I have a 2nd Gen Ipod Nano with Shure e2c headphones. I have noticed some headphone amps on ebay like this one:

http://cgi.ebay.com/Micro-Cmoy-headp...QQcmdZViewItem

Would something like this improve or change my sound in anyway? I realize it would enable the sound to be louder but that isn't necessary for me. I would just like to know if it would improve what my e2c's can do.

Thanks!