Short answer: a tie on sound quality. Both are rated 4.0/5 (#459 and #383 of 1291 in-ear headphones) at nearly the same price ($379 vs $379), so choose on features and fit.
The case for the Plunge Audio Unity Dynamic: A broadly balanced tuning with a preference score of 73 against the Harman target. Watch for: An uneven response, 2.2 dB standard deviation from target.
What the Yanyin Canon II does well: Its one dynamic plus four balanced armature hybrid measures a preference score of 73.9 in hobbyist squig.link measurements, with a modest 1.88 dB deviation from target. The catch: The presence region from 3 to 6 kHz averages 4.2 dB below target with a 5.4 dB dip near 3.4 kHz, which pushes vocals and guitars slightly back and softens the attack of snare hits.
Buy the Plunge Audio Unity Dynamic or the Yanyin Canon II 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.
A broadly balanced tuning with a preference score of 73 against the Harman target.
Plunge Audio $379 eBay
Its one dynamic plus four balanced armature hybrid measures a preference score of 73.9 in hobbyist squig.link measurements, with a modest 1.88 dB deviation from target.
Linsoul $379.00 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.
As an eBay Partner, we may be compensated if you make a purchase.
Specifications Side By Side
| Plunge Audio Unity Dynamic | Yanyin Canon II | |
|---|---|---|
| Price | $379 | $379.00 |
| Ranked | #459 of 1291 in In-Ear Headphones | #383 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 73 (median of 4 squig.link measurements, calibrated to AutoEQ) | 74 (median of 13 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 2.15 dB standard deviation | 1.88 dB standard deviation |
| Tonal Tilt | +0.09 (negative is warmer, positive brighter) | -0.53 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-1.7 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (-0.9 dB at 30 Hz) |
| Connection | Wired | Wired |
| Driver Type | Dynamic | Hybrid (1 dynamic + 4 balanced armature) |
| Drivers | 1 x 10mm dynamic | 1 x dynamic + 4 x balanced armature |
| Sensitivity | - | 112 dB |
| Frequency Response | - | 5Hz - 25kHz (Manufacturer specified) |
| Built-in Microphone | - | No |
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 Plunge Audio Unity Dynamic from aden, audioamigo, pw and tonedeafmonk; the Yanyin Canon II from animagus, arn, eliseaudio, flare, gadgetrytech, hbb, ianfann, iemocean, joycesreview, musicafe, obodio, practiphile, soundcheck39, superreview, tonedeafmonk and yanyin, all via squig.link.
Related Headphone Comparisons
More top alternatives to Yanyin Canon II: