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Universal Audio Apollo 8 Duo Thunderbolt Audio Interface

Model: Apollo 8 Duo

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About: Universal Audio Apollo 8 Duo Thunderbolt Audio Interface

Apollo 8 is an elegant update to one of the world’s most popular professional audio interfaces — delivering enhanced sound with the tone, feel, and flow of analog recording. This 18 x 24 Thunderbolt 2 interface offers genuine UA analog design, and next-generation A/D and D/A conversion, putting class-leading audio quality in a sleek new package.
Built on UA's 50 year legacy of analog design excellence, Apollo 8 also features powerful UAD-2 QUAD or DUO processing and four onboard Unison™ mic preamps, delivering sonic performance that surpasses anything in its class.

Realtime UAD Plug-In Processing for Tracking, Mixing, and Mastering
Imagine having a classic analog studio, in single rack space. Apollo 8 lets you record through UAD Powered Plug-Ins — including vintage EQs, compressors, reverbs, tape machines and more — at near-zero latency, regardless of your audio software buffer size. With award-winning UAD plug-ins from Ampex, Lexicon, Neve, Manley, Roland, SSL, Studer, and more,* Apollo 8 serves up authentic analog tone and warmth.

The key to its analog sound is onboard UAD-2 DUO or QUAD DSP Processing, which powers the UAD plug-ins while reducing the strain on your host computer.

Apollo 8 comes bundled with “Realtime Analog Classics Plus” suite of UAD plug-ins. From there, you can choose from a vast and expanding collection of plug-ins in the UA Online Store.

Four Mic Preamps with Unison™ Technology
Apollo 8 comes equipped with four Unison-enabled mic preamps, letting you track projects with colorful mic preamp sounds from Neve, API, and Universal Audio. An Apollo breakthrough, Unison technology nails the tone of these sought-after tube and solid state mic preamps — including their impedance, gain stage “sweet spots,” and component-level circuit behaviors.

The secret to Unison is its hardware-software integration between Apollo’s mic preamps and its onboard UAD-2 processing. Simply place a selected tube or solid state preamp plug-in on your desired mic input, and record in real time through stunning emulations like the bundled UA 610-B Tube Preamp plug-in, or the Neve 1073 and API 212L.

Impedance and Gain Matching
Apollo 8 is further enhanced by adding Unison technology to its front-panel Hi-Z instrument inputs, giving you dead-on impedance and gain matching for new stompbox models like the Ibanez Tube Screamer TS808.

Improved Monitoring and Workflow
Apollo 8 features a host of front-panel upgrades over the original Apollo, including Alt Speakers, Dim, and Mono functions as well as input and output metering capabilities.

Key Features

  • Next-generation Apollo A/D and D/A conversion for professional music production
  • Onboard UAD-2 QUAD or DUO Core DSP allowing Realtime UAD Processing
  • 4 Unison™-enabled mic preamps for tracking through preamp emulations from Neve, API, and Universal Audio*
  • 18 x 24 Thunderbolt 2 audio interface for Mac with powerful Console 2.0 software control
  • Cascade up to 4 Apollo interfaces and 6 UAD devices total over Thunderbolt (Mac)
  • Convenient front panel monitoring functions including Alt Speakers, and assignable Dim or Mono
  • Includes “Realtime Analog Classics Plus” plug-in bundle
  • World class UA analog design, superior components, and premium build quality

Audio Interface

  • Sample rates up to 192 kHz at 24-bit word length
  • 18 x 24 simultaneous input/output channels:
  • Eight channels of analog-to-digital conversion via mic, line, or high-impedance inputs
  • 14 channels of digital-to-analog conversion via:
    • Eight mono line outputs
    • Stereo monitor outputs (switchable to fixed line outputs)
    • Two stereo headphone outputs
  • 10 channels of digital I/O via:
    • Eight channels ADAT Optical Lightpipe I/O with S/MUX for high sample rates
    • Two channels coaxial S/PDIF I/O with sample rate conversion
  • Two Thunderbolt 2 ports facilitates daisy-chaining of other Thunderbolt devices
  • Cascade up to 4 Apollo interfaces and 6 UAD devices total over Thunderbolt (Mac)

Microphone Preamplifiers

  • Four high-resolution, ultra-transparent, digitally-controlled analog mic preamps
  • Unison™ technology for deep integration with UAD preamp and pedal plug-ins
  • Front panel and software control of all preamp parameters
  • Switchable low cut filter, 48V phantom power, pad, polarity inversion, and stereo linking


  • Stereo monitor outputs (independent of the eight line outputs)
  • Digitally-controlled analog monitor outputs maintains highest fidelity
  • Front panel control of monitor levels and muting
  • Two stereo headphone outputs with independent mix buses
  • Independent front panel volume controls for headphone outputs
  • Front panel pre-fader metering of monitor bus levels
  • S/PDIF outputs can be set to mirror the monitor outputs
  • Up to two alternate stereo monitor outputs selectable via front panel or Console software
  • Assignable front panel monitor function switch for alternate speakers, dim, & mono

UAD-2 Inside

  • DUO model features two SHARC® processors
  • Realtime UAD Processing on all analog and digital inputs
  • Same features and functionality as other UAD-2 devices when used with DAW
  • Can be combined with other UAD-2 devices for increased mixing DSP
  • Includes UAD Powered Plug-Ins “Realtime Analog Classics Plus” bundle
  • Complete UAD plug-ins library is available at the UA online store is a Canadian authorized Universal Audio retailer.

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