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Test condition:play -5 db sinusoidal signal,Line outputGeneral Specifications
Model/Number X1 Phone out (PO) 3.5mm headphone output jack
Color Available Silver, Gold, Black, Blue Headphone Impedance Range 16~100 Ω
Dimensions 96.7 mm×57.7 mm×14.1 mm Volume control type 100 levels digital volume control mode
Weight 106 g Bass Boost N/A
Display Screen TFT 320×240 Treble N/A
Analog Audio Output Jack 3.5 mm headphone output jack Balance 5 dB
Digital Audio Output Jack N/A Gain Selection N/A
USB DAC N/A Equalizer 7-band equalizer (±6dB)
Partial Performance Parameters for Line Output
THD+N <0.003% (1 kHz) SNR >110 dB (A-Weight )
Frequency Response 10 Hz~45 kHz (-3dB) Dynamic range >104  dB
Crosstalk >100 dB (10 KΩ/1 kHz) Line output Level >1.46 Vrms
Partial Performance Parameters for Headphone Output
Output Power 1 >100 mW (16 Ω/THD<1%) Output Impedance <2 Ω
Output Power 2 >65 mW (32 Ω/THD<1%) Crosstalk >70 dB (1 KHz)
Output Power 3 >8 mW (300 Ω/THD<1%) THD+N <0.004% (1 KHz)
Frequency Response 10 Hz~45 kHz (-3dB) MAX output voltage >4.2 Vp-p
SNR >110 dB (A-Weight) MAX output current >130 mA(For reference)
Power and Battery
Power
recommend DC5V 1A
Battery Capacity 1700 mAh
Charge Display red light indicates , green light turns on after fully charged Battery Display Yes
Battery Life ≥ 12 h  Charging Time <4 h
Battery Life Test Conditions
Screen

OFF

Load M3 open earbuds (27 Ω)
Volume 39 EQ OFF
Test File MP3 44.1kHz/16bit (download link)
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;

  AIFF: 192 kHz/24 bit;

  WAV: 192 kHz/64 bit;

  WMA 9.1 LOSSLESS: 48 kHz/24 bit;

  Apple Lossless: 192 kHz/24 bit;

Lossy compression:

  MP2、MP3、AAC、ALAC、WMA、OGG....

 

 

Frequency Response diagram of curves.
Test condition:VOL=MAX,  Lineout(10k ohms loaded)
Red curve: Left channel , Blue curve: Right channel

Frequency Response diagram of curves.
Test condition:Gain=High, VOL=MAX,Headphone output(33 ohms loaded)
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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