User's Manual

Apollo x4 Hardware Manual Welcome2
A Letter from Bill Putnam Jr.
Thank you for choosing this Apollo x4 audio interface to become a part of your studio.
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.
Universal Audio interfaces like Apollo x4 exemplify a commitment to craftsmanship that
we’ve forged over the past 60 years — from our original founding in the 1950s by my
father, Bill Putnam Sr., to our current mission combining the best of both classic analog
and modern digital audio technologies.
Starting with its high-quality I/O and superior A/D and D/A conversion, Apollo x4’s
superior sonic performance serves as its foundation.
This is just the beginning however, as Apollo x4 lets you power the full range of UAD
plug-ins in real time, including classic mic preamps, EQs, dynamics processors, reverbs,
guitar amps, and much more. With more than 100 acclaimed UAD plug-ins at your
fingertips, the sonic choices are limitless.*
At UA, we are dedicated to the idea that technology should serve the creative process,
inspiring our customers to go further. These are the ideals my father embodied with his
classic designs, and we like to think this spirit lives on today in products like Apollo x4.
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.