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USB-C DONGLE · ES9281C PRO

Hidizs S3 PRO

A USB-C dongle with an ES9281C PRO DAC chip, a 3.5 mm output. About 6 g.

Manufacturer page

POWER AT 32 Ω55mW3.5 mm
OUTPUT IMPEDANCENot statedNo data from the manufacturer
SNR117dBas Hidizs states it
PRICE$39.99Lowest price at Hidizs store
OUTPUTS3.5 mm
DAC CHIPES9281C PRO
PARAMETRIC EQNot statedHidizs lists none
CONTOURNot supported

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

Outputs and power

3.5 mm
55mWat 32 Ω per channel
Spec sheet: 55 mW, printed LR 55mW
Output impedance -
SNR117 dB
THD+N0.0008%

Not stated: gain, supply voltage, crosstalk.

Is it enough for your headphones?

Hidizs rates the S3 PRO at 55 mW into 32 Ω. 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. 28 mW at 16 Ω+16 dB
Most IEMsTypical in-ears, 16 to 50 Ω
needs 3.2 mW55 mW at 32 Ω+12 dB
Easy-to-drive headphonesClosed and portable, 32 Ω
needs 16 mW55 mW at 32 Ω+5 dB
Hard-to-drive headphones300 Ω, HD 600 class, hungry for voltage
needs 20 mWest. 5.9 mW at 300 Ω5 dB short
Most planarsPlanar magnetic, low impedance, need current
needs 50 mW55 mW at 32 Ω+0.4 dB
Demanding planarsThe hardest loads, desktop territory
needs 251 mWest. 29 mW at 60 Ω9 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 for the Standard (no LT03 adapter), checked 16 Oct 2026$39.99

Compare prices on Soundblooms Deals

The device

From Hidizs's spec sheet unless marked
InputUSB-C
FormatsPCM up to 32-bit / 384 kHz, DSD128
DAC chipES9281C PRO
Parametric EQNo data from the manufacturer. Not supported in Contour.
Size20 × 10 × 90 mm
WeightAbout 6 g

How it stacks up against the competition

Power at 32 Ω · price in US dollars
20 mW50 mW100 mW10 mW$30$50$70scale breaks hereMost IEMs need 3.2 mW+12 dB to spareQuestyle M12i: 21 mW at 32 Ω, $49TANCHJIM SPACE LITE: 98 mW at 32 Ω, $39.99FiiO KA1: 45 mW at 32 Ω, $59.99KA1FiiO KA2: 153 mW at 32 Ω, $34.59iBasso DC03PRO: 98 mW at 32 Ω, $69iBasso DC05: 93 mW at 32 Ω, $69Hidizs S9: 125 mW at 32 Ω, $49.99Hidizs S9 Pro Plus Martha: 180 mW at 32 Ω, $65.99Hidizs S8 Pro Robin: 160 mW at 32 Ω, $59.99Hidizs SD2: 70 mW at 32 Ω, $35.99SD2MOONDROP DAWN PRO 2: 62 mW at 32 Ω, $59.99TempoTec Sonata HD III: 70 mW at 32 Ω, $45.90HiBy FC3: 70 mW at 32 Ω, $39iFi GO link: 70 mW at 32 Ω, $59GO linkJCALLY AP7: 70 mW at 32 Ω, ~$45.73AP7JCALLY JM20: 31.3 mW at 32 Ω, ~$31.64JCALLY JM20 PRO: 31.3 mW at 32 Ω, ~$35.46JCALLY JM30: 31.3 mW at 32 Ω, ~$27JCALLY JM30L: 31.3 mW at 32 Ω, $26.99JCALLY JM30PRO: 31.3 mW at 32 Ω, ~$46.49JCALLY JM45: 20 mW at 32 Ω, ~$26.50JCALLY JM45L: 20 mW at 32 Ω, ~$28.45JCALLY JM80E: 45 mW at 32 Ω, $39JM80EJCALLY SP30: 31.3 mW at 32 Ω, ~$54.61NiceHCK NK1 Ultra: 122 mW at 32 Ω, $29.99FiiO JIEZI B: 34 mW at 32 Ω, $22.99Hidizs S3 PRO20 mW50 mW100 mW10 mW$30$50$70scale breaks hereMost IEMs need 3.2 mW+12 dB to spareQuestyle M12i: 21 mW at 32 Ω, $49TANCHJIM SPACE LITE: 98 mW at 32 Ω, $39.99SPACE LITEFiiO KA1: 45 mW at 32 Ω, $59.99KA1FiiO KA2: 153 mW at 32 Ω, $34.59iBasso DC03PRO: 98 mW at 32 Ω, $69iBasso DC05: 93 mW at 32 Ω, $69Hidizs S9: 125 mW at 32 Ω, $49.99Hidizs S9 Pro Plus Martha: 180 mW at 32 Ω, $65.99Hidizs S8 Pro Robin: 160 mW at 32 Ω, $59.99Hidizs SD2: 70 mW at 32 Ω, $35.99SD2MOONDROP DAWN PRO 2: 62 mW at 32 Ω, $59.99DAWN PRO 2TempoTec Sonata HD III: 70 mW at 32 Ω, $45.90Sonata HD IIIHiBy FC3: 70 mW at 32 Ω, $39FC3iFi GO link: 70 mW at 32 Ω, $59GO linkJCALLY AP7: 70 mW at 32 Ω, ~$45.73AP7JCALLY JM20: 31.3 mW at 32 Ω, ~$31.64JCALLY JM20 PRO: 31.3 mW at 32 Ω, ~$35.46JM20 PROJCALLY JM30: 31.3 mW at 32 Ω, ~$27JCALLY JM30L: 31.3 mW at 32 Ω, $26.99JCALLY JM30PRO: 31.3 mW at 32 Ω, ~$46.49JCALLY JM45: 20 mW at 32 Ω, ~$26.50JCALLY JM45L: 20 mW at 32 Ω, ~$28.45JCALLY JM80E: 45 mW at 32 Ω, $39JM80EJCALLY SP30: 31.3 mW at 32 Ω, ~$54.61NiceHCK NK1 Ultra: 122 mW at 32 Ω, $29.99FiiO JIEZI B: 34 mW at 32 Ω, $22.99Hidizs S3 PRO
  • Nearby
  • Same DAC chip
  • Most IEMs, 3.2 mW

