Model M6 M9 M11 M11pro
CPU Exynos 7270 14nm Exynos 7270 14nm Exynos 7872 14nm Exynos 7872 14nm
CPU operating frequency 1GHz 1GHz 2GHz（A73×2），1.6GHz（A53×4） 2GHz（A73×2），1.6GHz（A53×4）
CPU No. of cores 2 2 6 6
DAC ES9018Q2C AK4490EN×2 AK4493EN×2 AK4497EN×2
Operating system Customized Customized Customized Android7.0 Customized Android7.0
Input method Multi-touch screen Multi-touch screen Multi-touch screen Multi-touch screen
Keyboard Virtual QWERTY keyboard Virtual QWERTY keyboard Virtual QWERTY keyboard Virtual QWERTY keyboard
Special features WiFi Streaming，LDAC/HWA/aptX/aptX HD/SBC Bluetooth support，Airplay with Apple devices，FiiO Link LDAC，HWA，Gesture operation，WiFi Streaming，RGB indicator for different formats，Bi-directional Bluetooth，8-layer HDI PCB Android 7.0，No SRC restriction，All to DSD，2.5+3.5+4.4 output，Gesture control Android 7.0，No SRC restriction，All to DSD，2.5+3.5+4.4 output，Gesture control
User interface Customized/FiiO Music Customized/FiiO Music Customized/FiiO Music Customized/FiiO Music
Chips used SoC: Samsung Exynos 7270 ， DAC：ES9018Q2C, Bluetooth chip：SAMSUNG S5N5C10B01-6330 SoC: Samsung Exynos 7270，DAC：AK4490EN*2，FPGA：A3P030，LPF：OPA1612，BUF：OPA1622*2 SoC: Samsung Exynos 7872，DAC：AK4493EQ*2，FPGA：A3P030，LPF：OPA1642×2，AMP：OPA926*2 SoC: Samsung Exynos 7872，DAC：AK4497EQ*2，FPGA：A3P030，LPF：OPA1642×3，AMP：LMH6644*2，Volume IC : NJW1195
Bluetooth chip：SAMSUNG S5N5C10B01-6330
WiFi 2.4G，WiFi transmission supported 2.4G，WiFi transmission supported 2.4G/5G，WiFi transmission supported 2.4G/5G，WiFi transmission supported
Bluetooth 4.2 4.2 4.2 4.2
Bluetooth transmit LDAC/HWA/aptX/aptX HD/SBC (HWAAvailable when playing on M9, other codecs available when playing on M9 and using as USB DAC) LDAC/aptX/aptX HD/SBC（Available when playing on M9 or using M9 as USB DAC） LDAC/aptX/aptX HD/SBC LDAC/aptX/aptX HD/SBC
Bluetooth receive SBC/LDAC to be supported SBC/LDAC to be supported SBC/LDAC  SBC/LDAC 
DLNA Supports Windows for now, will support more in the future Supports Windows for now, will support more in the future Supports Windows for now, will support more in the future Supports Windows for now, will support more in the future
USB TYPE C Two-way USB2.0 TYPE C Two-way USB2.0 TYPE C Two-way USB2.0 TYPE C Two-way USB2.0
HWA（LHDC） Available when playing on M9 Available when playing on M9 Available when playing on M11 or using M11 as USB DAC Available when playing on M11 or using M11 as USB DAC
AirPlay Supported To be supported Supported Supported
FiiO Link Supported To be supported Supported Supported
Display size 3.2 inches 3.2 inches 5.15 inches 5.15 inches
Display type LG IPS screen LG IPS screen IPS Hi-Res incell screen IPS Hi-Res incell screen
Resolution 480×800 480×800 1440×720 1440×720
Touchscreen 5-finger multi-touch 5-finger multi-touch 10-finger multi-touch 10-finger multi-touch
Number of colours 16M 16M 16M 16M
Viewable angle Full-view Full-view Full-view Full-view
