S9 Pro Specifications

Parameters Dimensions 18 x 59 x 8mm
DAC Chip ES9038Q2M
DSD Native DSD64/128/256/512
PCM Support up to 768kHz/32Bit
Build Quality Aluminum-alloy CNC integration (Black, Silver)
Transmission Interface Type-C
Net Weight 11g
Output Option Compatible with Single Ended 3.5mm and Balanced 2.5mm headphones.
Compatible with earphone with a mic.
Power No need to charge. Plug and Play.
System Function Support: Windows, Mac OS, iPad OS, Android, iOS. Please note: For iOS users, the Lightning OTG cable has to be purchased separately.

Performance Specifications
Single-Ended Headphone Output Rated Output Power L&R 100mW@32Ω
Frequency Response 20-50kHz
Signal-to-Noise Ratio (SNR) 120dB (@32Ω)
Channel Separation 80dB (@32Ω)
Total Harmonic Distortion+Noise 0.0012% (@32Ω)
Balanced Headphone Output Rated Output Power L&R 200mW@32Ω
Frequency Response 20-50kHz
Signal-to-Noise Ratio (SNR) 119dB (@32Ω)
Channel Separation 118dB (@32Ω)
Total Harmonic Distortion+Noise 0.0006% (@32Ω)
Recommended Headphone Impedance Range 8-300Ω
Metal & Color Black, Silver
What's in the box Type-C to Type-C×1
Type-C to USB-A adapter×1
Rear clip×1
User manual×1
Warranty card×1
Comparison
Model No. S8 S9 S9 PRO
Product Type Split Style Split Style Split Style
DAC Chip CS43131 AK4493EQ ESS9038Q2M
Headphone Jack 3.5mm 3.5mm +2.5mm 3.5mm +2.5mm
Indicator Light NO YES YES
PCM24/192 YES YES YES
PCM32/384 YES YES YES
PCM32/768 NO YES YES
DSD64 YES YES YES
DSD128 YES YES YES
DSD256 YES YES YES
DSD512 NO YES YES
SNR

120dB

 3.5mm PO: 119dB（@32Ω）
2.5mm BAL: 117dB（@32Ω）		 3.5mm PO: 120dB（@32Ω）
2.5mm BAL: 119dB（@32Ω）
Channel Separation

78dB（@32Ω）

 3.5mm PO: 79dB（@32Ω）
2.5mm BAL: 114dB（@32Ω）		 3.5mm PO: 80dB（@32Ω）
2.5mm BAL: 118dB（@32Ω）
Total Harmonic Distortion+Noise

0.002% (1kHz)

 3.5mm: 0.0018%@32Ω
2.5mm: 0.006% @32Ω		 3.5mm: 0.0006%@32Ω
2.5mm: 0.0012% @32Ω
Output Power 2.5mm BAL: 120mW@32Ω 3.5mm PO:90mW@32Ω 2.5mm BAL: 200mW@32Ω 3.5mm PO: 100mW@32Ω
ASIO YES YES YES
PC Drive YES YES YES