Xduoo X3II player AK4490 Portable High-Res music player USB DAC Headphone Amplifier
Audiophile Store, Australia Stock, Free Shipping Authorized Resellers, Local Warranty, Full Support.
Parameters
Output power:210mw
Crosstalk:>75db
Battery:3.7V/2000mAh
Charging time:<3H(quick charge)
>5H(slow charge)
Frequency Response :20Hz~20kHz(±0.15dB)
S/N:≥114dB
THD+N:0.0015%@1KHZ（32Ω1kHz）
Battery life:about 13hours
size:102.5*51.5*14.9（mm）
Weight:112g 
