Universal Audio Apollo Twin DUO MKII (Heritage Edition) 2x6 Thunderbolt Audio Interface w/ DUO Processing

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Key Info

This is a 2x6 Thunderbolt Audio Interface with Dual UAD DSP Processors. Comes with a plug-in bundle.

Heritage Edition

Universal Audio’s new Apollo Heritage Editions deliver a premium software suite of 5 or 10 award-winning UAD plug-in titles — including the full Collections from Teletronix®, Fairchild®, Pultec®, Helios®, and UA — conveniently packaged at significant savings.

These are the same UAD plug-ins that built UA's reputation for analog modeling over the past decade — making Apollo Heritage Editions the perfect choice for those looking to get the most accurate library of classic analog emulations anywhere, right out of the box.


  • UA 1176 Classic Limiter Collection
  • Teletronix® LA-2A Classic Leveler Collection
  • Pultec® Passive EQ Collection
  • UA 610 Tube Preamp & EQ Collection
  • UA Pure Plate Reverb

Overhauled Design

The Universal Audio Apollo Twin Duo MKII features a completely new design, with the next-generation Apollo A/D and D/A conversion revamped for improved dynamic range ultra-low THD. The 2x6 Thunderbolt configuration delivers exceptional clarity and depth when it comes to your recordings, retaining the natural harmonic qualities while bringing out the best from your source material. The clarity and warmth of the Twin Duo MKII can be found on hit recordings from Coldplay, Kendrick Lamar and more. The Dual realtime DSP on-board processors provide exceptional audio performance, allowing you to use a wide range of plug-ins, opening up a range of options for analog sound and added colour. The exterior of the interface has also seen a redesign, with its same familiar configuration now housed in a sleek, dark-grey finish that will match any studio setup.

Unison Mic Preamp Emulation Technology

Apollo Twin Duo MKII’s Unison technology produces one of the most sought-after tones in the world, delivering the authentic analog warmth and sound normally reserved for tube and transformer-based microphone preamps. The attention to detail brings out the best from your recordings, utilising the signature impedance, gain staging and component-level circuit behaviours to deliver the best possible audio performance on the market. The Unison technology lets you record at near-zero latency through a range of preamp emulations such as the UA 610-B Tube Preamp (included). The resulting tone is an authentic analog sound unmatched by other audio interfaces. The Unison technology is also found on the front panel Hi-Z instrument inputs, providing the best impedance and gain matching for guitar and bass amp models for the most popular manufacturers.

Controls & Connectivity

The superior build quality and premium-grade components of the Twin Duo MKII’s audio interface makes it perfectly suited to any studio or home recording environment, with its compact design making it highly portable. The unit itself features 2 premium Unison mic/line preamps as well as 2 line outputs and a front-panel Hi-Z instrument input and headphone output. This wide range of connectivity means you can capture studio-grade recordings for both vocals and instruments, allowing you to capture and track all your inputs with ease. 2 digital controlled analog monitor outputs provide full resolution sound at all listening levels, meaning you can hear every nuance even when listening at lower levels. There are also 8 additional channels of digital input via the Optical TOSLINK connection as well as improvements to the monitor functionality including monitor remote and upgrade controls.

Optimised Workflow

The ergonomic layout of the Apollo Twin Duo MKII, Thunderbolt is designed to improve your overall workflow as well as the monitoring functionality. New Mono, Mute, DIM and ALT monitor controls have been included, streamlining your monitoring process. A built-in talkback mic also allows you to communicate with your recording artists, allowing you to give them cues and other instructions on the fly. The unique scalability of UAD devices means you can combine up to four Apollo interfaces and up to six UAD-2 devices in total, allowing you to expand your I/O and DSP to meet your needs. Additionally, the Apollo Twin MKII comes complete with the Realtime Analog Classics UAD Plug-In bundle featuring Legacy version of the LA-2A Classic Audio Leveler, Pultec EQP-1A EQ, 610-B Tube Preamp EQ and a whole lot more. This wide range of studio-grade effects allows you to further improve your recordings, adding subtle overtones and compression as you require it.

What if I already own one or more of the Heritage Edition UAD plug‑ins?

No problem! You can choose your replacement UAD plug‑in(s) from an alternate list during product registration.


  • Desktop 2x6 Thunderbolt audio interface for Mac and Windows with next-generation 24-bit/192 kHz audio conversion
  • Available UAD-2 DUO Core Processing for tracking through vintage compressors, EQs, tape machines, mic preamps, and guitar amp plug-ins with near-zero latency*
  • Unison™ technology offers stunning models of classic tube and transformer-based preamps, guitar amps, and stompboxes
  • Includes access to LUNA Recording System for a fully-integrated, analog inspired Apollo workflow
  • Built-in talkback mic for communication with studio talent and recording slate cues
  • Improved monitor functionality including monitor remote functions and Mono, Mute, DIM, and ALT monitor controls
  • 2 premium Unison mic/line preamps; 2 line outputs; front-panel Hi-Z instrument input and headphone output
  • 2 digitally controlled analog monitor outputs for full resolution at all listening levels
  • Up to 8 channels of additional digital input via Optical TOSLINK connection
  • Includes the "Realtime Analog Classics" UAD plug-in bundle. Other UAD plug-ins sold separately.
  • Runs UAD Powered Plug-Ins via VST, RTAS, & AAX 64 in all major DAWs
  • Uncompromising analog design, superior components, and premium build quality
  • Free, industry-leading technical support — on the phone and online — from knowledgeable audio engineers

System Requirements


  • Thunderbolt 2 cable (sold separately)
  • 6 gigabytes available storage
  • Internet connection to download software and authorize UAD plug-ins
  • Compatible VST, Audio Units, RTAS, or AAX 64 plug-in host DAW software
  • Quad Core i7 or better processor recommended
  • PC computer with built-in Thunderbolt 3 port
  • Windows 10 (64-Bit Edition)
  • Qualified Thunderbolt 3 to Thunderbolt 2 adapter (sold separately)


  • Thunderbolt 2 cable (sold separately)
  • 6 gigabytes available storage
  • Internet connection to download software and authorize UAD plug-ins
  • Compatible VST, Audio Units, RTAS, or AAX 64 plug-in host DAW software
  • Quad Core i7 or better processor recommended
  • Apple Mac computer with available Thunderbolt port
  • macOS 10.12 Sierra, 10.13 High Sierra, 10.14 Mojave, or 10.15 Catalina
Model Name:
Apollo Twin DUO MKII (Heritage Edition)
Universal Audio

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