Short answer: the DUNU Zen Pro. It ranks #873 of 1369 in-ear headphones by sound quality, rated 3.4/5, at $899.99; the Forte Ears Mefisto ranks #965, rated 3.3/5, and costs $2,899, so there is little reason to consider the other one.
Why pick the DUNU Zen Pro: A single dynamic driver with bass, low mids and upper mids all within half a dB of target in squig.link’s hobbyist measurements, so voices and instruments keep a natural, even body. The catch: An 8.3 dB dip near 6.4 kHz and a 4 dB shortfall across 3 to 10 kHz dull cymbals and blunt the edge of vocals, while a 4.6 dB peak near 11.5 kHz adds a little uneven sparkle.
The case for the Forte Ears Mefisto: A published AutoEQ preset corrects its response toward the Harman target, so a few minutes of EQ setup closes most of the gap. Watch for: Treble about 3 dB below target from 3 to 10 kHz, which can sound dull or veiled next to brighter headphones.
Buy the DUNU Zen Pro. It is rated higher for sound quality than the Forte Ears Mefisto and costs less, so only choose the other one for a particular feature it does better.
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A single dynamic driver with bass, low mids and upper mids all within half a dB of target in squig.link’s hobbyist measurements, so voices and instruments keep a natural, even body.
HiFiGo $899.99 eBay
A published AutoEQ preset corrects its response toward the Harman target, so a few minutes of EQ setup closes most of the gap.
Forte Ears $2,899.00 eBayPrices on this page were last checked October 17, 2026 at 6:04 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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Specifications Side By Side
| DUNU Zen Pro | Forte Ears Mefisto | |
|---|---|---|
| Price | $899.99 | $2,899.00 |
| Ranked | #873 of 1369 in In-Ear Headphones | #965 of 1369 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 66 (measured by crinacle, via AutoEQ) | 65 (median of 5 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 3.11 dB standard deviation | 2.45 dB standard deviation |
| Tonal Tilt | -0.11 (negative is warmer, positive brighter) | -0.63 (negative is warmer, positive brighter) |
| Connection | Wired | Wired |
| Driver Type | Dynamic | Tribrid |
| Impedance | 16 ohms | 5.6 ohms |
| Sensitivity | 112 dB | 105 dB |
| Frequency Response | 5Hz - 40kHz (Manufacturer specified) | 12Hz - 35kHz |
| Built-in Microphone | No | - |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-3.7 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (+1.8 dB at 30 Hz) |
| Drivers | - | 7 drivers (dual 7.8mm LCP dynamic drivers + 4 balanced armatures + 1 Aria planar tweeter) |
Frequency Response Compared
Both headphones’ measurements overlaid on the Harman target. Above the target sounds louder in that range, below it quieter. Each curve is the median of several independent measurements, shifted so its 500 Hz to 2 kHz average sits at 0 dB, so only the tuning is compared.
Measurement data: the DUNU Zen Pro from aden, aftersound, ankramutt, bukanaudiophile, ekaudio, joshtbvo, kazi, koi, musicafe, nymz, precog, superreview, tedthepraimortis, tgx78 and vsg; the Forte Ears Mefisto from aden, dchpgall, eliseaudio, sl0the and zerostresslevel, all via squig.link.
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