I have saved enough to invest in a pair of good headphones. I am considering Grado SR80, SR325 and RS-2. Where can I audition these phones physically before buying one? I live in a Chicago suburb. Unfortunately (and surprisingly) Grado doesnt have any dealer info on their website.
Also, if I am spending in tune of $500 on a pair of RS-2, is it also required to buy a headphone amp to be able to enjoy the headphone's true capability?