Description
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 Product weight: 160g 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.
1 X Amplifier
1 X Audio Cable 1 X USB Power Supply Line 
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