Short answer: the Moondrop Rays. Both are rated 4.3/5 for sound quality (#135 and #152 of 450 in-ear headphones), and the Moondrop Rays costs $99.99 against $109 for the ZhuLinNiao Z4, so with nothing between them on sound quality, price settles it.
Buy the Moondrop Rays. Both are rated the same for sound quality, and it costs $9.01 less than the ZhuLinNiao Z4.
Want more options? Browse the full Headphones rankings.
Specifications Side By Side
| Moondrop Rays | ZhuLinNiao Z4 | |
|---|---|---|
| Price | $99.99 | $109.00 |
| Ranked | #135 of 450 in In-Ear Headphones | #152 of 450 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 78 (median of 4 squig.link measurements, calibrated to AutoEQ) | 77 (median of 10 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 1.53 dB standard deviation | 1.69 dB standard deviation |
| Tonal Tilt | -0.41 (negative is warmer, positive brighter) | +0.44 (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 (-3.7 dB at 30 Hz) |
| Connection | Wired | Wired |
| Driver Type | Hybrid (1 dynamic + 1 planar magnetic) | Dynamic |
| Drivers | 1 x 10mm dynamic + 1 x 6mm planar magnetic | - |
| Impedance | 30 ohms | 32 ohms |
| Sensitivity | 120 dB SPL/Vrms | 106 dB |
| Frequency Response | 7Hz - 39kHz (Manufacturer specified) | 10Hz - 40kHz (Manufacturer specified) |
| Built-in Microphone | Yes | - |
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More worthwhile head-to-heads for Moondrop Rays:
- Moondrop Kato vs Moondrop Rays
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- Moondrop Kato vs ZhuLinNiao Z4
- Fosi Audio IM4 vs ZhuLinNiao Z4
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
Moondrop Rays: $99.99 Amazon eBay
Full Moondrop Rays review and specifications →
| Released | Apr 2025 (1 year ago) |
|---|---|
| Back | Closed |
| Built-in Microphone | Yes |
| Connection | Wired |
| Deviation From Target | 1.53 dB standard deviation |
| Driver Type | Hybrid (1 dynamic + 1 planar magnetic) |
| Drivers | 1 x 10mm dynamic + 1 x 6mm planar magnetic |
| Form Factor | In-ear |
| Frequency Response | 7Hz - 39kHz (Manufacturer specified) |
| Harman Preference Score | 78 (median of 4 squig.link measurements, calibrated to AutoEQ) |
| Impedance | 30 ohms |
| Sensitivity | 120 dB SPL/Vrms |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-1.2 dB at 30 Hz) |
| Tonal Tilt | -0.41 (negative is warmer, positive brighter) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
ZhuLinNiao Z4: $109.00 Amazon eBay
Full ZhuLinNiao Z4 review and specifications →
| Back | Closed |
|---|---|
| Connection | Wired |
| Deviation From Target | 1.69 dB standard deviation |
| Driver Type | Dynamic |
| Form Factor | In-ear |
| Frequency Response | 10Hz - 40kHz (Manufacturer specified) |
| Harman Preference Score | 77 (median of 10 squig.link measurements, calibrated to AutoEQ) |
| Impedance | 32 ohms |
| Sensitivity | 106 dB |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-3.7 dB at 30 Hz) |
| Tonal Tilt | +0.44 (negative is warmer, positive brighter) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons