I ordered this sound card to replace the overmatched onboard sound of my Z77 motherboards. Unfortunately, the audio output (green socket of the slot bracket) were within the first week on the mind. Should read: On the left ear, I shouted "noises". Other headphones confirmed this. Per front panel everything still works properly. I am sending this card therefore to Amazon back and am going to look at the competition and yet with the onboard sound to be satisfied. Fortunately, holding my GTX780 Asus so far properly and by my former Xonar D1 never disappointed me.