FiiO Q1 - Open Box, Acceptable but Missing part(s) (Used)

General Features:

• Portable USB, DAC and Headphone Amplifier
• Robust switches lead to high quality gain and bass circuits, for different amplifier settings to satisfy different listening needs
• All Metal Housing for effective Electromagnetic shielding
• USB Audio Decoding Supports up-to 9 G kHz / 24 bit
• Built-in Li-poly battery for up-to 30 hours of Continuous Playback
• Authorized Internet Dealer
• 90 Day Sonic Electronix Warranty

Product Specifications:

• Frequency Response: 20-20,000 Hz
• Recommended Headphone Impedance: 16 - 150 Ohm
• Battery Capacity: 1400 mAh
• Output Power:
• > 190 mW ( 32 ohm/THD+N , 1%)
• > 75 mW ( 150 ohm/THD+N , 1%)
• THD+N: < 0.005 % (1 kHz)
• Audio Input: Micro USB/3.5 mm Jack
• Volume Control: TOCOS Potentiometer, Bass Adjustment
• Weight/Mass: 3.5 oz (100g)
• Input Sensitivity:
• 4.3 Volts (Gain = L)
• 1.5 Volts (Gain = H)
• Gain:
• AUX IN: -7 dB / 4.5 dB
• USB IN: -3.5 dB / 8 dB