Thursday, December 8, 2022
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FiiO M7 Review

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Goh Beng Yeow
Goh Beng Yeow
Goh Beng Yeow, the Founder / Editor at Porta-Fi™, is a recipient of the IT Youth Award in Singapore. Twice nominated for EY Entrepreneur of the Year Awards, Beng Yeow has previously founded startups such as, Coded Pixels Consultants and was a Tech writer for TODAY, a national daily newspaper under MediaCorp. Since 2017, he has been writing, editing and producing commentaries, interviews, news and reviews on Porta-Fi™. In 2019, Beng Yeow was appointed Advisor to LHDC™, the industry's latest low latency and high-definition Bluetooth audio codec.

Product Specifications

Main Unit
Name / Model No.M7Operating SystemDeeply customized Android
CPU ModelExynos 7270 14nmNo. of cores2
CPU operating frequency1.0GHzDACES9018Q2C
KeyboardVirtual QWERTY keyboardInput methodTouchscreen
Special featuresLDAC,FM radio,clock,gestures operationUser InterfaceAndroid / FiiO Music
Chips usedSoC: Samsung Exynos 7270 , DAC:ES9018Q2C,  FM chip:Si4705,Bluetooth chip:SAMSUNG  S5N5C10B01-6330
WIFIN/ABluetoothBluetooth V4.2
Bluetooth transmitterLDAC / aptX / aptX HD / SBCBluetooth receiverSBC / LDAC
HWA (LHDC)Available when playing on M7 or using M7 as USB DACUSBUSB-C 2.0
Display screen
Display size3.2 inchesNumber of colours2.62 million colours
Display typeIPS TFTViewable angleFull-view
Resolution480×800Pixel density292 PPI
Storage expansion typeMicro SDROM available to the user2GB
Maximum storage expansionTheoretically 2TB (1 micro SD card slot)
Buttons and ports
ButtonsSide buttons + side volume wheel+ touchscreenCustom key mappingN/A
Headphone out3.5mm standard headphone output jack (shared PO/LO)Balanced outputN/A
Line out3.5mm standard headphone output jack (shared PO/LO)USB connectionUSB-C (charging / data transfer / USB DAC)
ColourBlack / Silver / Red / BlueDimensions52mm×109mm×13mm
WeightAbout 116gVolume control60 steps digital potentiometer
Recommended headphone impedance16~100 ΩEqualizer10-and EQ (±6dB), 9 presets+custom preset
Bass boostN/ATreble boostN/A
Balance control±5 dBGain controlN/A
USB DACAsynchronous 192kHz/24bitUSB AudioDSD64/128,DoP/D2P
Power specifications
USB power adapter5V/2A recommendedBatteryInternal 1880mAh Li-polymer battery
Charging indicationRed light indicates,blue light turns on after fully chargedCharging time<2.5 h(DC5V/2A)
Battery indicationYes (accurate battery % readings)
Battery Life & Test Conditions
3.5mm headphone output:≥20 h
Volume15LoadM3 open earbuds (27 Ω)
Test FileMP3 44.1kHz/16bit (Download link)
Bluetooth output:>26 h
Test FileMP3 44.1kHz/16bit (Download link)ScreenOFF
Firmware UpgradeSupported via zip file placed in internal storage or micro SD card
(*The product uses GPLv2 compliant firmware.)
Font sizeN/A
ClockSupportedThird-party apps supportN/A
Line output specifications
THD+N<0.004% (1 kHz/10kΩ)SNR≥117 dB (A-weighted)
Frequency response20Hz~90 kHz(-3dB)Noise floor<3 uV
Channel separation≥100 dB (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<2Ω (32Ω loaded)
Output power 2≥40mW(32Ω /THD+N<1%)THD+N<0.004%
Frequency response10Hz~90 kHz(-3dB)Peak output voltage3.35 Vp-p
SNR≥117 dB (A-weighted)Noise floor<3 uV
File format support
Lossless:DSD:DSD64 (“.dsf”,”.dff”)
APE FAST/High/Normal:192kHz/24bit(MAX)
Apple Lossless:192kHz/24bit(MAX)
WMA Lossless:96kHz/24bit(MAX)
Lossy compression:MP3, AAC, WMA, OGG…
Price:USD 199.99 (SGD 329)


Part 1: Introduction, Design and Build
Part 2: Usability
Part 3: Sound Quality
Part 4: Product Specifications
Part 5: Review Ratings, Summary

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