| Main Unit |
| Name / Model No. | M7 | Operating System | Deeply customized Android |
| CPU model | Exynos 7270 14nm | No. of cores | 2 |
| CPU operating frequency | 1.0GHz | DAC | ES9018Q2C |
| Keyboard | Virtual QWERTY keyboard | Input method | Touchscreen |
| Special features | LDAC，FM radio，clock，gestures operation | User interface | Deeply customized /FiiO Music |
| Chips used | SoC: Samsung Exynos 7270 ， DAC：ES9018Q2C, FM chip：Si4705，Bluetooth chip：SAMSUNG S5N5C10B01-6330 |
| Connectivity |
| WiFi | N/A | Bluetooth | Bluetooth V4.2 |
| Bluetooth transmit | LDAC/aptX/aptX HD/SBC（required to update to FW1.0.4 or above, Available when playing on M7 or using M7 as USB DAC） | Bluetooth receive | SBC/LDAC (required to update to the latest firmware) |
| HWA（LHDC） | Available when playing on M7 or using M7 as USB DAC (required to update to FW1.0.4 or above) | USB | TYPE C USB2.0 |
| FiiO Link | Supoorted (required to update to the latest firmware) | | |
| Display screen |
| Display size | 3.2 inches | Number of colours | 2.62 million colors |
| Display type | TFT | Viewable angle | Full-view |
| Resolution | 480×800 | Pixel density | 292 ppi |
| Touchscreen | Yes | | |
| Storage |
| RAM | 768MB | Total ROM | 4GB |
| Storage expansion type | Micro SD card | ROM available to user | 2GB |
| Maximum storage expansion | 512GB (only one micro SD card slot) | | |
| Buttons and ports |
| Buttons | Side buttons + side volume wheel+ touchscreen | Custom key mapping | N/A |
| Headphone out | 3.5mm standard headphone output jack (shared PO/LO) | Balanced output | N/A |
| Line out | 3.5mm standard headphone output jack (shared PO/LO) | USB connection | TYPE C USB2.0（charging / data transfer） |
| Digital Coaxial/Optical out | N/A | | |
| General |
| Color | Black/Silver/Red/Blue | Dimensions | 52mm×109mm×13mm |
| Weight | About 116 g | Volume control | 60 steps digital potentiometer |
| Recommended headphone impedance | 16~100 Ω | Equalizer | 10-band EQ (±6dB), 9 presets+custom preset |
| Treble boost | N/A | Bass boost | N/A |
| Balance control | ±5 dB | Gain control | N/A |
| USB DAC | Asynchronous 192kHz/24bit (required to update to FW1.0.4 or above) | USB Audio | DSD64/128，DoP/D2P |
| Power specifications |
| USB power adapter | DC 5V/2A recommended | Battery | Internal 1880mAh Li-polymer battery |
| Charging indication | Red light indicates，blue light turns on after fully charged | Charging time | ＜2.5 h（DC5V/2A） |
| Battery indication | Yes (accurate battery % readings) | | |
| Battery Life & Test Conditions |
| 3.5mm headphone output：≥20 h |
| Volume | 15 | Load | M3 open earbuds (27 Ω) |
| EQ | OFF | Screen | OFF |
| Test File | MP3 44.1kHz/16bit | | |
| Bluetooth output：＞26 h |
| Volume | 60 | Load | 32Ω |
| Test File | MP3 44.1kHz/16bit | Screen | OFF |
| Battery life test file download link | click here to download | | |
| Others |
| Firmware Upgrade | Supported via zip file placed in internal storage or micro SD card | Font size | N/A |
| (*The product uses GPLv2 compliant firmware.) |
| Clock | Supported | Third-party apps support | N/A |
| FM Index |
| Output power | >20mW（76MHz） | SNR | >50dBA（76MHz） |
| >30mW（108MHz） | >70dBA（108MHz） |
| THD+N | ＜0.3%（76MHz） | Frequency response | 20Hz~4KHz（-3dB） |
| ＜0.1%（108MHz） |
| Covered region | 76－108MHz | | |
| Line output specifications |
| THD+N | ＜0.004% (1 kHz/10kΩ) | SNR | ≥117dB (A-weighted) |
| Frequency response | 20Hz~90 kHz（-3dB） | Noise floor | ＜3 uV |
| Channel separation | ≥100dB (1 kHz) | Line level | ＞1.2Vrms （10 kΩ/1 kHz） |
| Headphone out specifications (3.5mm headphone out jack) |
| Output power 1 | ≥70mW（16Ω / THD+N＜1%) | Output impedance | ＜2 Ω（32Ω loaded） |
| Output power 2 | ≥40mW（32Ω /THD+N＜1%) | THD+N | ＜0.004% |
| Frequency response | 10Hz~90 kHz（-3dB） | Peak output voltage | 3.35 Vp-p |
| SNR | ≥117dB (A-weighted) | Noise floor | ＜3 uV |
| File format support |
| Lossless: | DSD：DSD64（“.dsf”,“.dff”） |
| APE - FAST：192kHz/24bit（MAX.） |
| Apple Lossless：192kHz/24bit（MAX.） |
| AIFF：192kHz/24bit（MAX.） |
| FLAC：192kHz/24bit（MAX.） |
| WAV：192kHz/24bit（MAX.） |
| WMA LOSSLESS：96kHz/24bit（MAX.） |
| Lossy compression: | AAC、MP3、WMA、OGG... |
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