Sound card or my new onboard audio to drive my cans I just bought a Gigabyte z370 gaming 7, it has an ESS Saber Dac and Texas Instruments LME49720 AMP.   Use this with my DT990 250ohm or my old SoundBlaster Z sound card?    I like the clean look of not having the card in there and use the motherboard features I paid for, but only if it's better or at least the same. 