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USB-C DONGLE · ES9270

Hidizs SD2

A USB-C dongle with an ES9270 DAC chip, a 3.5 mm output. Weight 6 g.

Manufacturer page

POWER AT 32 Ω70mW3.5 mm
OUTPUT IMPEDANCENot statedNo data from the manufacturer
SNR118dB32 Ω
PRICE$35.99Lowest price at Hidizs store
OUTPUTS3.5 mm
DAC CHIPES9270
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
70mWat 32 Ω per channel
Spec sheet: 70 mW, printed 70mW + 70mW, THD 0.0015% @32Ω, manufacturer wording: maximum
Output impedance -
SNR118 dB

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

Is it enough for your headphones?

Hidizs rates the SD2 at 70 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. 35 mW at 16 Ω+17 dB
Most IEMsTypical in-ears, 16 to 50 Ω
needs 3.2 mW70 mW at 32 Ω+13 dB
Easy-to-drive headphonesClosed and portable, 32 Ω
needs 16 mW70 mW at 32 Ω+6 dB
Hard-to-drive headphones300 Ω, HD 600 class, hungry for voltage
needs 20 mWest. 7.5 mW at 300 Ω4 dB short
Most planarsPlanar magnetic, low impedance, need current
needs 50 mW70 mW at 32 Ω+1 dB
Demanding planarsThe hardest loads, desktop territory
needs 251 mWest. 37 mW at 60 Ω8 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 MS1-Galaxy bundle), checked 16 Oct 2026$35.99

Compare prices on Soundblooms Deals

The device

From Hidizs's spec sheet unless marked
InputUSB-C
FormatsPCM up to 32-bit / 384 kHz, DSD128 native
DAC chipES9270
Parametric EQNo data from the manufacturer. Not supported in Contour.
Size34.5 × 20 × 10 mm
Weight6 g

How it stacks up against the competition

Power at 32 Ω · price in US dollars
50 mW100 mW200 mW10 mW$30$50scale breaks hereMost IEMs need 3.2 mW+13 dB to spareFiiO KA11: 200 mW at 32 Ω, $29.99Questyle M12i: 21 mW at 32 Ω, $49TANCHJIM SPACE LITE: 98 mW at 32 Ω, $39.99SPACE LITEFiiO KA1: 45 mW at 32 Ω, $59.99FiiO KA2: 153 mW at 32 Ω, $34.59Hidizs S3 PRO: 55 mW at 32 Ω, $39.99S3 PROHidizs S9: 125 mW at 32 Ω, $49.99Hidizs S8 Pro Robin: 160 mW at 32 Ω, $59.99Hidizs XO: 195 mW at 32 Ω, $40.99MOONDROP 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, $39FC3iFi GO link: 70 mW at 32 Ω, $59JCALLY 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 JM20MAX: 195 mW at 32 Ω, $29.99JCALLY 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 JM98MAX: 195 mW at 32 Ω, $34.99JCALLY SP30: 31.3 mW at 32 Ω, ~$54.61NiceHCK NK1 Ultra: 122 mW at 32 Ω, $29.99FiiO JIEZI B: 34 mW at 32 Ω, $22.99Hidizs SD250 mW100 mW200 mW10 mW$30$50scale breaks hereMost IEMs need 3.2 mW+13 dB to spareFiiO KA11: 200 mW at 32 Ω, $29.99Questyle M12i: 21 mW at 32 Ω, $49TANCHJIM SPACE LITE: 98 mW at 32 Ω, $39.99SPACE LITEFiiO KA1: 45 mW at 32 Ω, $59.99FiiO KA2: 153 mW at 32 Ω, $34.59Hidizs S3 PRO: 55 mW at 32 Ω, $39.99S3 PROHidizs S9: 125 mW at 32 Ω, $49.99S9Hidizs S8 Pro Robin: 160 mW at 32 Ω, $59.99Hidizs XO: 195 mW at 32 Ω, $40.99MOONDROP 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, ~$35.46JCALLY JM20MAX: 195 mW at 32 Ω, $29.99JCALLY 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 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 UltraFiiO JIEZI B: 34 mW at 32 Ω, $22.99Hidizs SD2
  • Nearby
  • Same DAC chip
  • Most IEMs, 3.2 mW

