Thanks heaps for the replies, it looks like I'll stick with using the integrated amp (when I get it) with just some speakers, and get a soundcard for my computer and use the headphones through that.  Next time I'm buying headphones I'll look for something more suitable for the amp (higher...

Thanks for the response billybob_jvc - that cleared up my confusion on the soundcard/DAC issue.  I presume then that if I was to get an integrated stereo amp (with a headphone jack of course) that it would negate the need for a sound card due to the fact it would have a dac built in?  I don't...

So I just purchased a new set of Audio Technica phones (ATH M50s) after seeing the many positive reviews here and on other sites (thanks!), and I had a few questions regarding getting the best sound out of them.   First, I notice that they are quite sensitive and have low impedance (99 dB & 38...