General specifications
Name/Model M17 Hardware solution Soc: Snapdragon 660, DAC: ES9038PRO*2, Amp: THX AAA 788+, Bluetooth: QCC5124, USB: XMOS XUF208, NDK Femtosecond crystal oscillator*2
User Interface     Android/Pure Music/USB DAC/Bluetooth Receiver/AirPlay mode Color Black
Size ≈156.4*88.5*28mm Volume control type ≈610g
Display 5.99 inches (1080*2160) incell fully fit screen Volume control type Knob or button control
RAM 4GB ROM 64GB/≈46GB
TF card Single TF card slot, theoretically support up to 2TB Gain control Low/medium/high/Over-ear headphone mode/Enhanced over-ear headphone mode (when connected to DC)
Channel balance L20~R20(0.5dB/level) Recommended headphone impedance 16~150Ω (SE output)/16~300Ω (BAL output)
Buttons and ports
Buttons Physical button + analog potentiometer volume knob + HOLD lock switch + BAT/DC switch + touch screen USB Two-way TYPE C USB3.0(Charging/Data transmisson),USB HOST Type-C USB2.0 
Phone Output 3.5mm single-ended+6.35mm single-ended+2.5mm balanced+4.4mm balanced Line out(LO) 3.5 mm port(shared PO)
COAX Output 

"RCA socket (coaxial decoding, coaxial output multiplexing)

Coaxial decoding supports up to 192kHz-24bit/DSD64

Coaxial output supports up to 384kHz-24bit/DSD128"

Balanced Line out 4.4 mm port(shared 4.4mm balanced PO)
Features
WiFi 2.4GHz/5GHz,DLNA、AirPlay、WiFi music transfer Bluetooth transmitter(5.0) SBC/AAC/aptX/aptX HD/LDAC
Bluetooth receiver(5.0) SBC/AAC/aptX/aptX Low Latency/aptX HD/aptX Adaptive/LDAC FiiO Link WiFi and Bluetooth control (Android), Bluetooth control (IOS)
MQA MQA 8x unfold All to DSD Yes
Double click to wakeup Not supported, to be upgraded In-vehicle mode Would power on/off automatically when vehicle engine starts/stops
Sampling Rate Supported Up to Local playback: up to 384kHz-32bit/DSD256 USB Audio 384kHz-32bit/DSD256 ( D2P/DOP)
USB DAC: up to 768kHz-32bit/DSD512 768kHz-32bit/DSD512 ( Native)
Power-off timers sleep/Idle poweroff Equalizer 10-band EQ (±12dB), 8 presets+custom preset, custom EQ supported
Firmware Upgrade Supports via zip file + TF card + OTA Navigation control Gesture control/2-Bottom navigation/3-Bottom navigation
Power Supply Parameters
Power supply Supports QC3.0, QC4.0 and PD2.0 and PD3.0 fast charge, POWER IN DC 12V  Battery capacity 9200mAh
Charging time about 4.5h (QC fast charge) Standby time >1000h
Battery life and test conditions            
3.5mm headphone output:>10h 
Volume 76 Gain L
Screen Off Test File MP3 44.1kHz/16bit
EQ Off Load 32Ω
2.5mm+4.4mm balanced output:>8h    
Volume 65 Gain L
Screen Off Test File MP3 44.1kHz/16bit
EQ Off Load 32Ω
Audio parameters            
PO output parameters(Over-ear headphone mode)            
Output power ≥740mW(16Ω / THD+N<1%) Output impedance ≤1Ω(32Ω)
Output power ≥500mW(32Ω /THD+N<1%) Crosstalk ≥75dB(1kHz/32Ω)
Output power ≥63mW(300Ω / THD+N<1%) THD+N ≤0.0007%(1kHz/32Ω)
Noise floor ≤3.5μV(dbA) SNR ≥120dB(dbA)
Frequency response 5Hz~80kHz(-3dB) Peak output voltage 11.3 Vp-p
PO output parameters(Enhanced over-ear headphone mode)            
Output power ≥1.4W(16Ω / THD+N<1%) Output impedance ≤1Ω(32Ω)
Output power ≥1.1W(32Ω /THD+N<1%) Crosstalk ≥75dB(1kHz/32Ω)
Output power ≥126mW(300Ω / THD+N<1%) THD+N ≤0.0009%(1kHz/32Ω)
Noise floor ≤3.5μV(dbA) SNR ≥122dB(dbA)
Frequency response 5Hz~80kHz(-3dB) Peak output voltage 16.9 Vp-p
LO output parameters            
THD+N ≤0.0006%(1kHz/10kΩ) SNR ≥120dB(dbA)
Crosstalk ≥103dB(1kHz/10kΩ) Noise floor ≤2μV(dbA)
Frequency response 5Hz~80kHz(-3dB) LO Output Level 1.9V(1kHz/10kΩ)
PO balanced output parameters(Over-ear headphone mode)             
Output power ≥1.5W(16Ω / THD+N<1%) Output impedance ≤2Ω(32Ω)
Output power ≥3W(32Ω /THD+N<1%) THD+N ≤0.0007%(1kHz/32Ω)
Output power ≥250mW(300Ω /THD+N<1%) Crosstalk ≥108dB(1kHz/32Ω)
Noise floor ≤7μV(dbA) SNR ≥121dB(dbA)
Frequency response 5Hz~80kHz(-3dB) Peak output voltage 19.7 Vp-p
PO balanced output parameters(Enhanced over-ear headphone mode)                            
Output power ≥1.5W(16Ω / THD+N<1%) Output impedance ≤2Ω(32Ω)
Output power ≥3W(32Ω /THD+N<1%) THD+N ≤0.0009%(1kHz/32Ω)
Output power ≥500mW(300Ω /THD+N<1%) Crosstalk ≥108dB(1kHz/32Ω)
Noise floor ≤7μV(dbA) SNR ≥121dB(dbA)
Frequency response 5Hz~80kHz(-3dB) Peak output voltage 27.7 Vp-p
LO balanced output parameters(dbA)            
THD+N ≤0.0006%(1kHz/10kΩ) SNR ≥122dB(dbA)
Crosstalk ≥105dB(1kHz/10kΩ) Noise floor ≤3μV(dbA)
Frequency response 5Hz~80kHz(-3dB) LO Output Level 3.9V(1kHz/10kΩ)
File format support            

