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USB-C DONGLE

TempoTec Sonata HD III

A USB-C dongle with a 3.5 mm output.

Manufacturer page

POWER AT 32 Ω70mW3.5 mm, per channel not stated
OUTPUT IMPEDANCENot statedNo data from the manufacturer
SNRNot statedNo data from the manufacturer
PRICE$45.90Lowest price at TempoTec store
OUTPUTS3.5 mm
DAC CHIPNot stated
PARAMETRIC EQNot statedTempoTec 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
Product page: 70 mW at 32 Ω, per channel or both channels not stated
Output impedance -
THD+N-105 dB

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

A 70 mW headline is present, but the load-qualified rows print 70 MW/32 Ω. We do not silently repair the unit or combine separate claims into a verified power rating.

The manufacturer prints SNR as −120 dB. This value is not sign-corrected or used for comparison.

Is it enough for your headphones?

TempoTec rates the Sonata HD III 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.

TempoTec store · official store price for the Android version, checked 20 Oct 2026$45.90

Compare prices on Soundblooms Deals

The device

From TempoTec's spec sheet unless marked
InputUSB-C
FormatsPCM up to 32-bit / 384 kHz, DSD256 native
VolumeHardware plus/minus button
BuildZinc alloy
Parametric EQNo data from the manufacturer. Not supported in Contour.
Sizewidth: 46; height: 20; depth: 10 mm

The manufacturer specifies CS43131 in the main table but ES9218 in a lower section. No documented hardware revision reconciles the two chip names.

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+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, $34.59iBasso DC03PRO: 98 mW at 32 Ω, $69iBasso DC05: 93 mW at 32 Ω, $69Hidizs S3 PRO: 55 mW at 32 Ω, $39.99S3 PROHidizs S9: 125 mW at 32 Ω, $49.99Hidizs 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, $59.99Hidizs SD2: 70 mW at 32 Ω, $35.99SD2Hidizs XO: 195 mW at 32 Ω, $40.99MOONDROP DAWN PRO 2: 62 mW at 32 Ω, $59.99DAWN PRO 2HiBy 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, $29.99TempoTec Sonata HD III50 mW100 mW200 mW10 mW$30$50$70scale 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, $59.99KA1FiiO KA2: 153 mW at 32 Ω, $34.59iBasso DC03PRO: 98 mW at 32 Ω, $69iBasso DC05: 93 mW at 32 Ω, $69DC05Hidizs S3 PRO: 55 mW at 32 Ω, $39.99S3 PROHidizs S9: 125 mW at 32 Ω, $49.99Hidizs 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, $59.99Hidizs SD2: 70 mW at 32 Ω, $35.99SD2Hidizs XO: 195 mW at 32 Ω, $40.99MOONDROP DAWN PRO 2: 62 mW at 32 Ω, $59.99DAWN PRO 2HiBy 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, $29.99TempoTec Sonata HD III
  • Nearby
  • Most IEMs, 3.2 mW

Compared with

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

TempoTec Sonata HD III vs JCALLY AP7

JCALLY AP7 is among the dongles in the catalog closest to TempoTec Sonata HD III in price: at 32 Ω TempoTec Sonata HD III is listed at 70 mW and JCALLY AP7 at 70 mW; the lowest prices are $45.90 and ~$45.73.

TempoTec Sonata HD III vs JCALLY AP7: the manufacturers' stated figures and today's lowest price, side by side
TempoTec Sonata HD IIIJCALLY AP7
Power at 32 Ω70 mW3.5 mm, socket not printed; the only headphone output70 mW3.5 mm, socket not printed; the only headphone output
Price today$45.90TempoTec store, 20 Oct~$45.73AliExpress, 7 Nov
DAC chipNot statedAKM AK4377ECB
InputsUSB-CUSB-C
Outputs3.5 mm3.5 mm
Sizewidth: 46; height: 20; depth: 10 mm39.5 × 13.85 × 6.8 mm
WeightNot statedAbout 4 g

TempoTec Sonata HD III vs JCALLY JM30 PRO

JCALLY JM30 PRO is among the dongles in the catalog closest to TempoTec Sonata HD III in price: at 32 Ω TempoTec Sonata HD III is listed at 70 mW and JCALLY JM30 PRO at 31.25 mW; the lowest prices are $45.90 and ~$46.49.

TempoTec Sonata HD III vs JCALLY JM30 PRO: the manufacturers' stated figures and today's lowest price, side by side
TempoTec Sonata HD IIIJCALLY JM30 PRO
Power at 32 Ω70 mW3.5 mm, socket not printed; the only headphone output31.25 mW3.5 mm, intro: up to 31.25mW under a 32Ω load, socket not printed; the only headphone output
Price today$45.90TempoTec store, 20 Oct~$46.49AliExpress, 7 Nov
DAC chipNot statedCS43131
InputsUSB-CUSB-C
Outputs3.5 mm3.5 mm
Sizewidth: 46; height: 20; depth: 10 mm130 ± 10 mm
WeightNot stated10 g

TempoTec Sonata HD III vs HiBy FC4

HiBy FC4 is among the dongles in the catalog closest to TempoTec Sonata HD III in price: at 32 Ω TempoTec Sonata HD III is listed at 70 mW and HiBy FC4 at 340 mW; the lowest prices are $45.90 and $49, $3.10 apart.

TempoTec Sonata HD III vs HiBy FC4: the manufacturers' stated figures and today's lowest price, side by side
TempoTec Sonata HD IIIHiBy FC4
Power at 32 Ω70 mW3.5 mm, socket not printed; the only headphone output340 mW4.4 mm balanced
Price today$45.90TempoTec store, 20 Oct$49HiBy store, 16 Oct
DAC chipNot statedESS ES9219 × 2
InputsUSB-CUSB-C
Outputs3.5 mm3.5 mm · 4.4 mm balanced
Sizewidth: 46; height: 20; depth: 10 mm65.3 × 22.1 × 11.9 mm
WeightNot stated21.7 g

HiBy FC4 price history

More like this

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Sources

Checked 14 Oct 2026
TempoTec Sonata HD III specifications
tempotec.net · the spec sheet
Used for output voltage, noise and distortion, formats, input, outputs, controls, microphone, size and build
TempoTec Sonata HD III product
tempotec.net · the product page