I can clearly hear operation noises such as the hard disk reading. It is serious. Is it inherent for ipod 3? Or just a specific case for mine?

Buy a e5c. But find there is serious background noise together with my Total Bithead. What is the most valuable amp for e5c (quite and good drive)? I am considering the CORDA HA-1 MkII and Emmeline SR-71. What about others? Price don't excess $500 (student budget) I do need help. Thanks!