Lossless
 

DSD:DSD64/128/256(“.iso”,“.dsf”,“.dff”),DST iSO

DXD:352.8kHz/24bit

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/32bit(MAX)

WMA LOSSLESS:96kHz/24bit(MAX)

Lossy MP3,OGG,WMA,AAC, etc.        

Frequency Response Curve 1

test conditions: COAX decoding,-5dB sinusoidal signal, BAL-LO output (10KΩ load)

Frequency Response Curve 2

Test condition: COAX decoding,-5dB sinusoidal signal, LO output (10KΩ load)

distortion graph 1

test conditions: COAX decoding, 0dB sinusoidal signal, BAL-LO output (10KΩ load)

Frequency Response Curve 3

Test condition: COAX decoding,-5dB sinusoidal signal, big ear mode, BAL output (32 Ω load)

Frequency Response Curve 4

Test conditions: COAX decoding,-5dB sinusoidal signal, big ear mode, PO output (32 Ω load)

frequency response curve 5

test conditions: UAC decoding,-5dB sinusoidal signal, BAL-LO output (10KΩ load)

frequency response curve 6

Test condition: UAC decoding,-5dB sinusoidal signal, LO output (10KΩ load)

Frequency Response Curve 7

Test conditions: UAC decoding,-5dB sinusoidal signal, big ear mode, BAL output (32 Ω load)

Frequency Response Curve 8

Test conditions: UAC decoding,-5dB sinusoidal signal, big ear mode, PO output (32 Ω load)

frequency response curve 9

test conditions: local playback,-5dB sinusoidal signal, BAL-LO(10KΩ load)

frequency response curve 10

Test condition: local playback,-5dB sinusoidal signal, LO output (10K Ω)

frequency response curve 11

test conditions: local playback,-5dB sinusoidal signal, super big ear mode, BAL-LO output (10KΩ load)

frequency response curve 12

Test condition: local playback,-5dB sinusoidal signal, super big ear mode, BAL output (32 Ω load)

frequency response curve 13

Test condition: local playback,-5dB sinusoidal signal, super big ear mode, LO output (10KΩ load)

frequency response curve 14

Test condition: local playback,-5dB sinusoidal signal, super big ear mode, PO output (32 Ω load)

frequency response curve 15

Test condition: local playback,-5dB sinusoidal signal, big ear mode, BAL output (32 Ω load)

frequency response curve 16

Test conditions: local playback,-5dB sinusoidal signal, big ear mode, PO output (32 Ω load)

distortion plot 2

Test condition: COAX decoding, 0dB sinusoidal signal, LO output (10KΩ load)

distortion graph 3

Test condition: COAX decoding,-7dB sinusoidal signal, big ear mode, BAL output (32 Ω load)

distortion graph 4

Test condition: COAX decoding,-10dB sinusoidal signal, big ear mode, PO output (10KΩ load)

distortion graph 5

test conditions: UAC decoding,-5dB sinusoidal signal, BAL-LO output (10KΩ load)

distortion graph 6

Test condition: UAC decoding,-5dB sinusoidal signal, LO output (10KΩ load)

distortion graph 7

test conditions: UAC decoding,-5dB sinusoidal signal, super big ear mode, BAL-LO output (10KΩ load)

distortion graph 8

Test conditions: UAC decoding,-5dB sinusoidal signal, super big ear mode, BAL output (32 Ω load)

distortion graph 9

Test conditions: UAC decoding,-5dB sinusoidal signal, super big ear mode, LO output (10KΩ load)

distortion graph 10

Test conditions: UAC decoding,-5dB sinusoidal signal, super big ear mode, PO output (32 Ω load)

distortion graph 11

Test conditions: UAC decoding,-5dB sinusoidal signal, big ear mode, BAL output (32 Ω load)

distortion graph 12

Test conditions: UAC decoding,-5dB sinusoidal signal, big ear mode, PO output (32 Ω load)