[Aiur]

Will headphones like: Audio Technica ATH-AD700 , A900, Denon AH-D2000 or the Sennheiser HD-555; benifit from an fiio E5 dac sourced from the "line out" jack of a x-fi extreeme notebook expresscard sound card?

is that jack a true "line out" jack?

also, would a asus U1 be a better sound card to get rather then the x-fi notebook one?

thanks guys