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Technics EAH-AZ100 vs Technics EAH-AZ40M2: which should you buy?

On aggregated review scores the Technics EAH-AZ100 comes out ahead with a HearWiki score of 86. The full breakdown - sub-scores, specs and what reviewers actually said - is below.

Our pick: Technics EAH-AZ100 - Outstanding overall at around $250.

Score breakdown

Each axis is a 0–10 blend of what reviewers scored, not a lab measurement.

Technics EAH-AZ100 leads on 6 of 7 measures.

  • Technics EAH-AZ100
  • Technics EAH-AZ40M2
HearWiki score
86
72
Sound
9.2
7.5
Noise cancelling
8.6
6.2
Battery
8.7
6.3
Calls
7.8
6.4
Value
8.1
5.7
Price (USD)
$250
$170

Generation & platform

The scores rank quality. This is the other question: is the newer one actually newer technology, or the same platform in a new shell?

New platform

Technics EAH-AZ100 (2025) against Technics EAH-AZ40M2 (2023). The Technics EAH-AZ100 is the newer platform here: LE Audio (LC3) and ANC type Hybrid against Feed-forward.

  • EAH-AZ10020252 yr newer
  • EAH-AZ40M22023
What differsEAH-AZ100EAH-AZ40M2

Platform

LE Audio (LC3)
Yes
No
ANC type
Hybrid
Feed-forward

Level on: Bluetooth, Top codec, Multipoint pairing, Wireless charging, USB-C, Water resistance.

Specifications

EAH-AZ100EAH-AZ40M2
Type
True Wireless
True Wireless
Price (USD)
$250
$170
HearWiki score
86
72
Released
2025
2023
Availability
Sold new
Still sold new
Driver
10 mm dynamic
6 mm driver
Driver type
dynamic
-
Driver size
10 mm
6 mm
Drivers per side
1
1
Frequency response
20 Hz - 40 kHz
20 Hz - 40 kHz
Impedance
16 Ω
16 Ω
Bluetooth
5.3
5.3
Codecs
SBC, AAC, LC3, LDAC
SBC, AAC, LDAC
Multipoint pairing
Yes
Yes
Wireless range
10 m
10 m
Battery life
12 h
4 h
Battery life (ANC on)
10 h
3.5 h
Battery incl. case
28 h
18 h
Full charge time
120 min
120 min
Quick charge
15 min → 1.2 h
15 min → 1 h
Wireless charging
Yes
Yes
Active noise cancelling
Yes
Yes
ANC type
hybrid
feedforward
Transparency mode
Yes
-
Companion app
Yes
-
Custom EQ
Yes
-
Wear detection
Yes
-
Controls
touch
-
Voice assistant
Yes
-
Weight
11.8 g
5 g
Case weight
42 g
35 g
Water resistance
IPX4
IPX4
USB-C
Yes
Yes
Microphones
2
1
Microphone type
MEMS
MEMS

What reviewers said

Technics EAH-AZ100

The Technics EAH-AZ100 are premium true wireless earbuds that deliver rich, detailed sound through a 10mm dynamic driver, with support for high-resolution LDAC streaming. They combine effective hybrid active noise cancellation with a comfortable, IPX4-rated design, plus smart features like multipoint pairing and wireless charging for versatile daily use. With up to 12 hours of playtime on a single charge, they are built to last through long listening sessions.

  • Pro:Excellent sound quality with LDAC support
  • Pro:Strong hybrid ANC and transparency modes
  • Pro:Long battery life with wireless charging case
  • Con:Premium price point
  • Con:Touch controls may be overly sensitive
  • Con:No aptX codec support

Technics EAH-AZ40M2

The Technics EAH-AZ40M2 are a stylish and feature-rich pair of true wireless earbuds that deliver a spacious soundstage and solid performance for their mid-range price. They offer a good set of specifications, including LDAC support and wireless charging, but fall short of top-tier rivals in terms of bass punch and overall noise cancellation strength.

  • Pro:Spacious, open soundstage
  • Pro:Attractive, compact design
  • Pro:Robust feature set including LDAC and wireless charging
  • Con:Lacks punch and drive in bass
  • Con:Noise cancellation is only average for the price
  • Con:Battery life is modest, especially with ANC on

Summaries are AI-condensed and paraphrased from published reviews and specs - not original hands-on testing. More on our method.

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