Pros: Sounds 100 times better than onboard audio, portable, built in equalizer, nice interface.
Cons: None that I can think of
Well, this is my first amp and DAC, but I can tell you that if you have some decent headphones and are just plugging it straight in your PC, you're doing it terribly wrong!
It just sounds so much better with this lil' guy.
I got it with the cable to connect it to your iPod so that I can have awesome audio on the road too.
Maybe it'd be nice to be able to equalize the mids too, but you can just lower the treble and bass to raise the mids, technically.