Koss Utility 21299195352
Technics EAH-AZ100
What Buyers Say
Koss Utility 21299195352
The Koss KEB90 earphones deliver clear highs and punchy bass when paired with a DAC, but many users find the stock sound too bright and lacking bass without one. Build quality is a mixed bag—some appreciate the detachable cables and included tips, while others note flimsy wires and uncomfortable foam tips. Overall, they are a good value for the sale price, especially for those willing to use DSP correction or aftermarket ear tips.
Pros
- Clear highs with DAC
- Punchy bass with DAC
- Detachable cable design
- Comfortable silicone tips
- Good value on sale
Cons
- Bright sound without DAC
- Lack of bass without DAC
- Flimsy cable quality
- Uncomfortable foam tips
- Crinkling sound when inserting
Technics EAH-AZ100
The Technics EAH-AZ100 earbuds are overwhelmingly praised for their exceptional sound quality, with users highlighting deep bass, clear highs, and immersive audio. Comfort, battery life, and noise cancellation are also frequently commended, though some users note the price is high and volume could be louder. A few minor issues like Bluetooth LE disconnects and initial multi-device pairing were mentioned, but overall sentiment is very positive.
Pros
- Exceptional sound quality
- Deep immersive bass
- Effective noise cancellation
- Comfortable fit
- Excellent battery life
Cons
- High price point
- Limited maximum volume
- Bluetooth LE disconnects
- Initial multi-device pairing issues
- Plastic exterior
Scores
Specifications
| Koss Utility 21299195352 | Technics EAH-AZ100 | |
|---|---|---|
| Design | ||
| Form Factor | in-ear | in-ear |
| Wearing Style | — | true wireless |
| Ear Tips | S, M & L Silicone Cushions and S & M Foam Cushions | 5 x Eartip Pairs |
| Weight | 0.22 kg | 0.05 kg★ |
| Audio | ||
| Driver Type | dynamic | dynamic |
| Driver Size | 16 mm★ | 10 mm |
| Drivers | 1 | 1 |
| Freq Min | 10 Hz★ | 20 Hz |
| Freq Max | 25 kHz | 40 kHz★ |
| Impedance | 16 Ω | 16 Ω |
| Sensitivity | 98 dB★ | — |
| Hi-Res Audio | ✓ | ✓ |
| Codecs | Koss KEB90 Utility Earbud, Detachable Interchangeable Cord System, Noise Isolation Design, Stealth Grey | AAC, LC3, LDAC, SBC |
| Surround | — | Dolby Atmos |
| Noise Control | ||
| ANC | ✗ | ✓★ |
| ANC Type | — | adaptive |
| Transparency | ✗ | ✓★ |
| Connectivity | ||
| Wireless | — | ✓★ |
| Bluetooth | — | 5.3★ |
| Profiles | — | AVRCP, A2DP, HSP, HFP, TMAP, PBP |
| Multipoint | — | ✓★ |
| Wired Connector | — | Bluetooth |
| Range | — | 10 m★ |
| Earbud Battery | ||
| Battery Life | — | 8 hrs★ |
| Charge Time | — | 2.5 hrs★ |
| Fast Charging | — | 15 min. for 90 min. playback |
| Charging | USB-C | USB-C |
| Case Battery | ||
| Case Battery | — | 28 hrs★ |
| Case Charging | USB-C | USB-C |
| Wireless Charging | — | ✓★ |
| Microphone | ||
| Microphone | ✓ | ✓ |
| Mic Count | — | 6★ |
| NC Mic | ✗ | ✓★ |
| Features | ||
| Voice Assistant | — | Google Assistant, Siri |
| Touch Controls | ✗ | ✓★ |
| App | — | Android & iOS |
| Volume Limiting | — | ✗ |
| Gaming Mode | — | ✗ |
| Bone Conduction | — | ✗ |
| Water Resistance | — | IPX4 |
Pros & Cons
Koss Utility 21299195352
- Strong sound (83rd percentile)83rd %ile
- Below average connectivity (12th percentile)12th %ile
- Below average user sentiment (17th percentile)17th %ile
- Below average comfort (29th percentile)
- Below average social proof (31st percentile)
Technics EAH-AZ100
- Strong connectivity (100th percentile)100th %ile
- Strong sound (99th percentile)99th %ile
- Strong mic (98th percentile)98th %ile
- Strong anc (97th percentile)97th %ile
Verdict
Scores 100 overall, wins 7 of 7 usage categories and 15 of 40 specs.