dear friend
This is a refurbished FiiO X1 II
Appearance is about 93% new
The list includes:
X1 II*1
Cable * 1
TF Card 8g * 1
Not in the retail box
Model: X1 II
Built in lithium battery
Battery life: Audio can play for more than 8 hours
Display system
Screen characteristics: 320 × 240 TFT
Support audio formats:
MP3, WMA, WAV, OGG, APE, AAC
Adapted headphone impedance: 16-100 Ω
Volume control type: 100 level digital volume control
EQ adjustment: 7-stage EQ adjustment (± 6dB)
Display screen: TFT 320 × two hundred and forty
Bass adjustment: N/A
Treble adjustment: N/A
Digital audio output interface (coaxial): N/A
Left and right channel balance adjustment: 5 dB
USB DAC: N/A
Gain selection: N/A
Main controller: Junzheng 4760B, DAC chip: PCM5242, LPF: OPA2322, ear amplifier chip: ISL28291
Output power 1: ＞ 100mW (16 Ω/THD+N ＜ 1%)
Output power 2: ≥ 70 mW (32 Ω/THD+N<1%)
Output power 3: ≥ 8 mW (300 Ω/THD+N<1%)
Frequency response: 5Hz-60kHz (-3dB)
Signal to noise ratio: ≥ 113 dB (A-weighted)
Output impedance:<1 Ω (32 Ω load)
Channel separation: ≥ 72dB (1 kHz)
Distortion plus noise: ≤ 0.003% (1 kHz)
Peak output voltage: ＞ 4.0Vp-p
Maximum output current: ＞ 130 mA (reference value)
Other parameters
Specifications
ninety-seven × fifty-five point five × 12mm
Weight: 102g
Other performance
Power supply: DC5V 2A recommended
Battery capacity: 1800 mAh
Charging display: charging red light on, full green light on
Endurance time:>12 hours
Battery display: Yes
Charging time:<3 hours (DC5V/2A)
Frequency response curve 1
Test conditions: Play -5 dB sine signal, line output (10k Ω load)
Blue curve: Left channel Red curve: Right channel
Frequency response curve 2
Test conditions: Play -5 dB sine signal, maximum volume, headphone output (33 Ω load)
Blue curve: Left channel Red curve: Right channel
Distortion curve 1
Test conditions: Play -5dB sine signal, line output
Distortion curve 2
Test conditions: Play -5dB sine signal, headphone output
