I have recently built myself a quite satisfactory HTPC (Zotac board, i2600 cpu, 8 gigs ram....) and it is connected via HDMI to a Samsung HD TV (LN40...) From there I use the analogue outputs to feed a Adcom preamp and amp (old models [i am old](GFA555). From there the speakers are Matrix 804's.
I am a classical music fanatic, and it is the only music I play on this system. (Main sources are DigitalConcertHall and MediciTV).
Question: Would I achieve any sound quality improvement by introducing a DAC along the line? Would a soundcard be as good?
Thank you in advance for your help.