Technics EAH-AZ80-K
Score: 83/100
Bose QuietComfort Ultra
Score: 72/100Rankings
The Technics EAH-AZ80-K provides high-resolution audio, effective dual-hybrid ANC, and a rich feature set including multipoint pairing and wireless charging. Its battery life and touch-control sensitivity are the main drawbacks for power users.
The Bose QuietComfort Ultra delivers top-tier ANC, immersive head-tracked audio, and high-resolution aptX Adaptive sound, but its battery life and lack of wireless charging limit endurance.
| Attribute | | |
|---|---|---|
7 hoursbest | 5 hours | |
10 mmbest | 9.3 mm | |
20 Hzbest | — | |
40,000 Hzbest | — | |
| ↓ lower better | 57 g | 20 gbest |
12 monthsbest | 12 monthsbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Audio(2) | ||
Driver Size (mm) | 10 mm | 9.3 mm |
Supported Codecs | SBC, AAC, LDAC | aptX Adaptive, AAC, SBC |
Build & Design(2) | ||
Weight (g) | 57 g | 20.0 g |
Ear Tip Sizes | XS1, XS2, S1, S2, M, L, XL | 9 |
Battery & Power(1) | ||
Battery Life (hours) | 7 hours | 5 hours |
Products in the top-left offer the best value (high score, low price).
Professional reviewers praised the AZ80 for its rich sound, effective hybrid ANC, and excellent call quality, earning high marks from CNET and HIFI Trends.
Everyday users highlight the superb audio fidelity, comfortable fit, and long case battery life, while repeatedly noting the reduced LDAC runtime, touch-control sensitivity, and limited tip selection on the newer model.
Professional reviewers praise the QuietComfort Ultra for its unrivaled ANC, comfortable ergonomics, and immersive spatial audio, while noting the lack of wireless charging and modest battery life.
Everyday users overwhelmingly applaud the earbuds' noise cancellation, immersive soundstage and comfort, but complain about the missing wireless charging, bulky case, and short battery life.
“The sound is rich and detailed, perfect for my daily commute.”
“Touch controls are too sensitive; I keep pausing my music unintentionally.”
“Battery lasts all day with ANC off, but drops fast with LDAC.”
