General Specifications
Name/Model R9 Hardware solution SoC: Qualcomm Snapdragon 660; DAC: ES9038Pro*2; Amp: 8-channel THX AAA 788+; USB decoding: XU316; Bluetooth: WCN3980 (transmission), QCC5125 (reception)
Working mode Android mode/Pure Music mode/USB DAC mode/Bluetooth Receiving mode/AirPlay mode/Coaxial decoding mode/Roon Ready/Optical decoding mode/HDMI IN mode/HDMI ARC mode
color Black silver patchwork Volume control Volume knob
Weight about 2271g Dimensions About 115x127x160mm
Display 6-inch (1080*2160) bezel-less display ROM/Available storage 64GB/About 46GB
RAM 4GB Gain mode Ultra high gain/Super high gain/High gain/Medium gain/Low gain
microSD card Single SD card, supports up to 2TB theoretically Recommended headphone impedance

PO:8~150Ω

BAL:8~350Ω
Channel balance L20~R20 (0.5dB per level)    
Buttons and Ports
Buttons Encoder knob (supports volume adjustment and power on)*1+Output selection knob*1 USB Type-C USB3.0*1+USB A*1 (data transmission)
DC power input Φ6.2mm DC port Toggle switch DC/AC power supply switch*1, Ground switch*1
BAL headphone output Standard 4.4mm port*1+XLR4 BAL port*1 Headphone output Standard 6.35mm port
BAL line output XLR3 BAL port Single-ended line output RCA port*2
Digital optical input Optical port Digital coaxial input RCA port
Digital optical output Interface Optical port Digital coaxial output RCA port
Network port 100M Ethernet port HDMI port HDMI IN*1, HDMI OUT (ARC)*1
Special Functions  
WiFi 2.4GHz/5GHz, supports DLNA, AirPlay, WiFi song transmission, Roon Ready, etc. Bluetooth transmission (5.0) AAC/SBC/aptX/aptX HD/LDAC/LHDC
Bluetooth reception (5.1) SBC/AAC/aptx/aptx-LL/aptx-HD/aptx-Adaptive/LDAC FiiO Link Android: WiFi and Bluetooth controls; iOS: Bluetooth control
HDMI Decoding Supports DVD/set-top box/computer, etc. HDMI ARC Supports devices with ARC function
MQA Supported MQA full decoding All to DSD Supported
Maximum supported sampling rate USB DAC: Supports up to 768kHz/32bit; DSD512 (Native) Bluetooth format indication (bar light, knob indicator) Blue: SBC
Local decoding: Supports up to 384kHz/32bit; DSD256 (Native) Cyan: AAC
USB Audio: 768kHz/32bit; DSD512 (DoP/D2P/Native) Purple:  aptX/ aptX LL
Coaxial IN: Supports up to 192kHz/24bit Yellow:  aptX HD
Optical IN: Supports up to 96kHz/24bit White: LDAC
Coaxial out: Supports up to 384kHz/24bit; DSD128 (D2P/DOP) Green:  aptX Adaptive
Optical out: Supports up to 192kHz/24bit Orange: LHDC
HDMI IN: Supports up to 192kHz/24bit Sampling rate indication
 (light strip, volume knob indicator light) 		 Blue: Lossy audio
HDMI OUT: Supports up to 192kHz/24bit Cyan: SQ
EQ adjustment 10-band dynamic EQ adjustment (±12dB), 8 kinds of preset EQ built in, self-defined EQ support Yellow: HR
Operation mode Supports gesture navigation, 2-button navigation, 3-button navigation Green: DSD
Screensaver Supported Magenta: MQA
Firmware upgrade Supports upgrade through local storage+microSD card+OTA RGB light design L-shaped RGB light strip (added a variety of light rhythm options)
Double tap to wake up Supported Appearance design Patchwork contrast color scheme, unibody glossy main body
Power Supply Parameter
Power supply Supported DC 15V/≥3A; AC 100-240V~50/60Hz (either-or)    
Audio Parameters
Parts of performance and parameters of headphone out (6.35mm headphone out, USB DAC/Optical decoding/Coaxial decoding, Ultra high gain mode)
Output power L+R≥3500mW+3500mW (16Ω, THD+N＜1%) Output impedance <0.4Ω
L+R≥2100mW+2100mW (32Ω,THD+N<1%) Crosstalk ≥ 77dB
L+R≥245mW+245mW (300Ω,THD+N<1%) Peak output voltage 24.4Vp-p
SNR ≥ 126dB (A-weighted) THD+N <0.00025%(1kHz/-1.1dB@32Ω)
Frequency response 20Hz ~ 80kHz: attenuation <0.9dB Noise floor ＜4uV (A-weighted)
20Hz ~ 20KHz: attenuation <0.2dB    
Parts of performance and parameters of headphone out (6.35mm headphone out, USB DAC/Optical decoding/Coaxial decoding, Super high gain mode)
Output power L+R≥2250mW +2250mW(16Ω,THD+N<1%) Output impedance <0.3Ω
L+R≥1400mW +1400mW(32Ω,THD+N<1%) Crosstalk ≥ 73dB
L+R≥125mW+125mW (300Ω,THD+N<1%) Peak output voltage 17.3Vp-p
SNR ≥ 125dB (A-weighted) THD+N <0.0003%(1kHz/-1.2dB@32Ω)
Frequency response 20Hz ~ 80kHz: attenuation <0.9dB Noise floor ＜4uV (A-weighted)
20Hz ~ 20KHz: attenuation <0.2dB    
Parts of performance and parameters of line output (RCA out, USB DAC/Optical decoding/Coaxial decoding)
THD+N <0.0003%(1kHz/-0dB @ 10KΩ) SNR ≥124.7dB (A-weighted)
Crosstalk ≥ 118dB Noise floor ＜1.4uV (A-weighted)
Frequency response 20Hz ~ 80kHz: Attenuation <1dB Line output level 2.4Vrms
20Hz ~ 20KHz: attenuation <0.03dB    
Parts of performance and parameters of BAL headphone out (XLR4/4.4mm headphone out, USB DAC/Optical decoding/Coaxial decoding, Ultra high gain mode)
Output power L+R≥3500mW+3500mW (16Ω,THD+N<1%) Output impedance <0.6Ω
L+R≥7300mW+7300mW (32Ω,THD+N<1%) Crosstalk ≥ 117dB
L+R≥1000mW+1000mW (300Ω,THD+N<1%) Peak output voltage 50Vp-p
SNR ≥ 126dB (A-weighted) THD+N <0.0002%(1kHz/-1.8dB@32Ω)
Frequency response 20Hz ~ 80kHz: attenuation <0.9dB Noise floor <7uV(A-weighted)
20Hz ~ 20KHz: attenuation <0.2dB    
Parts of performance and parameters of BAL headphone out (XLR4/4.4mm headphone out, USB DAC/Optical decoding/Coaxial decoding, Super high gain mode)
Output power L+R≥3500mW+3500mW (16Ω,THD+N<1%) Output impedance <0.5Ω
L+R≥4500mW +4500mW(32Ω,THD+N<1%) Crosstalk ≥ 117dB
L+R≥490mW+490mW (300Ω,THD+N<1%) Peak output voltage 34.5Vp-p
SNR ≥ 126dB (A-weighted) THD+N <0.0003%(1kHz/-1.8dB@32Ω)
Frequency response 20Hz ~ 80kHz: attenuation <0.9dB Noise floor <7uV(A-weighted)
20Hz ~ 20KHz: attenuation <0.2dB    
Parts of performance and parameters of BAL line output (XLR3 out, USB DAC/Optical decoding/Coaxial decoding)
THD+N <0.00024%(1kHz/0dB @ 10KΩ) SNR ≥ 128dB (A-weighted)
Crosstalk ≥ 123.8dB Noise floor <1.9uV(A weight)
Frequency response 20Hz ~ 80kHz: Attenuation <1dB Line output level 4.8Vrms
20Hz ~ 20KHz: attenuation <0.04dB    

