Short answer: the ISN Audio EBC80. It ranks #251 of 450 in-ear headphones by sound quality, rated 4.0/5, at $699; the DUNU Zen ranks #303, rated 3.9/5, and costs $699.99, so there is little reason to consider the other one.
Why pick the DUNU Zen: Crinacle’s measurement earns it a preference score of 72, and squig.link measurements show a warm, slightly bass-lifted tuning with bass about 1.6 dB above target that suits warm and bassy tastes. The tradeoff: Air above 10 kHz falls about 8 dB short of target, with an 11 dB hole near 11.9 kHz, so the top end sounds rolled off and lacks shimmer.
Buy the ISN Audio EBC80. It is rated higher for sound quality than the DUNU Zen and costs less, so it is the default pick unless a specific strength of the other one matters more to you.
Looking for alternatives? See the complete Headphones rankings.
Specifications Side By Side
| ISN Audio EBC80 | DUNU Zen | |
|---|---|---|
| Price | $699.00 | $699.99 |
| Ranked | #251 of 450 in In-Ear Headphones | #303 of 450 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 74 (median of 5 squig.link measurements, calibrated to AutoEQ) | 72 (measured by crinacle, via AutoEQ) |
| Deviation From Target | 1.91 dB standard deviation | 2.48 dB standard deviation |
| Tonal Tilt | -0.33 (negative is warmer, positive brighter) | +0.21 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-1.6 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (-1.6 dB at 30 Hz) |
| Connection | Wired | Wired |
| Driver Type | Hybrid (2 dynamic + 2 balanced armature + 2 electrostatic + 2 bone conduction) | Dynamic |
| Drivers | 2 x dynamic + 2 x balanced armature + 2 x electrostatic + 2 x bone conduction | 1 x dynamic |
| Impedance | 13 ohms | 16 ohms |
| Sensitivity | 106 dB | 112 dB |
| Built-in Microphone | No | No |
| Frequency Response | - | 5Hz - 40kHz (Manufacturer specified) |
Related Headphone Comparisons
More top alternatives to ISN Audio EBC80:
- SoftEars RSV vs ISN Audio EBC80
- Shanling Regal vs ISN Audio EBC80
- Fearless Audio S8Z vs ISN Audio EBC80
- SoftEars RSV vs DUNU Zen
- Fearless Audio S8Z vs DUNU Zen
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.
As an eBay Partner, we may be compensated if you make a purchase.
The Two Headphones In Full
ISN Audio EBC80: $699.00 Amazon eBay
Full ISN Audio EBC80 review and specifications →
| Back | Closed |
|---|---|
| Built-in Microphone | No |
| Connection | Wired |
| Deviation From Target | 1.91 dB standard deviation |
| Driver Type | Hybrid (2 dynamic + 2 balanced armature + 2 electrostatic + 2 bone conduction) |
| Drivers | 2 x dynamic + 2 x balanced armature + 2 x electrostatic + 2 x bone conduction |
| Form Factor | In-ear |
| Harman Preference Score | 74 (median of 5 squig.link measurements, calibrated to AutoEQ) |
| Impedance | 13 ohms |
| Sensitivity | 106 dB |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-1.6 dB at 30 Hz) |
| Tonal Tilt | -0.33 (negative is warmer, positive brighter) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
DUNU Zen: $699.99 Shenzhenaudio eBay
Pros: Crinacle’s measurement earns it a preference score of 72, and squig.link measurements show a warm, slightly bass-lifted tuning with bass about 1.6 dB above target that suits warm and bassy tastes. A single dynamic driver at 16 ohms and 112 dB sensitivity plays loudly from a phone. It matches the rating of the Unique Melody MEXT while costing less.
Cons: Air above 10 kHz falls about 8 dB short of target, with an 11 dB hole near 11.9 kHz, so the top end sounds rolled off and lacks shimmer. A 6 dB peak near 8.1 kHz sits right before that drop and can make some cymbal hits and sibilants stand out. The Fearless Audio S8Z is rated higher for less money.
Full DUNU Zen review and specifications →
| Released | Dec 2020 (5 years ago) |
|---|---|
| Back | Closed |
| Built-in Microphone | No |
| Connection | Wired |
| Deviation From Target | 2.48 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 1 x dynamic |
| Form Factor | In-ear |
| Frequency Response | 5Hz - 40kHz (Manufacturer specified) |
| Harman Preference Score | 72 (measured by crinacle, via AutoEQ) |
| Impedance | 16 ohms |
| Sensitivity | 112 dB |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-1.6 dB at 30 Hz) |
| Tonal Tilt | +0.21 (negative is warmer, positive brighter) |
EQ preset to match the Harman target
Set a preamp of -6.6 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 | +10.4 dB | 0.70 |
| Peak | 1,937 Hz | -5.1 dB | 0.78 |
| Peak | 44 Hz | -8.2 dB | 0.33 |
| Peak | 900 Hz | +3.5 dB | 0.58 |
| Peak | 6,107 Hz | +6.5 dB | 1.54 |
| High shelf | 10,000 Hz | +6.5 dB | 0.70 |
| Peak | 7,456 Hz | -2.8 dB | 4.76 |
| Peak | 4,201 Hz | -1.7 dB | 4.97 |
| Peak | 3,114 Hz | +1.5 dB | 3.87 |
| Peak | 2,317 Hz | -0.9 dB | 4.50 |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons