Koss Utility 21299195352
The stainless steel chassis and detachable interchangeable cord system offer uncommon durability and repairability for a wired in-ear monitor. Its Hi-Res capable dynamic driver and included foam cushions provide a noise-isolating fit, though its 28/100 music score indicates a non-reference tuning. This earbud is best for users who prioritize a rugged, modular build for daily utility over critical listening.
form factor in-ear
driver type dynamic
25 Overall Score
Price ¥0
Snapshot
What owners think
How owner sentiment changed over time
ExclusiveBased on when customers actually wrote their reviews - so you can see whether early praise held up.
Owner sentiment has cooled since launch
65/100Our AI sentiment read
Based on 7 dated customer reviews, grouped by calendar quarter. Period analysis is in English.
The proof
Performance
Specifications
Full Specifications
Design
| Form Factor | in-ear |
| Ear Tips | S, M & L Silicone Cushions and S & M Foam Cushions |
| Weight | 0.2 kg / 0.5 lbs |
Audio
| Driver Type | dynamic |
| Freq Min | 10 |
| Freq Max | 25000 |
| Impedance | 16 |
| Sensitivity | 98 |
| Hi-Res Audio | Yes |
| Codecs | Koss KEB90 Utility Earbud, Detachable Interchangeable Cord System, Noise Isolation Design, Stealth Grey |
Noise Control
| ANC | No |
| Transparency | No |
Microphone
| Microphone | Yes |
Features
| Touch Controls | No |
vs Competition
| Spec | Koss Utility 21299195352 | Technics EAH-AZ100 EAH-AZ100-K | Sony WF-1000XM6 | Samsung Galaxy Buds3 Pro | Bose QuietComfort Ultra 896637-0010 | Apple AirPods Pro 3 |
|---|---|---|---|---|---|---|
| Form Factor | in-ear | in-ear | in-ear | in-ear | in-ear | in-ear |
| Driver Type | dynamic | dynamic | dynamic | dynamic | dynamic | dynamic |
| Wireless | - | true | true | true | true | true |
| Active Noise Cancellation | false | true | true | true | true | true |
| Bluetooth Version | - | 5.3 | 5.3 | 5.4 | 5.3 | 5.3 |
| Battery Life Hours | - | 8 | 8 | 6 | 6 | 8 |
| Case Battery Hours | - | 28 | 24 | 26 | 18 | 24 |
| Water Resistance | - | IPX4 | IPX4 | IP57 | IPX4 | IP57 |
| Multipoint | - | true | true | true | true | true |
| Compare | Compare | Compare | Compare | Compare |
| Product | Anc | Mic | Build | Sound | Battery | Comfort | User Sentiment | Connectivity | Social Proof |
|---|---|---|---|---|---|---|---|---|---|
| Koss Utility 21299195352 | 31.8 | 44 | 35 | 78.2 | 48.8 | 29.8 | 15.9 | 13.4 | 31 |
| Technics EAH-AZ100 EAH-AZ100-K Compare | 97.4 | 97.5 | 81.4 | 99.1 | 82 | 73.8 | 92.1 | 99.2 | 81.4 |
| Sony WF-1000XM6 Compare | 97.4 | 99.8 | 81.4 | 89.2 | 79.2 | 73.8 | 80.1 | 99.2 | 81.4 |
| Samsung Galaxy Buds3 Pro Compare | 97.4 | 97.5 | 98.9 | 93.5 | 76.9 | 94.7 | 80.1 | 99.7 | 90.3 |
| Bose QuietComfort Ultra 896637-0010 Compare | 97.4 | 91.9 | 81.4 | 97 | 48.8 | 94.7 | 92.1 | 98.1 | 90.3 |
| Apple AirPods Pro 3 Compare | 97.4 | 83.9 | 98.9 | 91.5 | 79.2 | 94.7 | 31.6 | 99.7 | 99.4 |
Price
Value & Pricing
We started tracking prices for this product on May 4, 2026. The chart appears once we have more data.
