iBasso USB-DAC portable headphone amplifier D2 + Hj Boa

Specifications:
Publisher:Esther International
Frequency response: 10 Hz ~ 100 kHz,-0.5dB（ AMPS)
S/n ratio: 115 dB （ amplifier)
Digital input: USB: Max 192 Maximum output: 125mW+125mW （ 16 Ω ）
Power supply: built-in lithium polymer battery
Battery duration: 20 hours * by the terms of use will be shorter if you.
Charging time: approx. 3 hours
Accessories: USB cable, connection cable, USB flash drive built-in drivers for Windows
Dimensions and weight ：W51×H21 x D 92 mm, 120 g
Headphone amplifier
ï½¥Interface: USB1.1
ï½¥3.5mm stereo mini jack x1: input terminal
ï½¥3.5mm stereo mini jack x2: output terminal
ï½¥Color: Black