HIDIZS ST2 PRO Review -RaavMedia

The HIDIZS ST2 Pro earphones feature a built-in USB-C DAC and deliver exceptional sound quality, making them perfect for audiophiles and general listeners alike. The unboxing includes the earphones, a pouch, a braided cable, ear tips, and a USB-C to USB-A adapter. The design is modular, and the earphones offer a secure fit, ideal for exercise or running.

The sound quality is impressive, with well-defined bass and balanced audio that even at high volume remains clear. The USB-C DAC significantly improves audio, providing high-resolution sound compared to Bluetooth earphones. They also feature an inline microphone and remote for calls and track control. The earphones work well for gaming and movie watching, with no lag and clear, immersive sound.

The ST2 Pro is set to launch on Kickstarter, and the reviewer highly recommends them for anyone looking for high-quality audio without needing advanced adjustments.

BUY NOW: HIDIZS ST2 PRO Nebula

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Comparison
Model	S9 PRO PLUS	S9 PRO
Product Type	Split Style	Split Style
DAC Chip	ESS9038Q2M	ESS9038Q2M
Headphone Jack	3.5mm+4.4mm	3.5mm+2.5mm
Physical Button	2	0
Sampling Rate Indicator Light	6	6
RGB LED Light	×	×
MQA	×	×
PCM 32bit/192kHz	√	√
PCM 32bit/384kHz	√	√
PCM 32bit/768kHz	√	√
DSD 64	√	√
DSD 128	√	√
DSD 256	√	√
DSD 512	√	√
ASIO	√	√
PC Drive	√	√
Switching Filter	√	×
SNR	3.5mm PO:123dB(@32Ω) 4.4mm BAL:120dB(@32Ω)	3.5mm PO:120dB(@32Ω) 2.5mm BAL:119dB(@32Ω)
Channel Separation	3.5mm PO:75dB(@32Ω) 4.4mm BAL:115dB(@32Ω)	3.5mm PO:80dB(@32Ω) 2.5mm BAL:118dB(@32Ω)
THD+N	3.5mm:0.0019%@32Ω 4.4mm:0.0008%@32Ω	3.5mm:0.0006%@32Ω 2.5mm:0.0012%@32Ω
Output Power	3.5mm PO:138mW@32Ω 4.4mm BAL:180mW@32Ω	3.5mm PO:100mW@32Ω 2.5mm BAL:200mW@32Ω
Frequency Response	20Hz-40kHz	20Hz-50kHz
Recommended Earphone Resistance Range		8-300Ω
Headphone with mic	Compatible	Compatible
Transmission interface	Type-C	Type-C
Power System	No need to charge. Plug and play	No need to charge. Plug and play
Shell Material	Aluminum alloy	Aluminum alloy
Color	Black, Silver, Blue	Black, Silver
Dimensions	55×25×11mm	59×18×8mm
Net weight	17g	11g
Supported System	Android, Windows, Mac OS, iPad OS, Harmony OS (Please note: a Lightning to Type-C cable with OTG function has to be purchased separately to support iOS)	Windows, Mac OS, iPad OS, Android, iOS (Please note: For iOS users, the Lightning OTG cable has to be purchased separately)
What's in the box	Hidizs S9 PRO PLUS x 1 Type-C to Type-C cable x 1 Type-C to USB-A adapter x 1 User manual x 1 Warranty card x 1	Hidizs S9 PRO DAC & AMP x 1 Type-C to Type-C cable x 1 Type-C to USB-A adapter x 1 Rear clip x 1 User manual x 1 Warranty card x 1

