Integrated Amps with a Headphone Input

Anthem 225, $1,500.

In many cases, the headphone jack is powered by a seperate and much inferior chip rather than from the audio output of the amp itself. Those who are interested in getting the best headphone performance should check with the manufacturer of their chosen amp as to the quality of the headphone output.

So would I be better off just adding a headphone amp to my system?

11-20-11: Houstonjazzfan
So would I be better off just adding a headphone amp to my system?
If you are mainly after a good headphone amp the answer is yes. There is no doubt that most suggestions above would better your old yammy as an amp/pre amp combo.

See my comment on the Portal Panache. Also the Leben has a really good internal headphone amp. Research those two, and see if they will work with the speakers and headphones you are using. Try the Headfi forum to look at headphone compatability.