Hello Head-fi people, first post here.
I'm about to buy a pair of Grado sr80i, but I was wondering that same exact question.
How do I know that I will be sold sr80i and not sr80 ?
If there is no apparent difference, maybe the specs are different?
I'm also wondering if an amp would make a substantial difference since I will listen to music 99.99% of the time on my laptop (plugged in the docking station actually). I read good reviews regarding the "NuForce uDAC2-HP"