Built-in high capacity battery
Support charging over voltage protection
Support 16~600 Ω impedance earphone
Support output volume adjustment and bass adjustment
Support one 3.5mm headphone port and one 3.5mm input port

Type-c port for charging
Aluminum alloy material, full of texture
This is built-in battery portable HIFI headphone amplifier,which support charging and adjusting volume and bass.Using 3.5mm cable connect it to your PC,smartphone and game console, etc.it used to improve the volume and sound quality of headphones.
Input port:3.5mm()
Headphone port:3.5mm()
Charging port:Type-c
Built-in battery:3.7V/1400mA
Charging voltage:5V/500mA
Standby power:12mA
Maximum working current:55mA
Duration:≥24 hours
16Ωheaphone power :48mW
32Ωheaphone power:62mW
150Ωheaphone power:30mW
300Ωheaphone power:18mW
600Ωheaphone power:10mW
Maximum output -p:8.2Vp-p
:0.02%
Signal to noise ratio:100db
Frequency response:20hz~20Khz
talk: 100db
Sound balance:0.3db
Working environment temperature:-20 to +60℃
Colour:black
Material:Aluminum alloy

Package Contents:
1 x HIFI Headphone Amplifier
1 x 3.5mm audio cable
1 x Charging cable