Some users have recently had their accounts hijacked. It seems that the now defunct EVGA forums might have compromised your password there and seems many are using the same PW here. We would suggest you UPDATE YOUR PASSWORD and TURN ON 2FA for your account here to further secure it. None of the compromised accounts had 2FA turned on.
Once you have enabled 2FA, your account will be updated soon to show a badge, letting other members know that you use 2FA to protect your account. This should be beneficial for everyone that uses FSFT.
Sound cards are worth investment just for the improvement in audio quality.
I use a creative Z sound card, it provides power for my 880dt.
It really depends in your interests.
About the Creatives Z, I had gotten them at around release time. They do work as advertised.
The scout mode is handy for Counter:strike GO.
The 600 ohm amps powers my beyer 880dts very well...
The sound is excellent.