So I get crackling noises in my hyperx clouds now and for a while now and was looking to upgrade them and even get the setup external so I settled on the 990s and was looking for something not to break the bank but to power them. I was looking at the magni 2 but is that enough? Do I need a dac and what dac if so a dac that can suffice please. I have a Asus z97-a usb 3.1 mobo. Any help is appreciated as I want something to not break the bank or even buy something I can't use or power them properly.