| Model |
M9 |
M11 |
M11pro |
M15 |
| CPU |
Exynos 7270 14nm |
Exynos 7872 14nm |
Exynos 7872 14nm |
Exynos 7872 14nm |
| CPU operating frequency |
1GHz |
2GHz（A73×2），1.6GHz（A53×4） |
2GHz（A73×2），1.6GHz（A53×4） |
2GHz（A73×2），1.6GHz（A53×4） |
| CPU No. of cores |
2 |
6 |
6 |
6 |
| DAC |
AK4490EN×2 |
AK4493EN×2 |
AK4497EN×2 |
AK4499EQ×2 |
| Operating system |
Customized |
Customized Android7.0 |
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 |
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 |
Four independent system mode，Full formates BT receive, Professional ADC Volume Adjustment Mode, Fully Decode (8x) the Original MQA Files, Corning Gorilla Glass, Innovative multifunctional button, All to non-SRC, All to DSD 2.0，2.5+3.5+4.4 output，Gesture control |
| User interface |
Customized/FiiO Music |
Customized/FiiO Music |
Customized/FiiO Music |
Android/Pure Music/SB DAC/Bluetooth Receiver |
| Chips used |
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 |
SoC：Exynos 7872，DAC：AK4499EQ*2，USB code：XMOS XUF208，BT receive：CSR8675，crystal oscillator：NDK Femtosecond crystal oscillator*2，AMP：OPA2211*2+OPA1622*4+OPA1612*4，FPGA：A3P030 |
| Bluetooth chip：SAMSUNG S5N5C10B01-6330 |
Bluetooth chip：SAMSUNG S5N5C10B01-6330 |
| WiFi |
2.4G，WiFi transmission supported |
Bluetooth chip：SAMSUNG S5N5C10B01-6330 |
Bluetooth chip：SAMSUNG S5N5C10B01-6330 |
2.4G/5G，WiFi transmission supported |
| BT transmit version |
4.2 |
4.2 |
4.2 |
4.2 |
| Bluetooth transmit |
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 |
LDAC/HWA/aptX/aptX HD/SBC |
| BT receive version |
4.2 |
4.2 |
4.2 |
5 |
| Bluetooth receive |
SBC/LDAC |
SBC/LDAC |
SBC/LDAC |
SBC/AAC/aptX/aptX LL/aptX HD/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 |
| AirPlay |
To be supported |
Supported |
Supported |
Supported |
| FiiO Link |
To be supported |
Supported |
Supported |
Supported |
| All to DSD |
N/A |
Supported |
Supported |
Supported |
| MQA |
N/A |
Supported |
Supported |
Supported |
| Screenshot with 3 fingers |
N/A |
Supported |
Supported |
Supported |
| Display size |
3.2 inches |
5.15 inches |
5.15 inches |
5.15 inches |
| Display type |
LG IPS screen |
IPS Hi-Res incell screen |
IPS Hi-Res incell screen |
IPS Hi-Res incell screen |
| Resolution |
480×800 |
1440×720 |
1440×720 |
1440×720 |
| Touchscreen |
5-finger multi-touch |
10-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 |
312 |
312 |
312 |
| RAM |
768MB |
3GB |
3GB |
3GB |
| Storage expansion type |
Micro SD card |
Micro SD card x 2 |
Micro SD card |
Micro SD card |
| Maximum storage expansion |
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) |
Theoretically 2TB (only one micro SD card slot) |
| ROM |
4GB |
32GB |
64GB |
64GB |
| ROM available to user |
2GB |
About 25GB |
About 52GB |
About 52GB |
| Buttons |
Physical button+Side volume scroll+Touch screen |
Physical button+Side volume scroll+Touch screen |
Physical button+Side volume scroll+Touch screen |
Physical button+Analog ADC volume knob + mechanical lock HOLD switch+Touch screen |
| Headphone out (PO) |
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 |
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 |
Supported one-click to add to favorites, one-click to random next song, one-click to delete the currently playing song, one-click to switch to USB decoding mode, one-click to switch to Bluetooth receiving mode, etc. |
