Short answer: the Edifier Stax Spirit S10. Both are rated 4.0/5 for sound quality (#256 and #253 of 450 in-ear headphones), and the Edifier Stax Spirit S10 costs $199.99 against $219 for the HiBy Project Ace, with sound quality a draw, the lower price decides it.
Buy the Edifier Stax Spirit S10. Both are rated the same for sound quality, and it costs $19.01 less than the HiBy Project Ace.
Looking for alternatives? See the complete Headphones rankings.
Specifications Side By Side
| Edifier Stax Spirit S10 | HiBy Project Ace | |
|---|---|---|
| Price | $199.99 | $219.00 |
| Ranked | #256 of 450 in In-Ear Headphones | #253 of 450 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 74 (median of 3 squig.link measurements, calibrated to AutoEQ) | 74 (median of 4 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 2.19 dB standard deviation | 2.07 dB standard deviation |
| Tonal Tilt | -0.06 (negative is warmer, positive brighter) | +0.15 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-3.1 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (-3.5 dB at 30 Hz) |
| Connection | True wireless | Wired |
| Driver Type | Planar magnetic | Dynamic |
| Drivers | 1 x 12mm planar magnetic | 1 x 12mm dynamic |
| Active Noise Cancelling | Yes | - |
| Battery Life | Up to 28 hours with case (Manufacturer specified) | - |
| Bluetooth Version | 5.4 | - |
| Bluetooth Codecs | SBC, AAC, aptX, aptX Adaptive, aptX Lossless, LDAC, LHDC 5.0 | - |
| Built-in Microphone | Yes | - |
| IP Rating | IP54 | - |
| Impedance | - | 32 ohms |
| Sensitivity | - | 115 dB |
| Frequency Response | - | 20Hz - 20kHz (Manufacturer specified) |
| Weight | - | 0 lbs (8.3 g) |
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- Edifier Stax Spirit S10 vs Tanchjim Fola
- IKKO OH10S vs Edifier Stax Spirit S10
Prices on this page were last checked October 11, 2026 at 4:59 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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The Two Headphones In Full
Edifier Stax Spirit S10: $199.99 TWS Amazon eBay
Full Edifier Stax Spirit S10 review and specifications →
| Released | Sep 2024 (2 years ago) |
|---|---|
| Active Noise Cancelling | Yes |
| Back | Closed |
| Battery Life | Up to 28 hours with case (Manufacturer specified) |
| Bluetooth Codecs | SBC, AAC, aptX, aptX Adaptive, aptX Lossless, LDAC, LHDC 5.0 |
| Bluetooth Version | 5.4 |
| Built-in Microphone | Yes |
| Connection | True wireless |
| Deviation From Target | 2.19 dB standard deviation |
| Driver Type | Planar magnetic |
| Drivers | 1 x 12mm planar magnetic |
| Form Factor | In-ear |
| Harman Preference Score | 74 (median of 3 squig.link measurements, calibrated to AutoEQ) |
| IP Rating | IP54 |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-3.1 dB at 30 Hz) |
| Tonal Tilt | -0.06 (negative is warmer, positive brighter) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
HiBy Project Ace: $219.00 Amazon eBay
Full HiBy Project Ace review and specifications →
| Released | 2024 (2 years ago) |
|---|---|
| Back | Closed |
| Connection | Wired |
| Deviation From Target | 2.07 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 1 x 12mm dynamic |
| Form Factor | In-ear |
| Frequency Response | 20Hz - 20kHz (Manufacturer specified) |
| Harman Preference Score | 74 (median of 4 squig.link measurements, calibrated to AutoEQ) |
| Impedance | 32 ohms |
| Sensitivity | 115 dB |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-3.5 dB at 30 Hz) |
| Tonal Tilt | +0.15 (negative is warmer, positive brighter) |
| Weight | 0 lbs (8.3 g) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons