9. What earphones is the E12DIY suitable for driving?

A: The E12/E12DIY is best suited to headphones with higher power requirements, such as high-impedance or low-efficiency earphones / headphones, and most over-ear headphones.  If the E12/E12DIY is used to drive high-efficiency IEMs / earbuds, it becomes a matter of taste whether an improvement is perceived, and the main effect of the E12/E12DIY on such earphones would be a change in character.  If you will be listening with high-efficiency IEMs / earbuds, we recommend auditioning the E12/E12DIY before buying.  For locating a place to audition the E12/E12DIY, please refer to http://www.fiio.net/en/stores.