Short answer: the TRN Kirin. It ranks #661 of 1291 in-ear headphones by sound quality, rated 3.7/5, at $129.80; the Beats Fit Pro ranks #699, rated 3.6/5, and costs $129.95, which makes this an easy call rather than a real tradeoff.
The case for the TRN Kirin: A 14.5mm planar IEM with swappable tuning nozzles. The catch: Treble sits about 2.9 dB below target, a dark, relaxed balance.
What the Beats Fit Pro does well: In hobbyist measurements on squig.link the response tracks the Harman target evenly, with a 2.2 dB standard deviation and upper mids within 1 dB, so vocals sound clear and natural for neutral leaning listeners. The catch: Bass sits 3 to 5 dB below target from 20 to 200 Hz, so pop and hip hop sound lighter than on bass focused earbuds.
Buy the TRN Kirin. It is rated higher for sound quality than the Beats Fit Pro and costs less, so it is the default pick unless a specific strength of the other one matters more to you.
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A 14.5mm planar IEM with swappable tuning nozzles.
Shenzhenaudio $129.80 eBay
In hobbyist measurements on squig.link the response tracks the Harman target evenly, with a 2.2 dB standard deviation and upper mids within 1 dB, so vocals sound clear and natural for neutral leaning listeners.
Amazon $129.95 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
| TRN Kirin | Beats Fit Pro | |
|---|---|---|
| Price | $129.80 | $129.95 |
| Ranked | #661 of 1291 in In-Ear Headphones | #699 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Connection | Wired | True wireless |
| Driver Type | Planar Magnetic | - |
| Drivers | 1 x 14.5mm planar | - |
| Impedance | 32 ohms | - |
| Sensitivity | 106 dB | - |
| Harman Preference Score | 70 (median of 6 squig.link measurements, calibrated to AutoEQ) | 69 (median of 1 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 2.23 dB standard deviation | 2.20 dB standard deviation |
| Tonal Tilt | -0.45 (negative is warmer, positive brighter) | +0.78 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-1.2 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (-4.0 dB at 30 Hz) |
| Weight | - | 0 lbs (5.6 g) per earbud |
| Active Noise Cancelling | - | Yes |
| Battery Life | - | 6 hours (24 with case, ANC on, Manufacturer specified) |
| Bluetooth Version | - | 5.0 |
| Bluetooth Codecs | - | SBC, AAC |
| Built-in Microphone | - | Yes |
| IP Rating | - | IPX4 |
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