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USB-C DONGLE · AK4493EQ

Hidizs S9

A USB-C dongle with an AK4493EQ DAC chip, a 3.5 mm and a 2.5 mm balanced output. Weight 11 g.

Manufacturer page

POWER AT 32 Ω125mW2.5 mm balanced
OUTPUT IMPEDANCE<1Ω3.5 mm; 2.5 mm <1 Ω
SNRNot statedNo data from the manufacturer
PRICE$49.99Lowest price at Hidizs store
OUTPUTS3.5 mm · 2.5 mm balanced
DAC CHIPAK4493EQ
PARAMETRIC EQNot statedHidizs lists none
CONTOURNot supported

Numbers are the manufacturer's stated figures unless marked as measured; sources linked below.

Outputs and power

2.5 mm balanced
125mWat 32 Ω per channel
Spec sheet: 125 mW
Output impedance <1 Ω
3.5 mm
90mWat 32 Ω per channel
Spec sheet: 90 mW
Output impedance <1 Ω

Not stated: gain, supply voltage, SNR, distortion, crosstalk.

The balanced output is rated 125 + 125 mW into 32 Ω in the performance specification, but 120 mW into 32 Ω in the comparison table. Single-ended power is unaffected. No cause for the balanced discrepancy is documented.

Is it enough for your headphones?

Hidizs rates the S9 at 125 mW into 32 Ω from the 2.5 mm balanced output. Below is how much of that is left to spare for each kind of headphones when you listen loud, with peaks at 110 dB. A figure marked est. is worked out from that rating.

Sensitive IEMsMulti-driver sets that hiss on strong sources
needs 0.6 mWest. 63 mW at 16 Ω+20 dB
Most IEMsTypical in-ears, 16 to 50 Ω
needs 3.2 mW125 mW at 32 Ω+16 dB
Easy-to-drive headphonesClosed and portable, 32 Ω
needs 16 mW125 mW at 32 Ω+9 dB
Hard-to-drive headphones300 Ω, HD 600 class, hungry for voltage
needs 20 mWest. 13 mW at 300 Ω2 dB short
Most planarsPlanar magnetic, low impedance, need current
needs 50 mW125 mW at 32 Ω+4 dB
Demanding planarsThe hardest loads, desktop territory
needs 251 mWest. 67 mW at 60 Ω6 dB short

Where to buy

Some shop links are affiliate links: if you buy through one, I may earn a commission. Your price and the order stay the same.

Hidizs store · official store price, checked 16 Oct 2026$49.99

Compare prices on Soundblooms Deals

The device

From Hidizs's spec sheet unless marked
InputUSB-C
FormatsPCM up to 32-bit / 768 kHz, DSD512 native
DAC chipAK4493EQ
Parametric EQNo data from the manufacturer. Not supported in Contour.
Weight11 g