Comparison
Model	S9 PRO PLUS	S9 PRO
Product Type	Split Style	Split Style
DAC Chip	ESS9038Q2M	ESS9038Q2M
Headphone Jack	3.5mm+4.4mm	3.5mm+2.5mm
Physical Button	2	0
RGB LED Light	×	×
MQA	×	×
PCM 32bit/192kHz	√	√
PCM 32bit/384kHz	√	√
PCM 32bit/768kHz	√	√
DSD 64	√	√
DSD 128	√	√
DSD 256	√	√
DSD 512	√	√
ASIO	√	√
PC Drive	√	√
Switching Filter	√	×
SNR	3.5mm PO:123dB(@32Ω) 4.4mm BAL:120dB(@32Ω)	3.5mm PO:120dB(@32Ω) 2.5mm BAL:119dB(@32Ω)
Channel Separation	3.5mm PO:75dB(@32Ω) 4.4mm BAL:115dB(@32Ω)	3.5mm PO:80dB(@32Ω) 2.5mm BAL:118dB(@32Ω)
THD+N	3.5mm:0.0019%@32Ω 4.4mm:0.0008%@32Ω	3.5mm:0.0006%@32Ω 2.5mm:0.0012%@32Ω
Output Power	3.5mm PO:138mW@32Ω 4.4mm BAL:180mW@32Ω	3.5mm PO:100mW@32Ω 2.5mm BAL:200mW@32Ω
Frequency Response	20Hz-40kHz	20Hz-50kHz
Headphone with mic	Compatible	Compatible
Transmission interface	Type-C	Type-C
Power System	No need to charge. Plug and play	No need to charge. Plug and play
Shell Material	Aluminum alloy	Aluminum alloy
Color	Black, Silver, Blue	Black, Silver
Dimensions	55×25×11mm	59×18×8mm
Net weight	17g	11g
Supported System	Android, Windows, Mac OS, iPad OS, Harmony OS (Please note: a Lightning to Type-C cable with OTG function has to be purchased separately to support iOS)	Windows, Mac OS, iPad OS, Android, iOS (Please note: For iOS users, the Lightning OTG cable has to be purchased separately)
What's in the box	Hidizs S9 PRO PLUS x 1 Type-C to Type-C cable x 1 Type-C to USB-A adapter x 1 User manual x 1 Warranty card x 1	Hidizs S9 PRO DAC & AMP x 1 Type-C to Type-C cable x 1 Type-C to USB-A adapter x 1 Rear clip x 1 User manual x 1 Warranty card x 1

Comparison
Model	S9 PRO PLUS	S9 PRO
Product Type	Split Style	Split Style
DAC Chip	ESS9038Q2M	ESS9038Q2M
Headphone Jack	3.5mm+4.4mm	3.5mm+2.5mm
Physical Button	2	0
RGB LED Light	×	×
MQA	×	×
PCM 32bit/192kHz	√	√
PCM 32bit/384kHz	√	√
PCM 32bit/768kHz	√	√
DSD 64	√	√
DSD 128	√	√
DSD 256	√	√
DSD 512	√	√
ASIO	√	√
PC Drive	√	√
Switching Filter	√	×
SNR	3.5mm PO:123dB(@32Ω) 4.4mm BAL:120dB(@32Ω)	3.5mm PO:120dB(@32Ω) 2.5mm BAL:119dB(@32Ω)
Channel Separation	3.5mm PO:75dB(@32Ω) 4.4mm BAL:115dB(@32Ω)	3.5mm PO:80dB(@32Ω) 2.5mm BAL:118dB(@32Ω)
THD+N	3.5mm:0.0019%@32Ω 4.4mm:0.0008%@32Ω	3.5mm:0.0006%@32Ω 2.5mm:0.0012%@32Ω
Output Power	3.5mm PO:138mW@32Ω 4.4mm BAL:180mW@32Ω	3.5mm PO:100mW@32Ω 2.5mm BAL:200mW@32Ω
Frequency Response	20Hz-40kHz	20Hz-50kHz
Headphone with mic	Compatible	Compatible
Transmission interface	Type-C	Type-C
Power System	No need to charge. Plug and play	No need to charge. Plug and play
Shell Material	Aluminum alloy	Aluminum alloy
Color	Black, Silver, Blue	Black, Silver
Dimensions	55×25×11mm	59×18×8mm
Net weight	17g	11g
Supported System	Android, Windows, Mac OS, iPad OS, Harmony OS (Please note: a Lightning to Type-C cable with OTG function has to be purchased separately to support iOS)	Windows, Mac OS, iPad OS, Android, iOS (Please note: For iOS users, the Lightning OTG cable has to be purchased separately)
Packing List	Hidizs S9 PRO PLUS x 1 Type-C to Type-C cable x 1 Type-C to USB-A adapter x 1 User manual x 1 Warranty card x 1	Hidizs S9 PRO DAC & AMP x 1 Type-C to Type-C cable x 1 Type-C to USB-A adapter x 1 Rear clip x 1 User manual x 1 Warranty card x 1

HIDIZS ST2 PRO Review -RaavMedia

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