| 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 |
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 |
3.5mm port（shared PO），DSD64/128，384kHz/32bit，DoP/D2P |
| Color |
Black/Silver |
Black |
Black |
Black |
| Dimensions |
60mm*106mm*13.3mm |
70.5mm*130mm*15.5mm |
70.5mm*130mm*16.5mm |
134*75*18mm |
| Weight |
about 133g |
about211g |
about232g |
about307g |
| Volume control |
120 steps +/- button control |
120 steps +/- button control |
120 steps +/- button control |
Analog volume knob control |
| Recommended headphone impedance |
16~300Ω |
16~300Ω |
16~300Ω |
16~600Ω |
| 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 |
L/H |
L/H |
L/H |
L/H |
| Over-ear Headphone mode |
N/A |
N/A |
N/A |
Supported |
| Balance control |
±5dB |
±5dB |
±5dB |
±5dB |
| USB DAC |
Asynchronous 192kHz/32bit |
Asynchronous 384kHz/32bit |
Asynchronous 384kHz/32bit |
768kHz/32bit|DSD512 |
| USB Audio |
DSD64/128，DoP/D2P |
768kHz-32bit/DSD512，DoP/D2P/Native |
768kHz-32bit/DSD512，DoP/D2P/Native |
768kHz-32bit/DSD512，DoP/D2P/Native |
| USB power adapter |
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 |
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 |
2350mAh Li-polymer battery |
3800mAh 3.8V Li-polymer battery supporting quick charge |
4370mAh 3.8V Li-polymer battery supporting quick charge |
7490mAh 3.8V Li-polymer battery supporting quick charge |
| Charging time |
＜2h（DC5V/2A） |
＜2.5h（DC 12V/1.5A） |
＜2.5h（DC 12V/1.5A） |
＜3.5h（DC 12V/1.6A） |
| Deep sleep time |
45 days |
50 days |
55 days |
75 days |
| Battery life 1 |
3.5mm headphone output：＞10h |
3.5mm headphone output：＞13h |
3.5mm headphone output：＞9.5h |
3.5mm headphone output：＞15h |
| 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/17bit |
MP3 44.1kHz/17bit |
MP3 44.1kHz/17bit |
| Battery life 2 |
2.5mm balanced output：＞9h |
2.5mm balanced output：＞9h |
2.5mm balanced output：＞10h |
2.5mm balanced output：＞9h |
| Volume |
48 |
49 |
49 |
49 |
| 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/16bit |
MP3 44.1kHz/16bit |
| 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 |
| Clock |
Supported |
Supported |
Supported |
Supported |
| Font size |
Not supported |
supported |
supported |
Supported |
| Preinstalled |
Preinstalled：FiiO Music, Netease Music, MOOV, Tidal, KKBOX |
Preinstalled：FiiO Music,ES File Bbrowser，Chrome Bbrowser |
Preinstalled：FiiO Music,ES File Bbrowser，Chrome Bbrowser |
Preinstalled：FiiO Music,ES File Bbrowser，Chrome Bbrowser |
| Third-party apps |
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) |
Supports any app |
Supports any app |
Supports any app |
| Line output specifications |
|
|
| THD+N |
＜0.002%（1kHz/10kΩ） |
＜0.001%（1kHz/10kΩ） |
＜0.0006%（1kHz/10kΩ） |
＜0.0004%（1kHz/10kΩ） |
| Frequency response |
5Hz~80 kHz（-3dB） |
10Hz~90 kHz（-3dB） |
5Hz~86kHz（-3dB） |
20Hz~90kHz（-4dB） |
| Channel separation |
＞105dB |
＞108dB |
＞108dB |
＞107dB |
| SNR |
≥117dB (A-weighted) |
≥115dB (A-weighted) |
≥119dB (A-weighted) |
≥121dB (A-weighted) |
| Noise floor |
＜5uV |
＜6uV（20k low pass） |
＜2μV |
＜1.9μV |
| Line level |
2V |
1.95V |
1.95V |
2.1V |
| Headphone out specifications 1（3.5mm port） |
|
| Output power 1 |
≥125mW（16Ω / THD+N＜1%) |
≥255mW（16Ω / THD+N＜1%) |
≥294mW（16Ω / THD+N＜1%） |
≥285mW（16Ω / THD+N＜1%)
≥405mW（Over-ear Mode/16Ω / THD+N＜1%) |
| Output power 2 |
≥170mW（32Ω /THD+N＜1%) |
≥195mW（2.5V）（32Ω /THD+N＜1%) |
≥200mW（32Ω /THD+N＜1%） |
≥215mW（32Ω /THD+N＜1%)