How it stacks up against the competition

Power at 32 Ω · price in US dollars
50 mW100 mW200 mW10 mW$30$50$70scale breaks hereMost IEMs need 3.2 mW+16 dB to spareFiiO KA11: 200 mW at 32 Ω, $29.99Questyle M12i: 21 mW at 32 Ω, $49MOONDROP DAWN 4.4: 230 mW at 32 Ω, $69.99TANCHJIM SPACE LITE: 98 mW at 32 Ω, $39.99SPACE LITEFiiO KA1: 45 mW at 32 Ω, $59.99FiiO KA2: 153 mW at 32 Ω, $34.59KA2Snowsky Melody: 250 mW at 32 Ω, $39.99iBasso DC03PRO: 98 mW at 32 Ω, $69DC03PROiBasso DC05: 93 mW at 32 Ω, $69DC05Hidizs S3 PRO: 55 mW at 32 Ω, $39.99Hidizs S9 PRO: 200 mW at 32 Ω, $65.99Hidizs S9 Pro Plus Martha: 180 mW at 32 Ω, $65.99Hidizs S8 Pro Robin: 160 mW at 32 Ω, $59.99S8 Pro RobinHidizs SD2: 70 mW at 32 Ω, $35.99Hidizs XO: 195 mW at 32 Ω, $40.99XOMOONDROP DAWN PRO 2: 62 mW at 32 Ω, $59.99TempoTec Sonata BHD Pro: 280 mW at 32 Ω, $59.90TempoTec Sonata HD III: 70 mW at 32 Ω, $45.90Shanling UA2: 195 mW at 32 Ω, $85HiBy FC3: 70 mW at 32 Ω, $39HiBy FC4: 340 mW at 32 Ω, $49iFi GO link: 70 mW at 32 Ω, $59iFi GO link Max: 241 mW at 32 Ω, $79CrinEar Protocol Max: 300 mW at 32 Ω, $76.49 (lowest offer on /deals today)TRN Black Pearl: 320 mW at 32 Ω, $31.44 (lowest offer on /deals today)JCALLY AP7: 70 mW at 32 Ω, ~$45.73JCALLY JM20: 31.3 mW at 32 Ω, ~$31.64JCALLY JM20 PRO: 31.3 mW at 32 Ω, ~$35.46JCALLY JM20MAX: 195 mW at 32 Ω, $29.99JCALLY JM30PRO: 31.3 mW at 32 Ω, ~$46.49JCALLY JM80E: 45 mW at 32 Ω, $39JCALLY JM98MAX: 195 mW at 32 Ω, $34.99JCALLY SP30: 31.3 mW at 32 Ω, ~$54.61NiceHCK NK1 Ultra: 122 mW at 32 Ω, $29.99NK1 UltraNiceHCK PureAural: 210 mW at 32 Ω, $59.99Hidizs S950 mW100 mW200 mW10 mW$30$50$70scale breaks hereMost IEMs need 3.2 mW+16 dB to spareFiiO KA11: 200 mW at 32 Ω, $29.99Questyle M12i: 21 mW at 32 Ω, $49MOONDROP DAWN 4.4: 230 mW at 32 Ω, $69.99TANCHJIM SPACE LITE: 98 mW at 32 Ω, $39.99SPACE LITEFiiO KA1: 45 mW at 32 Ω, $59.99FiiO KA2: 153 mW at 32 Ω, $34.59KA2Snowsky Melody: 250 mW at 32 Ω, $39.99iBasso DC03PRO: 98 mW at 32 Ω, $69DC03PROiBasso DC05: 93 mW at 32 Ω, $69DC05Hidizs S3 PRO: 55 mW at 32 Ω, $39.99Hidizs S9 PRO: 200 mW at 32 Ω, $65.99S9 PROHidizs S9 Pro Plus Martha: 180 mW at 32 Ω, $65.99S9 Pro Plus MarthaHidizs S8 Pro Robin: 160 mW at 32 Ω, $59.99S8 Pro RobinHidizs SD2: 70 mW at 32 Ω, $35.99Hidizs XO: 195 mW at 32 Ω, $40.99XOMOONDROP DAWN PRO 2: 62 mW at 32 Ω, $59.99TempoTec Sonata BHD Pro: 280 mW at 32 Ω, $59.90TempoTec Sonata HD III: 70 mW at 32 Ω, $45.90Shanling UA2: 195 mW at 32 Ω, $85HiBy FC3: 70 mW at 32 Ω, $39HiBy FC4: 340 mW at 32 Ω, $49iFi GO link: 70 mW at 32 Ω, $59iFi GO link Max: 241 mW at 32 Ω, $79CrinEar Protocol Max: 300 mW at 32 Ω, $76.49 (lowest offer on /deals today)TRN Black Pearl: 320 mW at 32 Ω, $31.44 (lowest offer on /deals today)JCALLY AP7: 70 mW at 32 Ω, ~$45.73JCALLY JM20: 31.3 mW at 32 Ω, ~$31.64JCALLY JM20 PRO: 31.3 mW at 32 Ω, ~$35.46JCALLY JM20MAX: 195 mW at 32 Ω, $29.99JCALLY JM30PRO: 31.3 mW at 32 Ω, ~$46.49JCALLY JM80E: 45 mW at 32 Ω, $39JCALLY JM98MAX: 195 mW at 32 Ω, $34.99JCALLY SP30: 31.3 mW at 32 Ω, ~$54.61NiceHCK NK1 Ultra: 122 mW at 32 Ω, $29.99NK1 UltraNiceHCK PureAural: 210 mW at 32 Ω, $59.99PureAuralHidizs S9
  • Nearby
  • Same DAC chip
  • Most IEMs, 3.2 mW

Compared with

Manufacturers' stated figures; the price is today's lowest

Hidizs S9 vs Hidizs S9 PRO

At 32 Ω Hidizs S9 is listed at 125 mW and Hidizs S9 PRO at 200 mW; the lowest prices are $49.99 and $65.99, $16 apart.

Hidizs S9 vs Hidizs S9 PRO: the manufacturers' stated figures and today's lowest price, side by side
Hidizs S9Hidizs S9 PRO
Power at 32 Ω125 mW2.5 mm balanced200 mW2.5 mm balanced, THD 0.0006% @32Ω, printed L&R
Price today$49.99Hidizs store, 16 Oct$65.99Hidizs store, 16 Oct
DAC chipAK4493EQESS9038Q2M
InputsUSB-CUSB-C
Outputs3.5 mm · 2.5 mm balanced3.5 mm · 2.5 mm balanced
SizeNot stated59 × 18 × 8 mm
Weight11 g11 g

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Sources

Checked 14 Oct 2026
Hidizs S9 specifications
hidizs.com · the spec sheet
Used for power, output impedance, formats, the DAC chip, input, outputs, compatibility, weight and firmware upgrade