[Portable and Lightweight]-This headphone amplifier is designed to let you enjoy music anywhere;. Accessories:host+USB power cable+audio cable+manual. USB cable length:97cm. Support most high impedance 16-300Ω headphones,3.5mm AUX input and output,S/N ratio>100Db,THD+N=0.0003%,fully filter out noise and enjoy high quality audio.
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