Short answer: a tie on sound quality. Both are rated 3.6/5 (#699 and #721 of 1291 in-ear headphones) at nearly the same price ($129.95 vs $127.99), so choose on features and fit.
Why pick the Beats Fit Pro: 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 tradeoff: 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.
The case for the TRN Whale Shark: A warm, bassy hybrid in-ear with three dynamic drivers and a planar, bass 3.3 dB above target and upper mids almost on target. The tradeoff: A 6.3 dB dip near 6.1 kHz followed by a 6.5 dB peak near 8.1 kHz makes cymbals and sibilance uneven, and air above 10 kHz runs 4.6 dB hot for an extra sharp shimmer.
Buy the Beats Fit Pro or the TRN Whale Shark on features: they are rated the same for sound quality at close to the same price.
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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 eBay
A warm, bassy hybrid in-ear with three dynamic drivers and a planar, bass 3.3 dB above target and upper mids almost on target.
Amazon $127.99 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
| Beats Fit Pro | TRN Whale Shark | |
|---|---|---|
| Price | $129.95 | $127.99 |
| Ranked | #699 of 1291 in In-Ear Headphones | #721 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 69 (median of 1 squig.link measurements, calibrated to AutoEQ) | 69 (median of 8 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 2.20 dB standard deviation | 2.41 dB standard deviation |
| Tonal Tilt | +0.78 (negative is warmer, positive brighter) | -0.39 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-4.0 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (-0.9 dB at 30 Hz) |
| Connection | True wireless | Wired |
| 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 | - |
| Driver Type | - | Hybrid (3 dynamic + 1 planar magnetic) |
| Drivers | - | 3 x dynamic + 1 x planar magnetic |
| Impedance | - | 16 ohms |
| Sensitivity | - | 110 dB SPL/mW |
| Frequency Response | - | 10Hz - 40kHz (Manufacturer specified) |
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