COOSII AC01
form factor over-ear
driver type dynamic
driver size mm 40
impedance ohms 32
open closed back closed
51 Overall Score
Price ¥7,303
Snapshot
Pros & Cons
Pros
- Strong comfort (86th percentile) 86th
- Strong social proof (83rd percentile) 83rd
- Strong mic (76th percentile) 76th
- Strong sound (74th percentile) 74th
Cons
- Below average connectivity (27th percentile)
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 held steady over time
Based on 12 dated customer reviews, grouped by calendar quarter. Period analysis is in English.
The proof
Performance
Specifications
Full Specifications
Design
| Form Factor | over-ear |
| Open/Closed | closed |
| Foldable | Yes |
| Ear Cushion | protein leather |
| Headband | TPU |
Audio
| Driver Type | dynamic |
| Driver Size | 40 |
| Impedance | 32 |
| Codecs | AC01 Headphones Wired Over Ear, Corded Stereo Headsets with Microphone Volume Control for Adults Teens Kids 3.5mm for Cellphones, Tablets, Laptop, Chromebook (Black Grey) |
| Surround | AC01 Headphones Wired Over Ear, Corded Stereo Headsets with Microphone Volume Control for Adults Teens Kids 3.5mm for Cellphones, Tablets, Laptop, Chromebook (Black Grey) | AC01 Headphones Wired Over |
Noise Control
| Transparency | Yes |
Connectivity
| Wireless | No |
| Wired Connector | 3.5mm |
Microphone
| Microphone | Yes |
| NC Mic | Yes |
vs Competition
| Spec | COOSII AC01 | Sony ULT WEAR WHULT900N/B | Sennheiser MOMENTUM 4 | Bose QuietComfort 884367-1100 | Beyerdynamic Aventho 1001609 | Skullcandy Aviator S6AVW-T740 |
|---|---|---|---|---|---|---|
| Form Factor | over-ear | over-ear | over-ear | over-ear | on-ear | over-ear |
| Driver Type | dynamic | dynamic | dynamic | dynamic | dynamic | dynamic |
| Driver Size (mm) | 40 | 40 | 42 | - | 45 | 40 |
| Impedance Ohms | 32 | 314 | 470 | 32 | 48 | 36 |
| Wireless | false | true | true | true | true | true |
| Active Noise Cancellation | - | true | true | true | true | true |
| Open Closed Back | closed | closed | closed | closed | closed | closed |
| Bluetooth Version | - | 5.2 | 5.2 | 5.1 | 5.4 | 5.3 |
| Battery Life Hours | - | 30 | 60 | 24 | 40 | 60 |
| Compare | Compare | Compare | Compare | Compare |
| Product | Anc | Mic | Build | Sound | Battery | Comfort | Connectivity | Social Proof |
|---|---|---|---|---|---|---|---|---|
| COOSII AC01 | 69.4 | 75.5 | 37.9 | 74.1 | 52.6 | 85.8 | 27.1 | 83.4 |
| Sony ULT WEAR WHULT900N/B Compare | 98.5 | 89.4 | 81.4 | 96.9 | 82.1 | 62.2 | 99.2 | 89.6 |
| Sennheiser MOMENTUM 4 Compare | 98.5 | 89.4 | 93.8 | 98.5 | 93.1 | 91 | 98.6 | 72.2 |
| Bose QuietComfort 884367-1100 Compare | 92 | 75.5 | 93.8 | 52.8 | 79.6 | 85.8 | 95 | 89.6 |
| Beyerdynamic Aventho 1001609 Compare | 98.5 | 84.9 | 96.3 | 98.8 | 86.1 | 62.2 | 98.3 | 61.6 |
| Skullcandy Aviator S6AVW-T740 Compare | 98.5 | 93.5 | 93.8 | 93.7 | 93.1 | 91 | 96.9 | 83.4 |
Price
Value & Pricing
From ¥7,303
Amazon.co.jp 1 offer From ¥7,303
We started tracking prices for this product on Jul 22, 2026. The chart appears once we have more data.
Usage Scores
A full written review is coming soon. The specs, scores, prices and charts above are always up to date.
