Short answer: the HiBy Project Ace. It ranks #397 of 1291 in-ear headphones by sound quality, rated 4.0/5, at $219; the Fearless Audio Shangri-la ranks #471, rated 3.9/5, and costs $228, so there is not much of a tradeoff to weigh.
The case for the HiBy Project Ace: The median of 4 hobbyist measurements gives it a solid Harman preference score of 74 with a 2.07 dB spread. The tradeoff: Presence sits about 3.1 dB low with a 6.2 dB dip near 3.4 kHz, so vocals and instruments lose some bite.
The case for the Fearless Audio Shangri-la: Its four balanced armatures and 10mm dynamic driver produce bass that stays flat to target down to 20 Hz, with a 1.6 dB lift through the upper bass and low mids that suits warm and bass-leaning tastes. Watch for: Across hobbyist measurements a 5.4 dB dip near 3.2 kHz pulls vocals and lead instruments back slightly, which can make them sound less forward and articulate.
Buy the HiBy Project Ace. It is rated higher for sound quality than the Fearless Audio Shangri-la and costs less, so only choose the other one for a particular feature it does better.
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The median of 4 hobbyist measurements gives it a solid Harman preference score of 74 with a 2.07 dB spread.
Amazon $219.00 eBay
Its four balanced armatures and 10mm dynamic driver produce bass that stays flat to target down to 20 Hz, with a 1.6 dB lift through the upper bass and low mids that suits warm and bass-leaning tastes.
Linsoul $228.00 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
| HiBy Project Ace | Fearless Audio Shangri-la | |
|---|---|---|
| Price | $219.00 | $228.00 |
| Ranked | #397 of 1291 in In-Ear Headphones | #471 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 74 (median of 4 squig.link measurements, calibrated to AutoEQ) | 73 (measured by crinacle, via AutoEQ) |
| Deviation From Target | 2.07 dB standard deviation | 2.22 dB standard deviation |
| Tonal Tilt | +0.15 (negative is warmer, positive brighter) | -0.37 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-3.5 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (-1.0 dB at 30 Hz) |
| Connection | Wired | Wired |
| Driver Type | Dynamic | Hybrid (1 dynamic + 4 balanced armature) |
| Drivers | 1 x 12mm dynamic | 1 x 10mm dynamic + 4 x balanced armature |
| Impedance | 32 ohms | 22 ohms |
| Sensitivity | 115 dB | 112 dB @ 1kHz |
| Frequency Response | 20Hz - 20kHz (Manufacturer specified) | 15Hz - 20kHz (Manufacturer specified) |
| Weight | 0 lbs (8.3 g) | - |
| Built-in Microphone | - | No |
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