Short answer: the KZ ZS10 Pro. It ranks #343 of 450 in-ear headphones by sound quality, rated 3.6/5, at $44.99; the Whizzer HE01 ranks #361, rated 3.4/5, and costs $45, so there is not much of a tradeoff to weigh.
What the KZ ZS10 Pro does well: One dynamic driver and four balanced armatures per side earn a preference score of 69 in crinacle’s measurement, good for the price. The catch: Across 20 hobbyist measurements on squig.link a 6.6 dB peak near 11.3 kHz can make cymbals sound sizzly, while a 4.3 dB dip at 6.3 kHz takes some bite off sibilants and snares.
The case for the Whizzer HE01: Bass, low mids and upper mids sit within about 1 dB of target, giving a warm, full-bodied sound that suits warm and bassy listeners. The tradeoff: Hobbyist measurements on squig.link show an 8 dB dip near 6.4 kHz and treble about 4 dB under target, which dulls cymbals and detail, and sub-bass falls about 3 dB short.
Buy the KZ ZS10 Pro. It is rated higher for sound quality than the Whizzer HE01 and costs less, so it is the default pick unless a specific strength of the other one matters more to you.
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Specifications Side By Side
| KZ ZS10 Pro | Whizzer HE01 | |
|---|---|---|
| Price | $44.99 | $45.00 |
| Ranked | #343 of 450 in In-Ear Headphones | #361 of 450 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Harman Preference Score | 69 (measured by crinacle, via AutoEQ) | 66 (measured by crinacle, via AutoEQ) |
| Deviation From Target | 2.44 dB standard deviation | 2.78 dB standard deviation |
| Tonal Tilt | -0.43 (negative is warmer, positive brighter) | -0.49 (negative is warmer, positive brighter) |
| Connection | Wired | Wired |
| Driver Type | Hybrid (1 dynamic + 4 balanced armature) | Dynamic |
| Drivers | 1 x dynamic + 4 x balanced armature | - |
| Impedance | 24 ohms | 18 ohms |
| Sensitivity | 111 dB | 112 dB/mW |
| Frequency Response | 7Hz - 40kHz (Manufacturer specified) | 15Hz - 40kHz (Manufacturer specified) |
| Back | Closed | Closed |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-0.2 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (-3.8 dB at 30 Hz) |
| Built-in Microphone | - | No |
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Prices on this page were last checked October 11, 2026 at 4:59 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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The Two Headphones In Full
KZ ZS10 Pro: $44.99 Amazon eBay
Pros: One dynamic driver and four balanced armatures per side earn a preference score of 69 in crinacle’s measurement, good for the price. Sub-bass is right on target down to 30 Hz with bass about 3 dB above, so electronic and hip-hop tracks get solid punch and rumble. At 24 ohms and 111 dB sensitivity it plays loud from a phone.
Cons: Across 20 hobbyist measurements on squig.link a 6.6 dB peak near 11.3 kHz can make cymbals sound sizzly, while a 4.3 dB dip at 6.3 kHz takes some bite off sibilants and snares. The CCA C12 and CCA C10 are both rated higher at a similar price.
Full KZ ZS10 Pro review and specifications →
| Back | Closed |
|---|---|
| Connection | Wired |
| Deviation From Target | 2.44 dB standard deviation |
| Driver Type | Hybrid (1 dynamic + 4 balanced armature) |
| Drivers | 1 x dynamic + 4 x balanced armature |
| Form Factor | In-ear |
| Frequency Response | 7Hz - 40kHz (Manufacturer specified) |
| Harman Preference Score | 69 (measured by crinacle, via AutoEQ) |
| Impedance | 24 ohms |
| Sensitivity | 111 dB |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-0.2 dB at 30 Hz) |
| Tonal Tilt | -0.43 (negative is warmer, positive brighter) |
EQ preset to match the Harman target
Set a preamp of -5.0 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by AutoEQ from its measured frequency response.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +1.1 dB | 0.70 |
| Peak | 164 Hz | -3.7 dB | 0.62 |
| Peak | 772 Hz | +3.3 dB | 1.02 |
| Peak | 2,169 Hz | -4.3 dB | 2.52 |
| Peak | 3,267 Hz | +3.7 dB | 2.93 |
| High shelf | 10,000 Hz | +0.9 dB | 0.70 |
| Peak | 6,415 Hz | +4.7 dB | 3.96 |
| Peak | 4,521 Hz | -3.6 dB | 6.00 |
| Peak | 8,356 Hz | +1.6 dB | 4.13 |
| Peak | 4,784 Hz | +0.6 dB | 5.93 |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Whizzer HE01: $45.00 Amazon eBay
Pros: Bass, low mids and upper mids sit within about 1 dB of target, giving a warm, full-bodied sound that suits warm and bassy listeners. A preference score of 66 is respectable for an inexpensive single dynamic driver. At 18 ohms and 112 dB/mW it plays loud from any phone.
Cons: Hobbyist measurements on squig.link show an 8 dB dip near 6.4 kHz and treble about 4 dB under target, which dulls cymbals and detail, and sub-bass falls about 3 dB short. The CCA C10 and KZ ZS10 Pro both carry higher ratings for slightly less money.
Full Whizzer HE01 review and specifications →
| Back | Closed |
|---|---|
| Built-in Microphone | No |
| Connection | Wired |
| Deviation From Target | 2.78 dB standard deviation |
| Driver Type | Dynamic |
| Form Factor | In-ear |
| Frequency Response | 15Hz - 40kHz (Manufacturer specified) |
| Harman Preference Score | 66 (measured by crinacle, via AutoEQ) |
| Impedance | 18 ohms |
| Sensitivity | 112 dB/mW |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-3.8 dB at 30 Hz) |
| Tonal Tilt | -0.49 (negative is warmer, positive brighter) |
EQ preset to match the Harman target
Set a preamp of -5.8 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by AutoEQ from its measured frequency response.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +1.4 dB | 0.70 |
| Peak | 5,768 Hz | +6.2 dB | 1.56 |
| Peak | 147 Hz | -4.0 dB | 0.85 |
| Peak | 4,048 Hz | -4.4 dB | 1.31 |
| Peak | 8,692 Hz | +3.8 dB | 1.09 |
| High shelf | 10,000 Hz | -3.5 dB | 0.70 |
| Peak | 855 Hz | +3.1 dB | 1.21 |
| Peak | 1,897 Hz | -1.5 dB | 1.05 |
| Peak | 277 Hz | -0.9 dB | 1.84 |
| Peak | 3,401 Hz | +1.1 dB | 3.63 |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons