Thanks mga Sirs for the replies. I was finally able to extract DTS-HD MA from the VC, I did some reseach Guru3D said that the default CD driver for GTX 460 does not support HD audio. I downloaded the current driver from NVDIA and not only the audio improved but the PQ as well, meron nang "digital color vibrance" sa VC. Ok na ung tunog ng Pioneer 520 ko.