noise Ratio (A–weighting): 115 dB
  • Total Harmonic Distortion + Noise: –105 dBFS
  • Channel Separation: Greater than 118 dB
  • Stereo Level Balance: ±0.05 dB
  • Output Impedance: 600 Ohms
  • Output Gain Range: –96 dB to 0 dB
  • Maximum Output Level: 18 dBV
  • Operating Reference Level: +14 dBu, +20 dBu (selectable)

   -- Stereo Headphones Output

  • Jack Type: ¼” Female TRS Stereo (unbalanced)
  • Frequency Response: 20 Hz – 20 kHz, ±0.1 dB
  • Dynamic Range (A–weighting): 113 dB
  • Signal-to-Noise Ratio (A–weighting): 113 dB
  • Channel Separation: Greater than 110 dB
  • Total Harmonic Distortion + Noise: –101 dBFS
  • Stereo Level Balance: ±0.11 dB
  • Output Impedance: 10 Ohms
  • Output Gain Range: –INF to 0 dB
  • Maximum Output Power: 80 milliwatts into 600 Ohms

-Digital I/O

   -- S/PDIF
  • Connector Type: Optical TOSLINK JIS F05 (shared with ADAT)
  • Format: IEC958
  • Supported Sample Rates: (kHz) 44.1, 48, 88.2, 96
  • S/PDIF Input Channels: Two (Stereo L/R)
   -- ADAT
  • Connector Type: Optical TOSLINK JIS F05 (shared with S/PDIF)
  • Format: ADAT Digital Lightpipe with S/MUX
  • Supported Sample Rates (kHz): 44.1, 48, 88.2, 96, 172.4, 192
  • ADAT Input Channels @ 44.1 kHz, 48 kHz: 1 – 8
  • ADAT Input Channels @ 88.2 kHz, 96 kHz: 1 – 4 (S/MUX)
  • ADAT Input Channels @ 176.4 kHz, 192 kHz: 1 – 2 (S/MUX)
   -- Clock Synchronization Sources
  • Internal, S/PDIF, ADAT (digital clock sync source conditional per selected digital input type)
  • Power Supply: External AC to DC
  • AC Connector Type: Changeable blades (UL, VDE, UK, SSA, CCC)
  • AC Requirements: 100V – 240V AC, 50 – 60 Hz
  • DC Connector Type: Male plug, 2.1 mm x 5.5 mm, center positive
  • DC Requirements: 12 VDC, ±5%
  • Maximum Power Consumption: 12 Watts


  • Operating Temperature Range 32º to 95º Fahrenheit (0º to 35º Celsius)
  • Storage Temperature Range –40º to 176º Fahrenheit (–40 to 80º Celsius)
  • Operating Humidity Range 20% to 80%


   -- Dimensions

  • Width: 6.31”
  • Height: 2.60”
  • Depth, Chassis Only: 5.86”
  • Depth, Including Knob & Jack Protrusions: 6.20” 
  • Shipping Box: (Length x Width x Height) 8” x 8” x 5.5” (20.32cm x 20.32cm x 13.97cm)

   -- Weight

  • Shipping Weight (with box & accessories): 3.85 pounds
  • Weight (bare unit): 2.35 pounds

   -- Package Contents

  • Apollo Twin USB DUO Unit
  • External Power Supply with (4) changeable AC connectors supporting USA, Europe, UK, Australia, China
  • URL Card
  • SuperSpeed USB 3.0 cable