Short answer: the DUNU Vulkan 2. It ranks #643 of 1291 in-ear headphones by sound quality, rated 3.7/5, at $349; the Penon Dome ranks #744, rated 3.6/5, at $349. With prices this close, go by the sound-quality ranking rather than the cost.
The case for the DUNU Vulkan 2: The median of 15 hobbyist measurements gives it a solid Harman preference score of 70 with a 2.16 dB spread, and its mids sit within about 1.1 dB of target, so vocals and instruments sound natural. Watch for: Presence sits about 5.3 dB low with a 6.9 dB dip near 4.0 kHz, so vocals and instruments lose some bite.
The case for the Penon Dome: A broadly balanced tuning with a preference score of 69 against the Harman target. The catch: Treble about 6 dB below target from 3 to 10 kHz, which can sound dull or veiled next to brighter headphones.
Buy the DUNU Vulkan 2. It is rated higher for sound quality than the Penon Dome at the same price, so it is the default pick unless a specific strength of the other one matters more to you.
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The median of 15 hobbyist measurements gives it a solid Harman preference score of 70 with a 2.16 dB spread, and its mids sit within about 1.1 dB of target, so vocals and instruments sound natural.
Amazon $349.00 eBay
A broadly balanced tuning with a preference score of 69 against the Harman target.
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Specifications Side By Side
| DUNU Vulkan 2 | Penon Dome | |
|---|---|---|
| Price | $349.00 | $349 |
| Ranked | #643 of 1291 in In-Ear Headphones | #744 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Connection | Wired | Wired (3.5mm / 4.4mm) |
| Driver Type | Hybrid | Hybrid |
| Drivers | 1 x 10mm dynamic + 1 x 8mm dynamic + 6 x balanced armature | 1 Dynamic, 3 Balanced Armature |
| Impedance | 35 ohms | - |
| Sensitivity | 113 dB/mW | - |
| Frequency Response | 5Hz - 40kHz (Manufacturer specified) | - |
| Weight | 0 lbs (8 g) | - |
| Harman Preference Score | 70 (median of 15 squig.link measurements, calibrated to AutoEQ) | 69 (median of 5 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 2.16 dB standard deviation | 2.40 dB standard deviation |
| Tonal Tilt | +0.14 (negative is warmer, positive brighter) | -0.30 (negative is warmer, positive brighter) |
| 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 (-2.3 dB at 30 Hz) |
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 Vulkan 2 from atechreviews, audioamigo, dl, gadgetgenerations, hbb, hobbytalk, hu-fi, jaytiss, joycesreview, kr0mka, pw, soundignity, superreview, timmyv and treblewellxtended; the Penon Dome from flare, mmagtech, theaudiostore, tonedeafmonk and treblewellxtended, all via squig.link.
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