Pixel density(PPI) 292 292 312 312
RAM 768MB 768MB 3GB 3GB
Storage expansion type Micro SD card Micro SD card Micro SD card x 2 Micro SD card
Maximum storage expansion Theoretically 2TB (only one micro SD card slot) Theoretically 2TB (only one micro SD card slot) Theoretically 4TB (with each micro SD card supporting 2TB) Theoretically 2TB (only one micro SD card slot)
ROM 4GB 4GB 32GB 64GB
ROM available to user 2GB 2GB About 25GB About 52GB
Buttons Physical button+Touch screen Physical button+Side volume scroll+Touch screen Physical button+Side volume scroll+Touch screen Physical button+Side volume scroll+Touch screen
Headphone out (PO) 3.5mm standard headphone output jack (shared PO/LO) 3.5 mm headphone jack+2.5mm balanced headphone jack 3.5 mm headphone jack+2.5mm balanced headphone jack+4.4mm balanced headphone jack 3.5 mm headphone jack+2.5mm balanced headphone jack+4.4mm balanced headphone jack
Line out (LO) 3.5 mm port（shared PO） 3.5 mm port（shared PO） 3.5 mm port（shared PO） 3.5 mm port（shared PO）
Button customization N/A N/A N/A N/A
USB Two-way TYPE C USB2.0（Charging/Data transmisson/USB DAC/USB Audio） Two-way TYPE C USB2.0（Charging/Data transmisson/USB DAC/USB Audio） Two-way TYPE C USB2.0（Charging/Data transmisson/USB DAC/USB Audio） Two-way TYPE C USB2.0（Charging/Data transmisson/USB DAC/USB Audio）
SPDIF output N/A 3.5mm port（shared PO） 3.5mm port（shared PO），DSD64/128，384kHz/32bit，DoP/D2P 3.5mm port（shared PO），DSD64/128，384kHz/32bit，DoP/D2P
Color Black Black/Silver Black Black
Dimensions 53.3mm×92.5mm×11.5mm 60mm*106mm*13.3mm 70.5mm*130mm*15.5mm 70.5mm*130mm*16.5mm
Weight about 83g about 133g about211g about232g
Volume control 120 steps +/- button control 120 steps +/- button control 120 steps +/- button control 120 steps +/- button control
Recommended headphone impedance 16~100 Ω 16~300Ω 16~300Ω 16~300Ω
Treble control N/A N/A N/A N/A
Balance control N/A N/A N/A N/A
Equalizer 10-band EQ (±6dB), 9 presets+custom preset 10-band EQ (±6dB), 9 presets+custom preset 10-band EQ (±6dB), 9 presets+custom preset 10-band EQ (±6dB), 9 presets+custom preset
Gain control N/A L/H L/H L/H
Balance control ±5dB ±5dB ±5dB ±5dB
USB DAC Asynchronous 192kHz/24bit Asynchronous 192kHz/32bit Asynchronous 384kHz/32bit Asynchronous 384kHz/32bit
USB Audio DSD64/128，DoP/D2P DSD64/128，DoP/D2P 768kHz-32bit/DSD512，DoP/D2P/Native 768kHz-32bit/DSD512，DoP/D2P/Native
USB power adapter DC 5V/2A recommended DC 5V/2A recommended QC2.0/3.0 quick charger，PD2.0 charger，DC 12V/1.5A、9V/2A、5V/2A recommended QC2.0/3.0 quick charger，PD2.0 charger，DC 12V/1.5A、9V/2A、5V/2A recommended
Charging indication Large charging icon shows on display when it's off, small charging icon shows on upper right of display when it's on Large charging icon shows on display when it's off, small charging icon shows on upper right of display when it's on Large charging icon shows on display when it's off, small charging icon shows on upper right of display when it's on Large charging icon shows on display when it's off, small charging icon shows on upper right of display when it's on
