Product code: Factory Audioengine DAC
high-performance DAC (digital-to-analog converter) for detailed, low-noise stereo sound built-in high-performance headphone amplifier (20 ohm to 300 ohm headphone impedance recommended) powered by USB connection — no need for external power supply when connected to a USB source (using optical input requires optional AC USB power adapter or connection to a computer's USB port) double regulated USB power ensures no USB bus power variations affect audio output compact design for factory portability. Will ship super fast!!.
high-performance DAC (digital-to-analog converter) for detailed, low-noise stereo sound built-in high-performance headphone amplifier (20 ohm to 300 ohm headphone impedance recommended) powered by USB connection — no need for external power supply when connected to a USB source (using optical input requires optional AC USB power adapter or connection to a computer's USB port) double regulated USB power ensures no USB bus power variations affect audio output compact design for factory portability. Will ship super fast!!.