Devices with the same DAC chip

ES9270 · 2 devices use it
JCALLYJM35L

All 2 in the finder

Compared with

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

Hidizs SD2 vs JCALLY JM20 PRO

JCALLY JM20 PRO is among the dongles in the catalog closest to Hidizs SD2 in price: at 32 Ω Hidizs SD2 is listed at 70 mW and JCALLY JM20 PRO at 31.25 mW; the lowest prices are $35.99 and ~$35.46.

Hidizs SD2 vs JCALLY JM20 PRO: the manufacturers' stated figures and today's lowest price, side by side
Hidizs SD2JCALLY JM20 PRO
Power at 32 Ω70 mW3.5 mm, THD 0.0015% @32Ω, manufacturer wording: maximum, printed 70mW + 70mW31.25 mW3.5 mm, socket not printed; the only headphone output
Price today$35.99Hidizs store, 16 Oct~$35.46AliExpress, 7 Nov
DAC chipES9270CS43131
InputsUSB-CUSB-C
Outputs3.5 mm3.5 mm
Size34.5 × 20 × 10 mm110 ± 10 mm
Weight6 g6.5 g

Hidizs SD2 vs JCALLY JM98MAX

JCALLY JM98MAX is among the dongles in the catalog closest to Hidizs SD2 in price: at 32 Ω Hidizs SD2 is listed at 70 mW and JCALLY JM98MAX at ≈195 mW; the lowest prices are $35.99 and $34.99, $1 apart.

Hidizs SD2 vs JCALLY JM98MAX: the manufacturers' stated figures and today's lowest price, side by side
Hidizs SD2JCALLY JM98MAX
Power at 32 Ω70 mW3.5 mm, THD 0.0015% @32Ω, manufacturer wording: maximum, printed 70mW + 70mW≈195 mW3.5 mm, socket not printed; the only headphone output
Power at 16 ΩNot stated≈235 mW3.5 mm, socket not printed; the only headphone output
Power at 300 ΩNot stated≈21 mW3.5 mm, socket not printed; the only headphone output
Price today$35.99Hidizs store, 16 Oct$34.99X, 7 Nov
DAC chipES9270Cirrus Logic CS43198
InputsUSB-CUSB-C
Outputs3.5 mm3.5 mm
Size34.5 × 20 × 10 mm110 ± 10 mm
Weight6 g8.8 g

Hidizs SD2 vs FiiO KA2

FiiO KA2 is among the dongles in the catalog closest to Hidizs SD2 in price: at 32 Ω Hidizs SD2 is listed at 70 mW and FiiO KA2 at ≥153 mW; the lowest prices are $35.99 and $34.59, $1.40 apart.

Hidizs SD2 vs FiiO KA2: the manufacturers' stated figures and today's lowest price, side by side
Hidizs SD2FiiO KA2
Power at 32 Ω70 mW3.5 mm, THD 0.0015% @32Ω, manufacturer wording: maximum, printed 70mW + 70mW≥153 mW4.4 mm balanced
Price today$35.99Hidizs store, 16 Oct$34.59eBay, 16 Oct
DAC chipES9270CS43131 × 2
InputsUSB-CUSB-C cable, Lightning cable
Outputs3.5 mm4.4 mm balanced
Size34.5 × 20 × 10 mmAbout 40 × 15 × 12 mm
Weight6 gAbout 12.3 g

More like this

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Sources

Checked 14 Oct 2026
Hidizs SD2 specifications
hidizs.net · the spec sheet
Used for power, noise and distortion, formats, the DAC chip, input, outputs, size and weight