Short answer: a tie on sound quality. Both are rated 3.4/5 (#849 and #855 of 1291 in-ear headphones) at nearly the same price ($290.99 vs $289), so choose on features and fit.
The case for the DUNU x Gizaudio DaVinci: Bass sits close to target and holds down to 20 Hz, so low end sounds full without bloat. The catch: Presence sits about 4.7 dB low with an 8.1 dB dip near 6.1 kHz, so vocals and instruments lose some bite.
The case for the ISN Audio Neo 5: A broadly balanced tuning with a preference score of 67 against the Harman target. The tradeoff: Treble about 4 dB below target from 3 to 10 kHz, which can sound dull or veiled next to brighter headphones.
Buy the DUNU x Gizaudio DaVinci or the ISN Audio Neo 5 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.
Bass sits close to target and holds down to 20 Hz, so low end sounds full without bloat.
HiFiGo $290.99 eBay
A broadly balanced tuning with a preference score of 67 against the Harman target.
Penon Audio $289.00 eBayPrices on this page were last checked October 16, 2026 at 5:46 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 x Gizaudio DaVinci | ISN Audio Neo 5 | |
|---|---|---|
| Price | $290.99 | $289.00 |
| Ranked | #849 of 1291 in In-Ear Headphones | #855 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Connection | Wired | Wired |
| Driver Type | Hybrid | Hybrid |
| Drivers | 1 x 10mm dynamic + 1 x 8mm dynamic + 4 x balanced armature | 1 DD + 4 BA (1 x 10mm dynamic driver + 4 Knowles balanced armature) |
| Impedance | 35 ohms | 26 ohms |
| Sensitivity | 109 dB/mW | 110 dB |
| Frequency Response | 5Hz - 40kHz (Manufacturer specified) | 10Hz - 20kHz |
| Weight | 0 lbs (6.6 g) | - |
| Harman Preference Score | 67 (median of 33 squig.link measurements, calibrated to AutoEQ) | 67 (median of 5 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 2.24 dB standard deviation | 2.28 dB standard deviation |
| Tonal Tilt | -0.98 (negative is warmer, positive brighter) | -0.92 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+0.6 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (+0.1 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 x Gizaudio DaVinci from aden, atechreviews, audioamigo, awsmdanny, boizoff, bryaudioreviews, cammyfi, dl, doltonius, ducbloke, eliseaudio, freeryder05, gadgetrytech, hobbytalk, iemocean, jaytiss, kazi, koi, lestat, listener, obodio, precog, pw, silicagel, sl0the, soundcheck39, soundignity, superreview, suporsalad, theaudiostore, timmyv, tonedeafmonk, treblewellxtended and zerostresslevel; the ISN Audio Neo 5 from dl, iemocean, isaiahse, soundignity and tonedeafmonk, all via squig.link.
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