User Manual
Apollo Twin MkII Hardware Manual Welcome2
A Letter from Bill Putnam Jr.
Thank you for deciding to make the Apollo Twin MkII High-Resolution Interface part 
of your music making experience. We know that any new piece of gear requires an 
investment of time and money — and our goal is to make your investment pay off. 
The fact that we get to play a part in your creative process is what makes our efforts 
meaningful, and we thank you for this.
In many ways, the Apollo family of audio interface products represent the best examples 
of what Universal Audio has stood for over its long history; from UA’s original founding in 
the 1950s by my father, through our current vision of delivering the best of both analog 
and digital audio technologies. 
Starting with its high-quality analog I/O, Apollo Twin MkII’s superior sonic performance 
serves as its foundation. This is just the beginning however, as Apollo Twin is the only 
desktop audio interface that allows you to run UAD plug-ins in real time. Want to monitor 
yourself through a Neve® console channel strip while tracking bass through a classic 
Fairchild or LA-2A compressor? Or how about tracking vocals through a Studer® tape 
machine with some added Lexicon® reverb?* With our growing library of more than 90 
UAD plug-ins, the choices are limitless. 
At UA, we are dedicated to the idea that this powerful technology should ultimately serve 
the creative process — not be a barrier. These are the very ideals my father embodied 
as he invented audio equipment to solve problems in the studio. So as you begin to 
incorporate Apollo Twin MkII into your creative process, we hope that the excitement and 
pride that we’ve built into it comes through. We believe Apollo Twin MkII will earn its way 
into your creative workflow by providing stunning fidelity, great ease-of-use, and rock-
solid reliability for years to come. 
As always, please feel free to reach out to us via our website www.uaudio.com, and via 
our social media channels. We look forward to hearing from you, and thank you once 
again for choosing Universal Audio.
Sincerely,
Bill Putnam Jr.
*All trademarks are recognized as property of their respective owners. Individual UAD Powered Plug-Ins sold separately.










