So i just installed a Xonar STX and hooked it up to my Z-5500 via a coax cable. But i miss the DD PL effects from the 6ch direct input(analog). These effect modes enable sound from all the speakers during music playback. Is it possible to enable the DD PL effects on the coax input, or is this an analog only feature, or is it something about the sound card? My display just reads DD Digital and the effects button do nothing, leaving me with 2.1 playback for music.