Short answer: a tie on sound quality. Both are rated 3.9/5 (#278 and #276 of 450 in-ear headphones), so choose on features and fit.
The case for the DUNU Titan S: Crinacle’s measurement gives it a preference score of 73, and across 34 hobbyist measurements on squig.link the bass, low mids and upper mids all land within half a decibel of the Harman target. Watch for: Hobbyist measurements put sub-bass about 3.2 dB below target, so the deepest synth and cinematic bass hits carry less rumble than the Harman curve calls for.
What the KZ ZSN Pro does well: A preference score of 73 in HypetheSonics’ measurement is solid for a wired set this cheap, with a response that stays within about 2.2 dB of the Harman target. The catch: Treble above 10 kHz runs about 6 dB hot, with a sharp 9.4 dB peak near 11 kHz that can make cymbals and hi-hats sound glassy or hissy.
Buy the DUNU Titan S or the KZ ZSN Pro on features: they are rated the same for sound quality at close to the same price.
Still deciding? The full Headphones rankings cover every ranked option.
Specifications Side By Side
| DUNU Titan S | KZ ZSN Pro | |
|---|---|---|
| Price | - | $24.99 |
| Ranked | #278 of 450 in In-Ear Headphones | #276 of 450 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 73 (measured by crinacle, via AutoEQ) | 73 (measured by HypetheSonics, via AutoEQ) |
| Deviation From Target | 2.29 dB standard deviation | 2.23 dB standard deviation |
| Tonal Tilt | +0.29 (negative is warmer, positive brighter) | -0.11 (negative is warmer, positive brighter) |
| Connection | Wired | Wired |
| Driver Type | Dynamic | Hybrid (1 dynamic + 1 balanced armature) |
| Drivers | 1 x 11mm dynamic | 1 x 10mm dynamic + 1 x balanced armature |
| Impedance | 32 ohms | 25 ohms |
| Sensitivity | 110 dB | 104 dB/mW |
| Frequency Response | 5Hz - 40kHz (Manufacturer specified) | 20Hz - 40kHz (Manufacturer specified) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-3.4 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (+0.1 dB at 30 Hz) |
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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
DUNU Titan S AliExpress eBay
Pros: Crinacle’s measurement gives it a preference score of 73, and across 34 hobbyist measurements on squig.link the bass, low mids and upper mids all land within half a decibel of the Harman target. That keeps vocals, piano and guitars sounding natural rather than pushed forward or recessed. With a 32 ohm load and a 110 dB sensitivity rating, it plays at comfortable volume straight from a phone.
Cons: Hobbyist measurements put sub-bass about 3.2 dB below target, so the deepest synth and cinematic bass hits carry less rumble than the Harman curve calls for. A 4.9 dB dip near 6.1 kHz followed by a 4.1 dB peak near 11.9 kHz gives the treble an uneven texture, softening some detail while adding a touch of glare up top.
Full DUNU Titan S review and specifications →
| Released | Dec 2021 (4 years ago) |
|---|---|
| Back | Closed |
| Connection | Wired |
| Deviation From Target | 2.29 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 1 x 11mm dynamic |
| Form Factor | In-ear |
| Frequency Response | 5Hz - 40kHz (Manufacturer specified) |
| Harman Preference Score | 73 (measured by crinacle, via AutoEQ) |
| Impedance | 32 ohms |
| Sensitivity | 110 dB |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-3.4 dB at 30 Hz) |
| Tonal Tilt | +0.29 (negative is warmer, positive brighter) |
EQ preset to match the Harman target
Set a preamp of -5.2 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 | +10.1 dB | 0.70 |
| Peak | 5,993 Hz | +13.5 dB | 0.87 |
| Peak | 4,479 Hz | -9.3 dB | 0.51 |
| Peak | 40 Hz | -7.2 dB | 0.34 |
| Peak | 762 Hz | +2.2 dB | 1.04 |
| High shelf | 10,000 Hz | -5.4 dB | 0.70 |
| Peak | 9,592 Hz | +2.8 dB | 2.45 |
| Peak | 1,411 Hz | -0.8 dB | 2.84 |
| Peak | 2,335 Hz | +0.3 dB | 1.89 |
| Peak | 1,030 Hz | +0.5 dB | 3.30 |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
KZ ZSN Pro: $24.99 Amazon eBay
Pros: A preference score of 73 in HypetheSonics’ measurement is solid for a wired set this cheap, with a response that stays within about 2.2 dB of the Harman target. Bass sits roughly 3 dB above target from 60 to 200 Hz, adding punch to kick drums and bass guitar without muddying the lower midrange, which stays within 1 dB. At 25 ohms and 104 dB/mW it runs loudly from a phone, and the hybrid dynamic plus balanced armature design suits v-shaped and warm tastes. It also rates higher than the MEE Audio M6 Pro.
Cons: Treble above 10 kHz runs about 6 dB hot, with a sharp 9.4 dB peak near 11 kHz that can make cymbals and hi-hats sound glassy or hissy. A 3.7 dB dip near 3.4 kHz pulls vocals and snare snap slightly back. Listeners who want a flat, neutral tuning will find the bass and treble both exaggerated.
Full KZ ZSN Pro review and specifications →
| Released | 2019 (7 years ago) |
|---|---|
| Back | Closed |
| Connection | Wired |
| Deviation From Target | 2.23 dB standard deviation |
| Driver Type | Hybrid (1 dynamic + 1 balanced armature) |
| Drivers | 1 x 10mm dynamic + 1 x balanced armature |
| Form Factor | In-ear |
| Frequency Response | 20Hz - 40kHz (Manufacturer specified) |
| Harman Preference Score | 73 (measured by HypetheSonics, via AutoEQ) |
| Impedance | 25 ohms |
| Sensitivity | 104 dB/mW |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+0.1 dB at 30 Hz) |
| Tonal Tilt | -0.11 (negative is warmer, positive brighter) |
EQ preset to match the Harman target
Set a preamp of -4.2 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 | +0.5 dB | 0.70 |
| Peak | 750 Hz | +3.7 dB | 0.88 |
| Peak | 160 Hz | -3.1 dB | 0.79 |
| Peak | 3,264 Hz | +4.4 dB | 3.80 |
| Peak | 2,073 Hz | -3.5 dB | 2.04 |
| High shelf | 10,000 Hz | -5.0 dB | 0.70 |
| Peak | 4,840 Hz | -4.2 dB | 6.00 |
| Peak | 6,161 Hz | +3.4 dB | 4.50 |
| Peak | 3,841 Hz | +1.8 dB | 5.81 |
| Peak | 4,626 Hz | -1.0 dB | 5.62 |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons