Model Number: Hj-AMP02 Brand Name: Waki-tech Key Specifications/Special Features: It isportableheadphoneamplifierdesignedtoimprovethesoundqualityandvolumeofanydigitalaudioplayersuchasaMP3orMP4player,mobilephone,laptop,ornotebookItiswithavolumecontrolsoyoucanconnectdirectlytothelineoutofadigitalaudioplayerandcontrolthevolumedirectlyFeatures:ExclusivedesignDesignedforhighimpedanceandlowsensitivityheadphonesPortablestylishandeasytocarryanduseoutdoorVolumecontrolbyhighqualitypotentiometer

Switchforlow/highimpedancedevices

LEDindicatorsforworkingstatus,lowvoltageindicator,chargingindicator

Boostervoltagecircuitprovidesstrongerpower

Durablemetalcase,reducesthenoisecausedbyGSMmobilephones

Built-inLi-ionbattery,about20-30hoursplaytimeatnormalvolume

MicroUSBchargingport

Customizedcolorsavailable

Specification:

1. Materials: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. Suitabledevicesimpedance:8Ω~250Ω
9. Voltagebooster:providessteady5V DCoutputandstrongerpowerforhigh-impedancedevices
10. 3.5mminput/outputjacks
11. PowersupplyI:build-in450mAHLi-ionBattery,maxplaytime30hoursatnormalvolume
12. PowersupplyII:externalpowersupplythroughMicro-USBcable,5V/1ADC
13. Weight:68g
14. Dimension:80mmx50mmx16mm