Originally Posted by BumbleBee
the Titanium HD doesn't really have a dedicated headphone amp and the output impedance is pretty high.
regarding the Essence ST vs STX. the ST is supposed to have better clocks and it can work with the Asus Xonar H6.
there is an open box Essence ST on NCIX for $186. grab it.
For $199 I can grab it new from Direct Canada... I've been stung on open boxes before so id rather spend a few more dollars and know it's all good.