In my home studio, I have a M-Audio Delta 1010 rack-mounted sound card. Outputs 1 / 2 are the stereo pair that is used for monitoring, to my Alesis monitors. But I sometimes need to monitor with headphones. There is no dedicated headphone-out on the sound card, so I understand that I need a headphone amp. I'm not looking for anything exotic, just good solid value. I've never actually owned a headphone amp in my life although I'm tempted to get one for work listening with my laptop.
Anyway, I need an amp that has a straight-through output, so I can daisy chain my powered monitors from it without having to unplug and replug them.
Any recommendations as a starting point?