Quote:
Originally Posted by
ROBSCIX 
Line level.
Some newer Realtek onboard audio chips actually have "amplified" outputs in the sense that the output impedance is low, and they can be used for powering low impedance headphones. The maximum output voltage is still low, though, not much more than 1 Vrms.
All Xonar cards from the D1 and above have line outputs with 2 Vrms voltage and 100 Ohm impedance.