Key components historically included in the Ultimate 9 tier feature:

What (macOS or Windows) and DAW do you currently use?

: Historically, the Ultimate 9 bundle requires UAD-2 DSP hardware or an Apollo interface to run the plug-ins.

The UAD Ultimate 9 bundle is a comprehensive collection of almost every UAD plugin ever released up to that version (around late 2020–early 2021). It includes over , ranging from classic analog hardware emulations (Teletronix, Pultec, SSL, Neve, API, Manley, Lexicon, Studer, Ampex) to modern utilities, guitar amps, and mastering tools.