Test conditions: -5dB, sinusoidal signal, 20Hz-20kHz, headphone out,super high gain mode (32Ω load) 

Test conditions: -5dB, sinusoidal signal, 20Hz-80kHz, BAL line out (10KΩ load) 

Test conditions: -5dB, sinusoidal signal, 20Hz-20kHz, headphone out, ultra high gain mode (32Ω load) 

Test conditions: -5dB, sinusoidal signal, 20Hz-20kHz, BAL headphone out, ultra high gain mode (32Ω load) 

Test conditions: -5dB, sinusoidal signal, 20Hz-20kHz, BAL headphone out,super high gain mode (32Ω load) 

Test conditions: -5dB, sinusoidal signal, 20Hz-20kHz, BAL line out (10KΩ load) 

Test conditions: -5dB,sinusoidal signal, 20Hz-20kHz, line out (10KΩ load) 

Test conditions: -5dB, sinusoidal signal, 20Hz-80kHz, headphone out,super high gain mode (32Ω load) 

Test conditions: -5dB, sinusoidal signal, 20Hz-80kHz, headphone out, ultra high gain mode (32Ω load) 

Test conditions: -0dB, sinusoidal signal, BAL line out (10KΩ load) 

Test conditions: -0dB, sinusoidal signal, line out (10KΩ load) 

Test conditions: -1.5dB, sinusoidal signal, headphone out, super high gain mode (32Ω load) 

Test conditions: -2dB, sinusoidal signal, headphone out (32Ω load) 

Test conditions: -2dB, sinusoidal signal, BAL headphone out, ultra high gain mode (32Ω load) 

Test conditions: -3.5dB, sinusoidal signal, BAL headphone out, super high gain mode (32Ω load) 

Test conditions: -5dB, sinusoidal signal, 20Hz-80kHz, headphone out, ultra high gain mode (32Ω load) 

Test conditions: -5dB, sinusoidal signal, 20Hz-80kHz, BAL headphone out,super high gain mode (32Ω load) 

Test conditions: -5dB, sinusoidal signal, 20Hz-80kHz, line out (10KΩ load)