Battery indication Yes (accurate battery % readings) Yes (accurate battery % readings) Yes (accurate battery % readings) Yes (accurate battery % readings)
Battery capacity 1200mAh Li-polymer battery 2350mAh Li-polymer battery 3800mAh 3.8V Li-polymer battery supporting quick charge 4370mAh 3.8V Li-polymer battery supporting quick charge
Charging time ＜2.5h（DC5V/2A） ＜2h（DC5V/2A） ＜2.5h（DC 12V/1.5A） ＜2.5h（DC 12V/1.5A）
＜3h（DC 5V/2A） ＜3h（DC 5V/2A）
Deep sleep time 26 days 45 days 50 days 55 days
Battery life 1 3.5mm headphone output：＞13h 3.5mm headphone output：＞10h 3.5mm headphone output：＞13h 3.5mm headphone output：＞9.5h
Volume 57 46 60 60
Screen OFF OFF OFF OFF
EQ OFF OFF OFF OFF
Load M3 open earbuds (27 Ω) M3 open earbuds (27 Ω) M3 open earbuds (27 Ω) M3 open earbuds (27 Ω)
Test File MP3 44.1kHz/16bit MP3 44.1kHz/16bit MP3 44.1kHz/17bit MP3 44.1kHz/17bit
Battery life 2 N/A 2.5mm balanced output：＞9h 2.5mm balanced output：＞9h 2.5mm balanced output：＞10h
Volume N/A 48 49 49
Screen N/A OFF OFF OFF
EQ N/A OFF OFF OFF
Load N/A M3 open earbuds (27 Ω) M3 open earbuds (27 Ω) M3 open earbuds (27 Ω)
Test File N/A MP3 44.1kHz/16bit MP3 44.1kHz/17bit MP3 44.1kHz/17bit
Battery life 3 Bluetooth output：＞15h（SBC） Bluetooth output：＞30h（SBC） Bluetooth output：＞48h（LDAC） Bluetooth output：55（LDAC）
Volume 120 60 60 60
Screen OFF OFF OFF OFF
Load BTR1+FH1 BTR1+FH1 BTR3+FH1 BTR3+FH1
Test File MP3 44.1kHz/16bit MP3 44.1kHz/16bit MP3 44.1kHz/17bit MP3 44.1kHz/17bit
Firmware Upgrade Supports both via zip file and OTA Supports both via zip file and OTA Supports both via zip file and OTA Supports both via zip file and OTA
Recording N/A N/A N/A N/A
A-B Repeat N/A N/A N/A N/A
OTG Transfer N/A N/A N/A N/A
Clock Supported Supported Supported Supported
Font size Not supported Not supported supported supported
Third-party apps support Preinstalled：FiiO Music, Netease Music, MOOV, Tidal, KKBOX Preinstalled：FiiO Music, Netease Music, MOOV, Tidal, KKBOX Supports any app Supports any app
APP whitelist：Spotify、Qobuz、Roon、Deezer，QQ Music、Xiami Music、JOOX、ES file manager、Himalaya (copy theapk file to Micro SD card or internal storage to install) APP whitelist：Spotify、Qobuz、Roon、Deezer，QQ Music、Xiami Music、JOOX、ES file manager、Himalaya (copy theapk file to Micro SD card or internal storage to install)
Line output specifications  
THD+N ＜0.002%（1kHz/10kΩ） ＜0.002%（1kHz/10kΩ） ＜0.001%（1kHz/10kΩ） ＜0.0006%（1kHz/10kΩ）
Frequency response 10Hz~85 kHz（-3dB） 5Hz~80 kHz（-3dB） 10Hz~90 kHz（-3dB） 5Hz~86kHz（-3dB）
Channel separation ＞112dB ＞105dB ＞108dB ＞108dB
SNR ≥117dB (A-weighted) ≥117dB (A-weighted) ≥115dB (A-weighted) ≥119dB (A-weighted)
Noise floor ＜3uV ＜5uV ＜6uV（20k low pass） ＜2μV
Line level 1.5V 2V 1.95V 1.95V
FM Index  
Output power N/A N/A N/A N/A
THD+N N/A N/A N/A N/A
