NikKTech takes a look at the Creative Sound Blaster Z SE High-Performance PCI-E Gaming and Entertainment DAC A quote from the article:

It may have taken Creative just over 8 years but the new and updated Sound Blaster Z SE is here and today I'll be putting it through my usual tests to see just how well it performs compared to other PCI-E sound cards also currently available in the market.

  Creative Sound Blaster Z SE High-Performance PCI-E Gaming and Entertainment DAC Review