Compared with

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

Hidizs S3 PRO vs JCALLY AP6

JCALLY AP6 is among the dongles in the catalog closest to Hidizs S3 PRO in price: at 32 Ω Hidizs S3 PRO is listed at 55 mW and JCALLY AP6 at ≈440 mW; the lowest prices are $39.99 and $39.99.

Hidizs S3 PRO vs JCALLY AP6: the manufacturers' stated figures and today's lowest price, side by side
Hidizs S3 PROJCALLY AP6
Power at 32 Ω55 mW3.5 mm, printed LR 55mW≈440 mW4.4 mm balanced
Power at 16 ΩNot stated≈540 mW4.4 mm balanced
Power at 300 ΩNot stated≈51 mW4.4 mm balanced
Price today$39.99Hidizs store, 16 Oct$39.99Hangout Audio, 7 Nov
DAC chipES9281C PROConexant CX31993
InputsUSB-CUSB-C
Outputs3.5 mm3.5 mm · 4.4 mm balanced
Size20 × 10 × 90 mm38.7 × 19.9 × 12.8 mm
WeightAbout 6 g13.5 g

JCALLY AP6 price history

Hidizs S3 PRO vs Snowsky Melody

Snowsky Melody is among the dongles in the catalog closest to Hidizs S3 PRO in price: at 32 Ω Hidizs S3 PRO is listed at 55 mW and Snowsky Melody at >250 mW; the lowest prices are $39.99 and $39.99.

Hidizs S3 PRO vs Snowsky Melody: the manufacturers' stated figures and today's lowest price, side by side
Hidizs S3 PROSnowsky Melody
Power at 32 Ω55 mW3.5 mm, printed LR 55mW>250 mW4.4 mm balanced
Price today$39.99Hidizs store, 16 Oct$39.99Amazon US, 16 Oct
DAC chipES9281C PROCS43131 × 2
InputsUSB-CUSB-C
Outputs3.5 mm3.5 mm · 4.4 mm balanced
Size20 × 10 × 90 mmAbout 42 × 22.5 × 11.5 mm
WeightAbout 6 gAbout 10 g

Snowsky Melody price history

Hidizs S3 PRO vs TANCHJIM SPACE LITE

TANCHJIM SPACE LITE is among the dongles in the catalog closest to Hidizs S3 PRO in price: at 32 Ω Hidizs S3 PRO is listed at 55 mW and TANCHJIM SPACE LITE at 98 mW; the lowest prices are $39.99 and $39.99.

Hidizs S3 PRO vs TANCHJIM SPACE LITE: the manufacturers' stated figures and today's lowest price, side by side
Hidizs S3 PROTANCHJIM SPACE LITE
Power at 32 Ω55 mW3.5 mm, printed LR 55mW98 mW3.5 mm, socket not printed; the only headphone output
Power at 16 ΩNot stated105 mW3.5 mm, socket not printed; the only headphone output
Price today$39.99Hidizs store, 16 Oct$39.99eBay, 16 Oct
DAC chipES9281C PROCS43131
InputsUSB-CUSB-C
Outputs3.5 mm3.5 mm
Size20 × 10 × 90 mm37.5 × 13.7 × 10 mm
WeightAbout 6 g10.9 g

More like this

More portable DAC amps

Sources

Checked 14 Oct 2026
Hidizs S3 PRO specifications
hidizs.net · the spec sheet
Used for power, noise and distortion, formats, the DAC chip, input, outputs, size and weight