A few days ago I invested in the Sennheiser Momentum, mostly for mobile use. I would however like to hear if it's possible to use a USB-soundcard (I don't have any available PCI slots) to simulate 7.1 sound for them, so that I can replace my razer megalodon(the elements on them are getting a bit loose I think, I can hear them vibrate against something when there's bass). Is it worth it, or should I simply invest in a new all-in-1 system similar to megalodon?
I don't have a specific budget yet, but if possible, less than $100 would be nice (I live in Europe, so you'll have to add about 10% to the US price usually).
Thank you for recommendations!