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