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QCY H3S vs Tronsmart KH03: which should you buy?

On aggregated review scores the QCY H3S comes out ahead with a HearWiki score of 81. The full breakdown - sub-scores, specs and what reviewers actually said - is below.

Our pick: QCY H3S - Outstanding overall at around $34.

Score breakdown

Each axis is a 0–10 blend of what reviewers scored, not a lab measurement.

QCY H3S leads on 6 of 7 measures.

  • QCY H3S
  • Tronsmart KH03
HearWiki score
81
63
Sound
7.5
6.0
Noise cancelling
7.4
4.8
Battery
9.8
9.3
Calls
5.4
6.0
Value
9.5
7.2
Price (USD)
$34
$37

Generation & platform

The scores rank quality. This is the other question: is the newer one actually newer technology, or the same platform in a new shell?

New platform

QCY H3S (2025) against Tronsmart KH03 (2024). The QCY H3S is the newer platform here: Bluetooth 6.0 against 5.3, Top codec LDAC against AAC and ANC type Adaptive against Hybrid. It also adds Multipoint pairing.

  • H3S20251 yr newer
  • KH032024
What differsH3SKH03

Platform

Bluetooth
6.0
5.3
Top codec
LDAC
AAC
ANC type
Adaptive
Hybrid

Everyday features

Multipoint pairing
Yes
No

Level on: USB-C.

Specifications

H3SKH03
Type
Over-Ear
Over-Ear
Price (USD)
$34
$37
HearWiki score
81
63
Released
2025
2024
Availability
Sold new
Discontinued
Driver
2-driver hybrid
40 mm dynamic
Driver type
hybrid
dynamic
Driver size
40 mm
40 mm
Drivers per side
2
1
Frequency response
20 Hz - 40 kHz
20 Hz - 20 kHz
Impedance
32 Ω
-
Bluetooth
6.0
5.3
Codecs
AAC, LDAC
SBC, AAC
Multipoint pairing
Yes
No
Wireless range
10 m
-
Battery life
102 h
70 h
Battery life (ANC on)
58 h
70 h
Full charge time
120 min
150 min
Quick charge
10 min → 7 h
-
Wireless charging
No
No
Active noise cancelling
Yes
Yes
ANC type
adaptive
hybrid
Transparency mode
-
No
Companion app
-
No
Custom EQ
-
No
Wear detection
-
No
Controls
buttons
buttons
Voice assistant
Yes
-
Weight
240 g
244 g
Water resistance
none
none
Foldable
Yes
-
Detachable cable
-
Yes
USB-C
Yes
Yes
Connector
-
3.5 mm
Microphones
7
1

What reviewers said

QCY H3S

The QCY H3S is a budget-friendly over-ear wireless headphone that packs adaptive active noise cancellation, a hybrid dual-driver setup, and support for LDAC and Bluetooth 6.0. Its foldable design and lightweight build add to its portability and convenience.

  • Pro:Effective adaptive ANC for the price
  • Pro:LDAC and AAC codec support for high-quality audio
  • Pro:Multipoint connectivity and Bluetooth 6.0
  • Con:No water resistance rating
  • Con:No wireless charging support
  • Con:Controls are button-based, not touch

Tronsmart KH03

The Tronsmart KH03 is an affordable wireless over-ear headphone aimed at younger listeners, featuring hybrid active noise cancellation and a claimed 70-hour battery life. It offers a comfortable fit and straightforward button controls, though it lacks app support, transparency mode, and multipoint connectivity. Its 40mm drivers deliver sound via SBC and AAC codecs over Bluetooth 5.3, with a wired 3.5mm option available.

  • Pro:Effective hybrid ANC for the price
  • Pro:Very long 70-hour battery life
  • Pro:Comfortable fit for extended use
  • Con:No app support or custom EQ
  • Con:No transparency mode or multipoint
  • Con:Relatively heavy at 244 grams for kids

Summaries are AI-condensed and paraphrased from published reviews and specs - not original hands-on testing. More on our method.

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