Hey Guys, I recently checked with ASUS regarding the Essence ST and when it would be available in the USA. The official information is around mid October. If you have been waiting for these cards then you know they have been coming out very slowly and are very hard to find. To those unfamilair with this model, it was originally slated to be the PCI version of the highly popular Xonar Essence STX. ASUS changed the design by adding a improved master clocking circuit which lowers jitter and also added a pin header. This header allows connection to the H6 DAC expansion board which allows the card to be upgraded from a 2.0 card to full analog surround. For further information on this card, the Guru3d Audio Lab did a worlds first Sneak Peak of this new card awhile back which can be found here: Essence ST Sneak Peak Stay tuned for more information on this and other cards.