X7 Mark II_parameters

X7 Mark II

Main Unit
Name / Model No.	X7 Mark Ⅱ (FX7221)	Operating System	Deeply customized Android 5.1.1
CPU Model	RK3188	No. of cores	4
CPU operating frequency	1.4GHz	DAC	ESS9028 PRO
Keyboard	Virtual QWERTY keyboard	Input method	Touchscreen
Special features	Dual Android / Pure Music operating modes, symmetrical remappable keys, USB DAC, docking connector, etc.	User Interface	Android 5.1.1 / FiiO Music
Chips used	SoC: RK3188， DAC：ESS9028 PRO, LPF: OPA1612x2, OP: Customized OPA926x2
Connectivity
WiFi	5GHz/2.4GHz IEEE802.11 b/g/n standards supported	Bluetooth	Bluetooth V4.2，aptX supported
USB	Micro USB2.0
Display screen
Display size	3.97 inches	Number of colours	16.7 million colors
Display type	IPS TFT	Viewable angle	178°
Resolution	480×800	Pixel density	233 ppi
Touchscreen	Yes
Storage
RAM	2GB	Total ROM	64GB
Storage expansion type	Micro SD	ROM available to user	About 55GB
Maximum storage expansion	512GB (256GB x 2)
Buttons and ports
Buttons	Side buttons + side volume wheel+ touchscreen	Custom key mapping	N/A
Headphone out	3.5mm standard headphone output jack	Balanced output	Supported (2.5mm balanced headphone jack)
Line out/Digital Coaxial out/Optical output	Standard 3.5mm port (shared LO/Coaxial out)	USB connection	Micro USB2.0 (charging / data transfer / docking function / USB DAC)
General
Color	Titanium	Dimensions	about 128.7mm(H)×67.2mm(W)×15.5mm(D)
Weight	about 212g	Volume control	120 steps +/- button control (via analog-domain controller
Recommended headphone impedance	16~150 Ω (Headphone out)	Equalizer	10-band EQ (±6dB), 9 presets+custom preset, ViPER Effect
Recommended headphone impedance	16~300 Ω (Balanced out)	Equalizer	10-band EQ (±6dB), 9 presets+custom preset, ViPER Effect
Bass boost	N/A	Treble boost	N/A
Balance control	10 dB	Gain control	Low/High
USB DAC	Up to 192kHz/24bit supported
Power specifications
USB power adapter	DC 12/1.5A, 9V/2A, 5V/2A recommended	Battery	Internal 3800 mAh High-voltage quick charging Li-polymer battery
Charging indication	via LCD display and pulse LED	Charging time	＜100 min (DC 12V/1.5A)
Charging indication	via LCD display and pulse LED	Charging time	＜2.5 h (DC 5V/2A)
Battery indication	Yes (accurate battery % readings)
Battery Life & Test Conditions
3.5mm headphone output：>8 h
Volume	62	Gain	Low
Load	M3 open earbuds (27 Ω)	Screen	OFF
Test File	MP3 44.1kHz/16bit (Download link)	EQ	OFF
2.5mm TRRS balanced headphone output：>7 h
Volume	51	Gain	Low
Load	32Ω	Screen	OFF
Test File	MP3 44.1kHz/16bit (Download link)	EQ	OFF
Others
Firmware Upgrade	Supported both via zip file (inernal memory or external micro SD card) and OTA (*The product uses GPLv2 compliant firmware.)	Font size	Changeable
Third-party apps support	No limit (recommended to install the apps listed on FiiO Market)
Line output specifications
THD+N	＜0.0008% (1 kHz/10kΩ)	SNR	≥119 dB (A-weighted)
Frequency response	5 Hz~70 kHz（-3dB）	Dynamic range	>114 dB
Channel separation	≥103 dB (1 kHz)	Line level	＞1.8Vrms
Headphone out specifications (3.5mm headphone out jack)
Output power 1	≥200 mW（16Ω / THD+N＜1%)	Output impedance	＜1.2Ω (32Ω loaded)
Output power 2	≥150 mW（32Ω /THD+N＜1%)	Channel separation	≥73 dB (1 kHz)
Output power 3	≥17 mW（300Ω / THD+N＜1%)	THD+N	＜0.003% (1 kHz)
Frequency response	6 Hz~60 kHz（-3dB）	Peak output voltage	＞6 Vp-p
SNR	≥116 dB (A-weighted)	Max. output current	＞150mA (For reference)
Balanced headphone out specifications (2.5mm TRRS headphone out jack)
Output power 1	≥380 mW（16Ω / THD+N＜1%)	Output impedance	＜1.7Ω (32Ω loaded)
Output power 2	≥400 mW（32Ω /THD+N＜1%)	Channel separation	≥97 dB (1 kHz)
Output power 3	≥63 mW（300Ω / THD+N＜1%)	THD+N	＜0.003% (1 kHz)
Frequency response	6 Hz~60kHz（-3dB）	Peak output voltage	＞10 Vp-p
SNR	≥119 dB (A-weighted)	Max. output current	＞150 mA (For reference)
File format support
Lossless:	DSD：DSD64/128/256（“.iso”,“.dsf”,“.dff”）
	DXD：352.8kHz
	APE FAST/High/Normal：384kHz/24bit（MAX）
	APE Extra High：192kHz/24bit（MAX）
	APE Insane：96kHz/24bit（MAX）
	Apple Lossless：384kHz/32bit（MAX）
	AIFF：384kHz/32bit（MAX）
	FLAC：384kHz/32bit（MAX）
	WAV：384kHz/64bit（MAX）
	WMA Lossless：96kHz/24bit（MAX）
Lossy compression:	MP3, AAC, WMA, OGG...

