KZ ZST
EarFun Air Pro 4
What Buyers Say
KZ ZST
These budget in-ear headphones deliver exceptional sound quality with deep bass and clear highs, earning high praise from music lovers. However, users consistently report a constant background hiss when powered and a poor microphone, making them unsuitable for calls or gaming. The build quality and comfort are generally well-regarded, though some find the fit bulky.
Pros
- Exceptional sound quality
- Deep and punchy bass
- Clear highs and mids
- Solid build quality
- Comfortable fit
Cons
- Constant background hiss when powered
- Poor microphone quality
- Uncomfortable for small ears
- No carrying case included
- Cable pulls head when snagged
EarFun Air Pro 4
The EarFun Air Pro 4 earbuds deliver exceptional value, with users praising their high-end sound quality, effective noise cancellation, and robust battery life. Many reviewers note they outperform far more expensive competitors like AirPods Pro and Sony XM4s, especially after customizing the EQ via the app. A few minor issues include occasional fit adjustments and a quirk with single-bud Bluetooth connectivity, but overall sentiment is overwhelmingly positive.
Pros
- Excellent sound quality with LDAC and aptX Lossless
- Effective active noise cancellation
- Long battery life (11 hours per charge)
- Great value for money
- Comfortable and secure fit
Cons
- Single-bud Bluetooth connectivity quirk
- Occasional fit adjustments needed
- LDAC disables multipoint pairing
- Le Audio not working for some users
Scores
Specifications
| KZ ZST | EarFun Air Pro 4 | |
|---|---|---|
| Design | ||
| Form Factor | in-ear | in-ear |
| Wearing Style | — | true wireless |
| Ear Tips | S, M, L | 5 pairs of ear tips |
| Weight | 0.06 kg | 0.05 kg★ |
| Audio | ||
| Driver Type | hybrid | hybrid |
| Driver Size | 10 mm | 10 mm |
| Drivers | 2 | 2 |
| Freq Min | 20 Hz | 20 Hz |
| Freq Max | 20 kHz | 20 kHz |
| Impedance | 18 Ω | 32 Ω |
| Sensitivity | 106 dB★ | 100 dB |
| Hi-Res Audio | ✓ | ✓ |
| Codecs | KZ ZSN PRO in Ear Gaming Earphones, Hybrid Technology 1DD 1BA Drivers Wired Earbuds Comfortable Noise Cancelling Gaming Earbuds Headphones for Cell Phone Android Women Men Girl (Blue with Mic) | aptX Lossless, LDAC, LC3 |
| Noise Control | ||
| ANC | ✓ | ✓ |
| ANC Type | — | adaptive hybrid |
| Transparency | — | ✗ |
| Connectivity | ||
| Wireless | ✗ | ✓★ |
| Bluetooth | — | 6.0 |
| Profiles | — | A2DP, AVRCP, HFP |
| Multipoint | — | ✓★ |
| Wired Connector | — | Bluetooth |
| Earbud Battery | ||
| Battery Life | — | 11 hrs★ |
| Charge Time | — | 2 hrs★ |
| Fast Charging | — | 10 min for 2 hours playback |
| Charging | — | USB-C★ |
| Case Battery | ||
| Case Battery | — | 54 hrs★ |
| Case Charging | — | USB-C★ |
| Wireless Charging | — | ✓★ |
| Microphone | ||
| Microphone | ✓ | ✓ |
| Mic Count | — | 6★ |
| NC Mic | ✓ | ✓ |
| Features | ||
| Voice Assistant | — | Google Assistant |
| Touch Controls | ✓ | ✓ |
| App | — | EarFun Audio App |
| Gaming Mode | ✓ | ✓ |
| Bone Conduction | — | ✗ |
| Water Resistance | — | IP55 |
Pros & Cons
KZ ZST
- Strong social proof (96th percentile)96th %ile
- Strong sound (91st percentile)91st %ile
- Strong user sentiment (81st percentile)81st %ile
- Strong anc (73rd percentile)
- Below average build (34th percentile)
EarFun Air Pro 4
- Strong sound (99th percentile)99th %ile
- Strong connectivity (99th percentile)99th %ile
- Strong mic (98th percentile)98th %ile
- Strong user sentiment (97th percentile)97th %ile
Verdict
Scores 86 overall, wins 7 of 7 usage categories and 10 of 37 specs.