Topping NX3s

Measured：10.7cmx 6.6cmx 1.36cm
Weight： 157g(Unit only)
Color：Full black/Full silver
Power input：DC5V1A(PC's USB 0.5A is OK too)
Line In/Out：3 5mm
Headphone output：3 5mm
Battery capacity：2400mAh
Charge time：<4H
Playback time：>18H
Power LED：Blue light (it lights red when power is too low)
Charge LED：Light red (slow) or Light orange (fast) when NX4 DSD is charging; Light green when charge is completed.

THD+N
@A-weighting：
<0.0017% @ 1kHz Output=273mW(32Ω)
<0.0025% @ 20-20kHz Output=273mW(32Ω)
<0.0003% @ 1kHz Output=50mW(300Ω)
<0.0008% @ 20-20kHz Output=50mW(300Ω)

SNR 
@A-weighting: >120dB @ 1kH
Frequency Response：20Hz-200kHz(10.55dB)

Output Level：11.5Vpp @ 32ΩGain=L,Bass=OFF
15 Vpp @ 300ΩGain=L ,Bass=OFF
Noise：<25uVrms @ Gain=L
<6.5uVrms @ Gain=H
Channel Crosstalk：-90dB @1kHz
Channel Balance：0.04 dB
Gain：0dB/8 .8dB
BASS：0dB/4dB(70Hz)
Output Power：545mW x 2 @ 32Ω THD+N<1%
100mW x 2 @ 300Ω THD+N<1%
Adapter lmpedance：16-300Q