Audio Playthrough on Multiple Outputs PC

How to get Audio Play-through on multiple outputs. I am planning to connect 2 DACs connected to AMP using USB ports and then connect 3.5mm PC Headphone outlet to AMP for Dolby-surround. Is there a way to get Audio Playing on all three outputs at the same time. This will help me switch between three sources with simple help of the button on the AMP.



Here is the setup:


PC(3.5mm Jack) > Dolby Atmos for Headphones > THX-AAA-788

PC(USB-1) > Sennheiser GSX 1200 Pro > THX-AAA-788
PC(USB-2) > THX-AAA-788
 
How is Voicemeeter Banana


Does it provide Unprocessed clean output or does it Process the Audio being Output.



Because I plan to use Dolby Atmos for Headphones on 3.5mm Headphone out. If Voicemeter processes the Audio then Processing done by Dolby will be lost.