Fitting this Rolls brand Stereo headphone amp into my recording processes

[FattMusiek]

I recently aquired this Rolls brand Stereo headphone amp from a friend that apparently can be used as a monitoring system. My problem is I really don't know how to fit it into my mix of equipment. I use a Firepod, but I also have a Behringer mixer. My monitors play back through my Delta 44 card. What I'm trying to accomplish is to be able to be to use this device to play back audio through the 1-4 headphone jacks. I would just like to be able to have a simple monitoring system. The headphone amp has a stereo input jack; where should I plug that into? Would hooking my monitors up to the Firepod instead of the Delta 44 help (there is a headphone jack on the Firepod)? I apologize if I'm not creating a clear picture of what I want.

Thanks for putting up with yet another one of my dumb questions. Also, here is a link to what the headphone amp looks like:

http://www.amazon.com/exec/obidos/tg/detail/-/B0002BG2RM/102-8177075-8833700?v=glance

 

[FattMusiek]

Got the answer to my own question...sometimes doing it yourself pays off. I did post a continuation of this thread in the Mixing/Mastering section if you're interested.