What is UADx?
UADx is Universal Audio’s new native plug-in product line that comes in VST3, Audio Units, AAX and LUNA formats. UADx versions of existing products have the same high quality sound as equivalent UAD-2 and LUNA plug-ins, with the added flexibility of running in any modern DAW, and with any audio interface.
How does UADx differ from UAD-2?
UADx plugins run on your computer's processor and therefore do not require that a UAD-2 device be connected to the computer to function.
On the other hand, UAD-2 plug-in processing is handled by UAD-2 device’s internal DSP accelerator cores. This allows for features like zero-latency monitoring (with Apollo interfaces) and reduces strain on your computer’s CPU. However, UAD-2 plug-ins require that a UAD-2 device be connected to the computer in order to use them.