Recently picked up the Aune AR5000. How can I best take advantage of these?

I recently upgraded from a pair of Sennheiser HD599SE to the Aune AR5000 and I love them but I was wondering how I could best take advantage of these headphones.

I got a bundle that included a balanced cable and a USB-C cable. I know the balanced cable would be better but I don't have any way to plug that into my PC.

I'm mostly using my headphones for gaming and music. Any advice or suggestions would be great. My budget would be under $150 US for any other equipment.