继续了解

X7 Mark II 图集

Distortion diagram of curves 1.

Line out - Test condition: play -5 dB sinusoidal signal

AM3A平衡耳机输出部分性能参数（2.5mm）

输出阻抗
声道分离度
失真加噪声
峰值输出电压
最大输出电流

自定义

＜1.7Ω（32Ω负载）
≥97 dB (1 kHz)
＜0.003% (1 kHz)
＞10 Vp-p
＞150 mA （参考值）

≥380 mW（16Ω / THD+N＜1%)
≥400 mW（32Ω /THD+N＜1%)
≥63 mW（300Ω / THD+N＜1%)
6 Hz~60 kHz（-3dB）
≥119 dB (A计权)

输出功率1
输出功率2
输出功率3
频率响应
信噪比

自定义

无损：

MP3、AAC、WMA、OGG等格式

有损压缩：

DSD：DSD64/128（“.iso”,“.dsf”,“.dff”）
DXD：352.8kHz
APE FAST/High/Normal：384kHz/24bit（MAX）
APE Extra High：192kHz/24bit（MAX）
APE Insane：96kHz/24bit（MAX）
Apple Lossless：384kHz/32bit（MAX）
AIFF：384kHz/32bit（MAX）
FLAC：384kHz/32bit（MAX）
WAV：384kHz/64bit（MAX）
WMA Lossless：96kHz/24bit（MAX）"

无损：

Frequency Response diagram of curves 1.
Line out - Test condition: 10K ohms loaded, play -5 dB sinusoidal signal,
Red curve: Left channel , Blue curve: Right channel.

Frequency Response diagram of curves 2.

3.5mm headphone output - Test condition: 32 ohms loaded, play -5 dB sinusoidal signal, full volume, Apodizing Fast Roll Off.

Red curve: Left channel , Blue curve: Right channel.

Frequency Response diagram of curves 3.

2.5mm TRRS balanced output - Test condition: 32 ohms loaded, play -5 dB sinusoidal signal, full volume, Apodizing Fast Roll Off.

Red curve: Left channel , Blue curve: Right channel.

Distortion diagram of curves 2.

2.5mm Headphone out - Test condition: play -5 dB sinusoidal signal

Distortion diagram of curves 3.

2.5mm TRRS balanced headphone - Test condition: play -5 dB sinusoidal signal