Technics EAH-AZ100-K
Koss Utility 21299195352
What Buyers Say
Technics EAH-AZ100-K
The Technics AZ100 earbuds receive overwhelmingly positive feedback for their exceptional sound quality, comfort, and effective noise cancellation. Users praise the balanced bass, sparkling highs, and impressive soundstage, though some wish for higher volume and a lower price. Battery life is solid, and the earbuds are comfortable for extended wear, making them a top choice for audiophiles.
Pros
- Exceptional sound quality
- Effective noise cancellation
- Comfortable fit
- Solid battery life
- Balanced bass and treble
Cons
- Could be louder
- High price point
- Limited availability at Best Buy
- No volume control via tapping
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
Scores
Specifications
| Technics EAH-AZ100-K | Koss Utility 21299195352 | |
|---|---|---|
| Design | ||
| Form Factor | in-ear | in-ear |
| Wearing Style | true wireless | — |
| Ear Tips | 5 x Eartip Pairs | S, M & L Silicone Cushions and S & M Foam Cushions |
| Weight | 0.05 kg★ | 0.22 kg |
| Audio | ||
| Driver Type | dynamic | dynamic |
| Driver Size | 10 mm★ | — |
| Drivers | 1★ | — |
| Freq Min | 20 Hz | 10 Hz★ |
| Freq Max | 40 kHz★ | 25 kHz |
| Impedance | — | 16 Ω |
| Sensitivity | — | 98 dB★ |
| Hi-Res Audio | ✓ | ✓ |
| Codecs | AAC, LC3, LDAC, SBC | Koss KEB90 Utility Earbud, Detachable Interchangeable Cord System, Noise Isolation Design, Stealth Grey |
| 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★ | — |
| Case Battery | ||
| Case Battery | 28 hrs★ | — |
| Case Charging | USB-C★ | — |
| Wireless Charging | ✓★ | — |
| Microphone | ||
| Microphone | ✓ | ✓ |
| Mic Count | 6★ | — |
| NC Mic | ✓★ | — |
| Features | ||
| Touch Controls | ✓★ | ✗ |
| App | Android & iOS | — |
| Volume Limiting | ✗ | — |
| Gaming Mode | ✗ | — |
| Bone Conduction | ✗ | — |
| Water Resistance | IPX4 | — |
Pros & Cons
Technics EAH-AZ100-K
- Strong connectivity (99th percentile)99th %ile
- Strong sound (99th percentile)99th %ile
- Strong mic (98th percentile)98th %ile
- Strong anc (97th percentile)97th %ile
Koss Utility 21299195352
- Strong sound (78th percentile)
- Below average connectivity (13th percentile)13th %ile
- Below average user sentiment (16th percentile)16th %ile
- Below average comfort (30th percentile)
- Below average social proof (31st percentile)
Verdict
Scores 100 overall, wins 7 of 7 usage categories and 19 of 39 specs.