I order a lot of stuff from Thomann and I've to say they are awesome.
I first order a Focusrite to connect my 2 monitors. Focusrite, if you google, Reddit mostly, is FULL of issues, the worst I would say if you are using a PC and not a laptop, Win 10/11 based. Constantly disconnecting, audio glitches, bad performances.
A friend of mine has the Evo 4, and I clearly ordered the Evo 8 and it's a BEAST.
I connected the Monitors to speakers 3,4, and the headphones to Output 1. By doing so, I can easily control Monitor's volume and Headphones volume, having audio coming out from both.
Just a heads up: don't get scared if some issue happens when installing drivers. If PC fails, restart it, probably there's some app conflict. Drivers install instantly and then plug in the Evo 8. Everything will work perfectly.
If you have issues, check hardware device properties listing all PC devices. update your chipset and download the latest thunderbolt motherboard drivers and then everything will work.
Because Focusrite creating conflicts with Win 11, I had to reset my whole PC. Never again. Evo 8 just installed perfectly. Works well.
Just connect your monitors to output 3,4 and headphones to 1,2 and you'll be super ready to rock 'n roll!