This portable player lets you finely customize your headphone sound via a 7-band graphic EQ. MicroSD card storage is expandable up to 128GB to fit all of your favorite albums in one place. In addition to a headphone output, the X1 includes a 3.5-millimeter line out port to connect to external devices like your home stereo or another dedicated headphone amplifier. The 1700mAh battery can be charged via any USB connection and delivers up to 12 hours of use on a full charge. You can even customize the 2-inch color display with changeable color schemes to match your personal preferences.