Earphone Amplifier Portable HIFI Audio 2 Stage Gain Switch Enhance Function Aux In Headphone Out For IPhone |

Description Earphone Amplifier Portable HIFI Amplifier Audio 2 Stage Gain Switch Enhance Function Aux In In Headphone Out For IPhone Feature:
Aluminum matte surface, stylish and compact design.
3.5mm AUX input and output.
Support 16-150Ω impedance, exquisite and portable, easy to carry, can output excellent sound without distortion.
High-quality audio, suitable for your mobile phone, MP3, MP4, laptop.
Noise reduction function, enhanced dynamic distortion, perfect pure stereo effect, high-definition voice and music sound quality optimization.

Specification:
Product name: Headphone amplifier
Product color: Black
Input/output port: 3.5mm audio port
Distortion: 0.004%
Signal to noise ratio: ≥120dB
Load impedance: 16-150Ω
Maximum power output: 250mW in Impedance 16Ω
Amp internal voltage: ±4V
Charging voltage: DC 5V
Frequency response: 20Hz-20KHz (±3dB)
Lithium battery capacity: 1000mAh
Ampere usage time: about 6 hours
Body size: 9.5x6.2x1.5cm/3.74x2.44x0.59in
Power cord length: 95cm/37.4in
Audio cable: 1m/3.28ft

Why is there a buzzing/hissing sound?
A: Please don't use it while charging, because it will cause current interference when charging. This is why there is noise.
After fully charged, disconnect the power and use the headphone amplifier.
This amplifier is not high enough for my bigger headphones. Why?
A: This headphone amplifier supports headphones with 16-150 ohm impedance. Please check the impedance of the headset.

Note:
Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!

Please allow 1-2mm measuring deviation due to manual measurement. 
Package:
1 X Amplifier
1 X Audio Cable
1 X USB Power Supply Line

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