Neoteck, Portable, HiFi, Earphone, Headphone, Amplifier, Two-Stage, Gain, Switch, 3, 5mm, AUX, Input, Output, Professional, Mini, Audio, for, Phone, HIFI, With, 1, 2m, USB, Power, Cable, HDMI, RCA, and, Converter, with, Jack, Interface, 720P, 1080P, Support, PAL, NTSC, Older, Digital, Analog, Coaxial, SPDIF, Toslink, Stereo, L, R, 6, 35mm, 16-300, , Amp, For, MP3, MP4, Computer, Mobile, headphone, 1000mAH, Phones, Amplfiers, Aux, Port, Android, Music, Player, AMP, Hifi, 1500mAH, 5MM, Smart, Laptop