HiFime 9018 Asynchronous High resolution USB DAC Compact size, audiophile Sabre ES9018K2M chip, asynchronous USB transfer, accepts all sample rates up to 384Khz/32bit No drivers required for Mac and Linux. Drivers available for Windows Output power: 1.05Vrms/2.94Vpp@1khz. 31mW @ 32ohm, SNR: 112.5dB @ 1kohm, 109dB @ 600ohm, THD: 0.0035% @32ohm, 20mW, crosstalk: 1kHz,10kOhm: -125dB, 1kHz, 32ohm -125dB Analog and digital (optical) output from 3.5mm connector. Power consumption: Standby 170-190mA. Max draw 270mA