Short answer: the Tin HiFi P1 Max II. Both are rated 4.1/5 for sound quality (#350 and #325 of 1291 in-ear headphones), and the Tin HiFi P1 Max II costs $109 against $119 for the Ucotech RE-3 Pro, so with nothing between them on sound quality, price settles it.
Why pick the Tin HiFi P1 Max II: A planar IEM that measures well across fourteen measurements (score 75), with bass on target down to 20 Hz. The tradeoff: At 98 dB sensitivity it needs more power than most IEMs, so a dongle DAC helps, and treble sits about 3.1 dB below target.
What the Ucotech RE-3 Pro does well: The median of 3 hobbyist measurements gives it a very good Harman preference score of 75 with a 1.72 dB spread. The tradeoff: A 5.4 dB peak near 11.9 kHz can make cymbals and sibilance sound sharp.
Buy the Tin HiFi P1 Max II. Both are rated the same for sound quality, and it costs $10 less than the Ucotech RE-3 Pro.
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A planar IEM that measures well across fourteen measurements (score 75), with bass on target down to 20 Hz.
Amazon $109.00 eBay
The median of 3 hobbyist measurements gives it a very good Harman preference score of 75 with a 1.72 dB spread.
Bloom Audio $119.00 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
| Tin HiFi P1 Max II | Ucotech RE-3 Pro | |
|---|---|---|
| Price | $109.00 | $119.00 |
| Ranked | #350 of 1291 in In-Ear Headphones | #325 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Connection | Wired | Wired |
| Driver Type | Planar magnetic | Dynamic |
| Drivers | 1 x 14.2mm planar | 1 x 10mm dynamic |
| Impedance | 16 ohms | 30 ohms |
| Sensitivity | 98 dB at 1 kHz | 105 dB/mW |
| Harman Preference Score | 75 (median of 14 squig.link measurements, calibrated to AutoEQ) | 75 (median of 3 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 1.92 dB standard deviation | 1.72 dB standard deviation |
| Tonal Tilt | -0.28 (negative is warmer, positive brighter) | -0.53 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-1.5 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (+0.8 dB at 30 Hz) |
| Frequency Response | - | 20Hz - 20kHz (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 Tin HiFi P1 Max II from arn, audioamigo, csi-zone, dl, hobbytalk, hu-fi, jaytiss, kuping-sensi, mmagtech, pw, samreviews, soundcheck39, soundignity and vortexreviews; the Ucotech RE-3 Pro from eliseaudio, elrics and superreview, all via squig.link.
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