The E12 Mont Blanc from Fiio is a portable, rechargeable headphone amplifier for use with your laptop, tablet or smartphone. It is designed to provide a higher power, superior sounding headphone amp than your computer or portable device alone.

The E12 Mont Blanc uses a two-part OPAMP circuit for low-distortion audio reproduction. It is rechargeable via any computer, laptop or mobile device with a 5V USB port. Also, it is equipped with a gain adjustment, bass boost and a charging indicator.