HIDIZS S9 Pro Plus Review

從 S9 到 S9 Pro，如今是 S9 Pro Plus，已是第三代產品，而今次的升級也比較明顯，最易見的就是外殼設計也完全不同了，比上代 S9 Pro 的體型大了不少，外殼仍是鋁合金 CNC 一體製作而成，而今次不再是簡單的長方體，在兩側加入了斜面設計，使外型更有立體感。

S9 Pro Plus 的輸出力使用 3.5mm 輸出時為 138mW + 138mW@32Ω，而在 4.4mm 平衡輸出為 180mW + 180mW@32Ω，3.5mm 輸出比上一代是明顯更高，而平衡輸出側稍為降低了一點，不過平衡輸出本身有線路優勢，影響不會太大。而在平衡輸出的訊噪比與失真率，規格上都有所進步。

而在今次升級中，還加入了數碼濾波的功能，同是使用這兩個按鈕，同時按下轉換，共有 6 種表現方式，其實都是在 12kHz 以上的高頻，作出不同緩急程度及幅度的過濾，得出音色上的變化，而不同的濾波會以不同的顏色顯示。

試聽使用 Hidizs MP145 平板震膜耳機，一放入耳的確幾有驚艷感覺，不是它有超高的分析力，而是因為它的聲音十分柔和優美，與印象中的 ESS 系音色稍為不同。當然，其實它的分析力也很好，可見 Hidizs 相當用心去調聲。高頻沒有刺耳感覺，低頻延伸也到位。試聽萬芳的〈試著了解〉，副歌段落也聽得聲音中那微細的震動，人聲很有立體感。再聽《鬼滅之刃交響曲》的〈鬼殺隊〉，24bit/96kHz 的細節還有空間感都有表現出來，而且幾下大鼓低頻呈現的深度也叫人十分滿意。

总而言之，Hidizs S9 Pro Plus 是叫人十分滿意的小型 USB DAC 耳擴，回看之前兩代，由 Pro 到 Pro Plus 的升級是頗大的一步，會覺得 S9 的第一次進級才是 Plus，今次才稱得上是 Pro，音色表現亦叫人感到廠方的誠意。

BUY NOW: HIDIZS S9 Pro Plus Martha

To view the full article, please click here.

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 S9 Pro Plus Review - SPILL

Reading next