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SMSL M2 Portable headphone amplifier external DAC decoder sound card USB Powered(black) By
MINI PC USB decoder external sound card dont 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
