hi,first post here. i'm planning to buy a headphone amp that i can carry anywhere with me. i just want to know if it is really a necessity to have one and will it change the sound quality. i have a grado sr80i headphone and my main player is my 4th gen ipod. i'll be buying a cowon player and upgrading my headphone from the sr80i that i have to a Grado SR325i or a Grado SR225i within a couple of months from now.
Edited by captcj - 10/21/13 at 11:03am