LiNKFOR, Portable, HiFi, Earphone, Headphone, Amplifier, 1000mAH, With, Two-stage, gain, switch, For, 10-150, Ohm, AMP, 16-300, , 3, 5mm, AUX, Amp, SNR, 100Db, MP3, players, iPods, Laptops, Mobile, Phones, MP4, Computer, Phone, Mini, Bass, Noise, Audio, Amplifiers, Player, Laptop, Notebook, iPod, Channels, Ultra-compact, Stereo, with, 5pcs, 6, 35mm, adapters, 192kHz, Digital, Analog, aduio, Converter, DAC, Support, Volume, Adjustment