Portable Headphone Amplifier
Us this Headphone Amplifier which make it Compact, Lightweight convenient to carry, can output remarkable sound without distortion.
High/Low gain switch for optimal performance of the headphones.

Input: 3.5mm AUX
Output: 3.5mm AUX
SNR: ≥120dB
Load Impedance: 16--300Ω
Frequency response: 20Hz-20kHz(±3dB)
More Than 15 Hours using Time
Charging voltage: DC5V

Headphone Amplifier Compatibility:
iPhone6, iPad，MP3，MP4 and Computers ect products suitable for 3.5MM headphone port.

Note:
Do not use it while charging, it is not safe, and the current will make noise.
Operation
Step1: Make sure to turn the VOL knob to the minimum.
Step2: Connect the input with audio source.
Step3: Connect the output with headset.
Step4: Turn the knob clockwise to turn on the power.
Step5: Wear headphone and adjust the volume.

Package Included
  1 x Headphone Amplifier
  1 x USB Power Cable
  2 x Audio Cable
  1 x User Manual