FiiO E10K USB DAC and Headphone Amplifier (Black) DAC ChipThe Internal DAC chip is a PCM102 and can handle PCM files up to 24-bit/96 kHz while improving audio quality via a linear filter, reduced delay and internal silence on changing tracks, and no phase shifts. LOW NOISE FLOOR  The unit has an optimized low-pass filter and selectable bass boost circuit that are designed for a low noise floor in all states. CONNECTION VARIETY  The variety of connections include a front-panel 1/8 headphone jack, a rear-panel 1/8 line output, and a rear-panel coaxial digital output, which allows you to send your digital audio to another destination. USB CONNECTION  Connects to your laptop via its micro USB connection, which also provides it with power. PORTABLE DESIGN  A sleek, brushed aluminum shell and chassis allow for durable, portable use.