Short answer: a tie on sound quality. Both are rated 4.2/5 (#207 and #192 of 450 in-ear headphones) at nearly the same price ($396 vs $399), so choose on features and fit.
Buy the HeartField CU8 or the ThieAudio Hype 4 on features: they are rated the same for sound quality at close to the same price.
Still deciding? The full Headphones rankings cover every ranked option.
Specifications Side By Side
| HeartField CU8 | ThieAudio Hype 4 | |
|---|---|---|
| Price | $396.00 | $399.00 |
| Ranked | #207 of 450 in In-Ear Headphones | #192 of 450 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 76 (median of 5 squig.link measurements, calibrated to AutoEQ) | 76 (median of 31 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 1.53 dB standard deviation | 1.52 dB standard deviation |
| Tonal Tilt | -0.72 (negative is warmer, positive brighter) | -0.64 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+2.9 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (-0.1 dB at 30 Hz) |
| Connection | Wired | Wired |
| Driver Type | Balanced armature | Hybrid (2 dynamic + 4 balanced armature) |
| Drivers | 4 x balanced armature | 2 x dynamic + 4 x balanced armature |
| Impedance | 17 ohms | 17 ohms |
| Sensitivity | 108 dB | 105 dB |
| Frequency Response | 10Hz - 20kHz (Manufacturer specified) | 10Hz - 22kHz (Manufacturer specified) |
Related Headphone Comparisons
How ThieAudio Hype 4 compares with other leading options:
- ThieAudio Hype 2 vs ThieAudio Hype 4
- ThieAudio Hype 4 vs Yanyin Canon II
- ThieAudio Hype 4 vs Xenns Mangird Tea Pro SE
- ThieAudio Hype 4 vs 7Hz Aurora
- ThieAudio Hype 4 vs ThieAudio Hype 4 MKII
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
HeartField CU8: $396.00 Linsoul eBay
Full HeartField CU8 review and specifications →
| Released | Jun 2025 (1 year ago) |
|---|---|
| Back | Closed |
| Connection | Wired |
| Deviation From Target | 1.53 dB standard deviation |
| Driver Type | Balanced armature |
| Drivers | 4 x balanced armature |
| Form Factor | In-ear |
| Frequency Response | 10Hz - 20kHz (Manufacturer specified) |
| Harman Preference Score | 76 (median of 5 squig.link measurements, calibrated to AutoEQ) |
| Impedance | 17 ohms |
| Sensitivity | 108 dB |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+2.9 dB at 30 Hz) |
| Tonal Tilt | -0.72 (negative is warmer, positive brighter) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
ThieAudio Hype 4: $399.00 Amazon eBay
Full ThieAudio Hype 4 review and specifications →
| Back | Closed |
|---|---|
| Connection | Wired |
| Deviation From Target | 1.52 dB standard deviation |
| Driver Type | Hybrid (2 dynamic + 4 balanced armature) |
| Drivers | 2 x dynamic + 4 x balanced armature |
| Form Factor | In-ear |
| Frequency Response | 10Hz - 22kHz (Manufacturer specified) |
| Harman Preference Score | 76 (median of 31 squig.link measurements, calibrated to AutoEQ) |
| Impedance | 17 ohms |
| Sensitivity | 105 dB |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-0.1 dB at 30 Hz) |
| Tonal Tilt | -0.64 (negative is warmer, positive brighter) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons