He said "X-Fi Titanium", not "X-Fi Titanium HD" (very different cards), though I would be very surprised if the latter wouldn't have dedicated headphone amp circuitry, just because the Auzentech X-Fi Forte was released beforehand, allegedly has a dedicated headphone amp, and the Titanium HD's targeting the same segment of audiophiles who might also be into gaming.
Then again, maybe they expected the buyers to have their own dedicated headphone amps.