I'm on Win7 so I use Foobar with WASAPI but you can try ASIO. I'm glad that the SQ is improving. Have you tried any other sources to eliminate all possibilities?
By sources you mean? I have only the laptop as source. I will try my WD media player and play it through the denon AVR 1905. but i doubt there will any elevation in music quality since the receiver is more for movies than music.
ASIO isn't working in Foobar- i mean it asks for driver while installing.
regards,