The headphone i currently own is the sennheiser hd 558, and i am looking to upgrade my headset to something better for fps competitive console gaming. Based on the research i've done is that the akg k702 would need something better to power it better. I am also looking for a good amp or dac for my headphone's. I've been looking at the creative sound blasterx g5 7.1 would that be any good for these headphones. The console i own is the xbox one.