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General Specifications
Model/Number X3 Phone Out (PO) 3.5 mm headphone output jack
Color Available Black Headphone Impedance Range 16~300 Ω
Dimensions 109 mm×55 mm×16 mm Volume Control Type 120 levels digital volume control mode
Weight 122 g Bass Boost -10 dB~+10 dB
Display Screen TFT 320×240 Treble -10 dB~+10 dB
Analog Audio Output jack 3.5 mm headphone output jack Balance 5 dB
Digital Audio Output jack 3.5 mm headphone output jack Gain Selection 3.5/9.5 dB
USB DAC Supports up to 192 kHz/24 bit    
Partial Performance Parameters for Line Output
THD+N <0.005% (1 kHz) SNR >108 dB (A-Weight)
Frequency Response 20 Hz~20 kHz Dynamic range >103 dB
Crosstalk 90 dB (10 kΩ/1 kHz) Line Output Level >1.7 Vrms
Part of the Performance Parameter of Phone out
Output Power 1 540 mW (16 Ω/THD+N<1%) Output Impedance <0.3 Ω
Output Power2 >270 mW (32 Ω/THD+N<1%) Crosstalk 75 dB (1 kHz)
Output Power3 >30 mW (300 Ω THD+N<1%) THD+N <0.005% (1 kHz)
Frequency Response 20 Hz~20 kHz MAX Output Voltage >8 Vp-p
SNR >105 dB (AUX IN) MAX Output Current  >250 mA(For reference)
Power and Battery
Power

 Recommend DC5V 2A

Battery Capacity 3000 mAh
Charge Display Red light indicates , green light turns on after fully charged Battery Life >10 h (firmware un-upgrated)
Battery Display Yes Charging Time <4 h
Audio Format Supported
Lossless:

APE (Fast): 192 kHz/24 bit;

APE (Normal): 96 kHz/24 bit;

APE (High): 96 kHz/24 bit;

FLAC: 192 kHz/24 bit;  

WAV:192 kHz/64 bit;

WMA 9.1 LOSSLESS: 96 kHz/24 bit;

Apple Lossless: 192 kHz/24 bit;

Lossy compression: MP2、MP3、AAC、ALAC、WMA、OGG... ...

 

 

Frequency Response diagram of curves.

Test condition:play -5 dB sinusoidal signal, headphone output

Red curve: Left channel , Blue curve: Right channel

Frequency Response diagram of curves.

Test condition:play -5 dB sinusoidal signal,Line output

Red curve: Left channel , Blue curve: Right channel

Distortion diagram of curves.

Test condition:play -5 dB sinusoidal signal, Line output

Distortion diagram of curves.

Test condition:play -5 dB sinusoidal signal, headphone output

 

 

 

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