Model Number: HJ-AMP02 Brand Name: Waki-tech Key Specifications/Special Features: HJAMP01 IsaportableheadphoneamplifierdesignedtoimprovethesoundqualityandvolumeofanydigitalaudioplayersuchasaMP3orMP4players,mobilephone,laptop,ornotebook.Itiswithavolumecontrolsoyoucanconnectdirectlytothelineoutofadigitalaudioplayerandcontrolthevolumedirectly!Features:Exclusive&originaldesignDesignedforhighimpedanceandlowsensitivityheadphonesPortablestyleandeasytocarryanduseoutdoorVolumecontrolbyhighqualitypotentiometer

Switchforlow/highimpedancedevices

LEDindicatorsforworkingstatus,lowvoltageindicator,chargingindicator

Boostervoltagecircuitprovidesstrongerpower

Durablemetalcase,reducesthenoisecausedbyGSMmobilephones

Built lionbattery,about20~30hoursplaytimeatnormalvolume

MicroUSBchargingport

Customizedcolorsavailable

Specification:

1. Material:Aluminum-alloycase,incustomizedanodicoxidationcolors
2. Chipsets:“FA-IC02”+NJM4580
3. Inputsensitivity:2V
4. Outputpower:900mW@16Ωload;450mW@32Ωload;65mW@250Ωload
5. Signaltonoiseratio:>=-100dB(Aweight)
6. THD+N:max.0.05%@1kHz,100mw,16Ω
7. Frequencyresponse:10Hz-100kHz@+/-3dB;20Hz-35kHz@+/-0.5dB
8. Suitabledevices’impedance:8Ω~250Ω
9. Voltagebooster:providessteady5VDcoutputandstrongerpowerforhigh-impedancedevices
10. 3.5mminput/outputjacks
11. PowersupplyI:buildin450mAHLiionbattery,max.playtime30hoursatnormalvolume
12. PowersupplyII:externalpowersupplythroughMicro-USBcable,5V/1ADc
13. Weight:68g