Short answer: the Artpical Blue Planet. Both are rated 3.5/5 for sound quality (#839 and #797 of 1291 in-ear headphones), and the Artpical Blue Planet costs $570 against $599 for the Tin HiFi P2 Ultra, with sound quality a draw, the lower price decides it.
The case for the Artpical Blue Planet: A 12mm planar IEM with treble right on the Harman target and full sub-bass to 20 Hz, scoring 67 across four measurements. The catch: A 2.45 dB spread from the target shows peaks and dips that better tuned sets avoid.
Why pick the Tin HiFi P2 Ultra: A 12mm planar IEM in a gold plated shell with bass right on the Harman target, scoring 68 across five measurements. Watch for: Treble sits about 4.7 dB below target, a dark, relaxed balance.
Buy the Artpical Blue Planet. Both are rated the same for sound quality, and it costs $29 less than the Tin HiFi P2 Ultra.
Still deciding? The full Headphones rankings cover every ranked option.
A 12mm planar IEM with treble right on the Harman target and full sub-bass to 20 Hz, scoring 67 across four measurements.
e-earphone (JP) eBay
A 12mm planar IEM in a gold plated shell with bass right on the Harman target, scoring 68 across five measurements.
Amazon $599.00 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
| Artpical Blue Planet | Tin HiFi P2 Ultra | |
|---|---|---|
| Price | $570 | $599.00 |
| Ranked | #839 of 1291 in In-Ear Headphones | #797 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Connection | Wired | Wired |
| Driver Type | Planar Magnetic | Planar Magnetic |
| Drivers | 1 x 12mm planar magnetic | 1 x 12mm planar |
| Impedance | 16 ohms | 32 ohms |
| Sensitivity | 98 dB/mW @ 1kHz | 98 dB |
| Harman Preference Score | 67 (median of 4 squig.link measurements, calibrated to AutoEQ) | 68 (median of 5 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 2.45 dB standard deviation | 2.47 dB standard deviation |
| Tonal Tilt | -0.47 (negative is warmer, positive brighter) | -0.51 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+1.3 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (-2.5 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 Artpical Blue Planet from aftersound, dchpgall, hu-fi and soundignity; the Tin HiFi P2 Ultra from atechreviews, audioamigo, csi-zone, ducbloke and soundignity, all via squig.link.
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