≥490mW（Over-ear Mode/32Ω /THD+N＜1%) |
| Output power 3 |
≥19mW（300Ω / THD+N＜1%) |
≥22mW（300Ω / THD+N＜1%) |
≥22mW（300Ω / THD+N＜1%） |
≥31mW（300Ω / THD+N＜1%)
≥70mW（Over-ear Mode/300Ω / THD+N＜1%) |
| Frequency response |
5Hz~80 kHz（-3dB） |
10Hz~90 kHz（-3dB） |
5Hz~86kHz（-3dB） |
20Hz~90kHz（-4dB） |
| SNR |
≥118dB (A-weighted) |
≥118dB (A-weighted) |
≥118dB (A-weighted) |
≥121dB（A-weighted）
≥119dB（Over-ear Mode/A-weighted） |
| Output impedance |
＜2Ω |
＜1Ω |
≤1.1Ω |
≤1.4Ω |
| THD+N |
＜0.002%（1kHz/32Ω） |
＜0.003%（1kHz/32Ω） |
＜0.00084%（1kHz/32Ω） |
＜0.0005%（1kHz/32Ω） |
| Separation |
＞72dB |
＞72dB |
＞72dB（1kHz/32Ω） |
＞77dB（1kHz/32Ω） |
| ＞113dB（No load） |
＞115dB（No load） |
| Noise floor |
＜5uV |
＜5uV（20k low pass） |
＜3μV |
＜2.1μV
＜3μV（Over-ear Mode） |
| Headphone out specifications 2（2.5mm port） |
|
| Output power 1 |
≥125mW（16Ω / THD+N＜1%) |
≥480mW（16Ω / THD+N＜1%) |
≥460mW（16Ω / THD+N＜1%) |
≥420mW（16Ω / THD+N＜1%)
≥370mW（Over-ear Mode/16Ω / THD+N＜1%) |
| Output power 2 |
≥195mW（32Ω /THD+N＜1%，balanced turbo off) |
≥550mW（4.2V）（32Ω /THD+N＜1%） |
≥550mW（32Ω /THD+N＜1%） |
≥635mW（4.2V）（32Ω /THD+N＜1%）
≥800mW（Over-ear Mode/16Ω / THD+N＜1%) |
| ≥220mW（32Ω /THD+N＜1%，balanced turbo on) |
| Output power 3 |
≥24mW（300Ω / THD+N＜1%，balanced turbo off) |
≥88.5mW（300Ω /THD+N＜1%) |
≥88.5mW（300Ω /THD+N＜1%) |
≥120mW（300Ω /THD+N＜1%)
≥280mW（Over-ear Mode/16Ω / THD+N＜1%) |
| ≥77mW（300Ω / THD+N＜1%，balanced turbo on) |
| Frequency response |
5Hz~80 kHz（-3dB） |
10Hz~90 kHz（-3dB） |
5Hz~86kHz（-3dB） |
20Hz~90kHz（-3dB） |
| SNR |
≥113dB (A-weighted) |
≥118dB (A-weighted) |
≥119dB (A-weighted) |
≥122dB（A-weighted）
≥118dB（Over-ear Mode/A-weighted） |
| Output impedance |
＜2Ω |
＜2Ω |
≤2.4Ω |
≤3Ω |
| THD+N |
＜0.002%（1kHz/32Ω） |
＜0.002%（1kHz/32Ω） |
＜0.00108%（1kHz/32Ω） |
＜0.0006%（Over-ear Mode/1kHz/300Ω） |
| Separation |
＞98dB |
＞107dB |
＞108dB（1kHz/32Ω） |
＞103dB（1kHz/32Ω） |
| ＞115dB（No load） |
＞118dB（No load） |
| Noise floor |
＜10uV |
＜7uV（20k low pass） |
＜4μV |
＜3.8μV
＜5.2μV（Over-ear Mode） |
| File format support |
|
| Lossless: |
DSD：DSD64，128（iso”“.dsf”,“.dff”） |
DSD：DSD64/128/256（“.iso”,“.dsf”,“.dff”），dst |
DSD：DSD64/128/256（“.iso”,“.dsf”,“.dff”），dst |
DSD：DSD64/128/256（“.iso”,“.dsf”,“.dff”），dst |
| APE(Fast): 192 kHz/24 bit |
DXD：352.8K |
DXD：352.8K |
DXD：352.8K |
| APE(Normal): 192 kHz/24 bit |
APE FAST/High/Normal：384kHz/24bit（MAX） |
APE FAST/High/Normal：384kHz/24bit（MAX） |
APE FAST/High/Normal：384kHz/24bit（MAX） |
| APE (High): 192kHz/24 bit |
APE Extra High：192kHz/24bit（MAX） |
APE Extra High：192kHz/24bit（MAX） |
APE Extra High：192kHz/24bit（MAX） |
| APE (Extra High): 48kHz/24 bit |
APE Insane：96kHz/24bit（MAX） |
APE Insane：96kHz/24bit（MAX） |
APE Insane：96kHz/24bit（MAX） |
| APE (Insane): 48kHz/24 bit |
Apple Lossless：384kHz/32bit（MAX） |
Apple Lossless：384kHz/32bit（MAX） |
Apple Lossless：384kHz/32bit（MAX） |
| FLAC: 192 kHz/24 bit |
AIFF：384kHz/32bit（MAX） |
AIFF：384kHz/32bit（MAX） |
AIFF：384kHz/32bit（MAX） |
| WAV: 192 kHz/64 bit |
FLAC：384kHz/32bit（MAX） |
FLAC：384kHz/32bit（MAX） |
FLAC：384kHz/32bit（MAX） |
| Aiff：192 kHz/24 bit |
WAV：384kHz/32bit（MAX） |
WAV：384kHz/32bit（MAX） |
WAV：384kHz/32bit（MAX） |
| Aif:192 kHz/24 bit |
WMA LOSSLESS：96kHz/24bit（MAX） |
WMA LOSSLESS：96kHz/24bit（MAX） |
WMA LOSSLESS：96kHz/24bit（MAX） |
| WMA Lossless: 96 kHz/24 bit |
|
|
|
| Apple Lossless: 192 kHz/24 bit |
|
|
|
| Lossy compression: |
MP3，OGG，WMA，AAC… |
MP4，OGG，WMA，AAC… |
MP4，OGG，WMA，AAC… |
MP4，OGG，WMA，AAC… |