SNR N/A N/A N/A N/A
Frequency response N/A N/A N/A N/A
Covered region N/A N/A N/A N/A
Headphone out specifications 1（3.5mm port）
Output power 1 ≥110mW（16Ω / THD+N＜1%) ≥125mW（16Ω / THD+N＜1%) ≥255mW（16Ω / THD+N＜1%) ≥294mW（16Ω / THD+N＜1%）
Output power 2 ≥70mW（32Ω /THD+N＜1%) ≥170mW（32Ω /THD+N＜1%) ≥195mW（2.5V）（32Ω /THD+N＜1%) ≥200mW（32Ω /THD+N＜1%）
Output power 3 ≥7mW（300Ω / THD+N＜1%) ≥19mW（300Ω / THD+N＜1%) ≥22mW（300Ω / THD+N＜1%) ≥22mW（300Ω / THD+N＜1%）
Frequency response 10Hz~85 kHz（-3dB） 5Hz~80 kHz（-3dB） 10Hz~90 kHz（-3dB） 5Hz~86kHz（-3dB）
SNR ≥118dB (A-weighted) ≥118dB (A-weighted) ≥118dB (A-weighted) ≥118dB (A-weighted)
Output impedance ＜2Ω ＜2Ω ＜1Ω ≤1.1Ω
THD+N ＜0.002%（1kHz/32Ω） ＜0.002%（1kHz/32Ω） ＜0.003%（1kHz/32Ω） ＜0.00084%（1kHz/32Ω）
Separation ＞75dB ＞72dB ＞72dB ＞72dB（1kHz/32Ω）
＞113dB（No load）
Noise floor ＜3uV ＜5uV ＜5uV（20k low pass） ＜3μV
Headphone out specifications 2（2.5mm port）
Output power 1 N/A ≥125mW（16Ω / THD+N＜1%) ≥480mW（16Ω / THD+N＜1%) ≥460mW（16Ω / THD+N＜1%)
Output power 2 N/A ≥195mW（32Ω /THD+N＜1%，balanced turbo off) ≥550mW（4.2V）（32Ω /THD+N＜1%） ≥550mW（32Ω /THD+N＜1%）
≥220mW（32Ω /THD+N＜1%，balanced turbo on)
Output power 3 N/A ≥24mW（300Ω / THD+N＜1%，balanced turbo off) ≥88.5mW（300Ω /THD+N＜1%) ≥88.5mW（300Ω /THD+N＜1%)
≥77mW（300Ω / THD+N＜1%，balanced turbo on)
Frequency response N/A 5Hz~80 kHz（-3dB） 10Hz~90 kHz（-3dB） 5Hz~86kHz（-3dB）
SNR N/A ≥113dB (A-weighted) ≥118dB (A-weighted) ≥119dB (A-weighted)
Output impedance N/A ＜2Ω ＜2Ω ≤2.4Ω
THD+N N/A ＜0.002%（1kHz/32Ω） ＜0.002%（1kHz/32Ω） ＜0.00108%（1kHz/32Ω）
Separation N/A ＞98dB ＞107dB ＞108dB（1kHz/32Ω）
＞115dB（No load）
Noise floor N/A ＜10uV ＜7uV（20k低通） ＜4μV
File format support
Lossless: DSD：DSD64，128（iso”“.dsf”,“.dff”） DSD：DSD64，128（iso”“.dsf”,“.dff”） DSD：DSD64/128/256（“.iso”,“.dsf”,“.dff”），dst DSD：DSD64/128/256（“.iso”,“.dsf”,“.dff”），dst
APE(Fast): 192 kHz/24 bit APE(Fast): 192 kHz/24 bit DXD：352.8K DXD：352.8K
APE(Normal): 192 kHz/24 bit APE(Normal): 192 kHz/24 bit APE FAST/High/Normal：384kHz/24bit（MAX） APE FAST/High/Normal：384kHz/24bit（MAX）
APE (High): 192kHz/24 bit APE (High): 192kHz/24 bit APE Extra High：192kHz/24bit（MAX） APE Extra High：192kHz/24bit（MAX）
APE (Extra High): 48kHz/24 bit APE (Extra High): 48kHz/24 bit APE Insane：96kHz/24bit（MAX） APE Insane：96kHz/24bit（MAX）
APE (Insane): 48kHz/24 bit APE (Insane): 48kHz/24 bit Apple Lossless：384kHz/32bit（MAX） Apple Lossless：384kHz/32bit（MAX）
FLAC: 192 kHz/24 bit FLAC: 192 kHz/24 bit AIFF：384kHz/32bit（MAX） AIFF：384kHz/32bit（MAX）
WAV: 192 kHz/64 bit WAV: 192 kHz/64 bit FLAC：384kHz/32bit（MAX） FLAC：384kHz/32bit（MAX）
Aiff：192 kHz/24 bit Aiff：192 kHz/24 bit WAV：384kHz/32bit（MAX） WAV：384kHz/32bit（MAX）
Aif:192 kHz/24 bit Aif:192 kHz/24 bit WMA LOSSLESS：96kHz/24bit（MAX） WMA LOSSLESS：96kHz/24bit（MAX）
WMA Lossless: 96 kHz/24 bit WMA Lossless: 96 kHz/24 bit 　 　
Apple Lossless: 192 kHz/24 bit Apple Lossless: 192 kHz/24 bit 　 　
Lossy compression: MP3，OGG，WMA，AAC… MP3，OGG，WMA，AAC… MP4，OGG，WMA，AAC… MP4，OGG，WMA，AAC…