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SMSL M2 Portable headphone amplifier external DAC decoder sound cardUSB Powered (silver) By

MINI PC USB decoder external sound carddont support battery power
using asynchronous audio transmission technology approved supports ASIO WASAPI and other drivers
along with line output optical signal output and headphone amplifier output
Ultra-small size thickness width like with the iphone 4 easy to carry
USB receiver chip SA9027 DAC decoder chip ES9023Headphone amplifier chip MAX9722