Bluetooth HIFI Headphone Amplifier Amp 3.5mm HiFi Stereo Audio Out Portable Headphones Amplifiers For Earphone

Bluetooth HIFI Headphone Amplifier Headphones Amp 3.5mm HiFi Stereo Audio Out Portable Headphones Amplifiers For Earphone Product Introduction: 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 can connect to Bluetooth devices.  It used to improve the volume and sound quality of headphones. Product Features: l Built-in high capacity battery l Support charging overvoltage protection l Support high and low impedance earphone switch l Support 16~600 Ω impedance earphone l Support output volume adjustment and bass adjustment l Support one 3.5mm headphone port and one 3.5mm input port l Support Bluetooth connection l Type-c port for charging l Aluminum alloy material, full of texture Product Specifications: Input port......................................................................3.5mm(TRS) Headphone port............................................................3.5mm(TRS) Charging port............................................................................Type-c Bluetooth Version......................................................................BT 5.0 Built-in battery.................................................................3.7V/1400mA Charging voltage.................................................................5V/500mA Standby power............................................................................38mA Maximum working current.........................................................250mA Duration................................................................................≥6 hours 16Ωheaphone power .............................................................110 mW 32Ωheaphone power..............................................................105 mW 150Ωheaphone power..............................................................6 5mW 300Ωheaphone power.............................................................35 mW 600Ωheaphone power.............................................................20 mW Maximum output Vp-p.............................................................9.9Vp-p THD+N.......................................................................................0.02% Signal to noise ratio....................................................................100db Frequency response.......................................................20hz～20Khz Cross talk...................................................................................100db Sound balance............................................................................0.3db Bare size.............................................................104.5x63.5x16.5mm Bare weight.............................................................................146.5 g Working environment temperature...................................-20 to +60℃ Shell material...............................................................Aluminum Alloy Package Content: 1：HIFI Headphone Amplifier........................................................1 pcs 2：3.5mm Audio Cable..................................................................1 pcs 3：Charging Cable........................................................................1 pcs 4：User Manual.............................................................................1 pcs