True Wireless
Technics EAH-AZ100
86Outstanding
$250
Full review dataTechnics EAH-AZ100 vs Technics EAH-AZ40: 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.
True Wireless
Technics EAH-AZ40
61Average
$150
Full review dataScore 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-AZ40
HearWiki score
86
61
Sound
9.2
7.0
Noise cancelling
8.6
-
Battery
8.7
7.0
Calls
7.8
7.0
Value
8.1
7.0
Price (USD)
$250
$150
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-AZ40 (2021). The Technics EAH-AZ100 is the newer platform here: Bluetooth 5.3 against 5.2, Top codec LC3 against AAC, LE Audio (LC3) and ANC type Hybrid against None. It also adds Wireless charging and Wear detection.
- EAH-AZ10020254 yr newer
- EAH-AZ402021
What differsEAH-AZ100EAH-AZ40
- Bluetooth
- 5.3
- 5.2
- Top codec
- LC3
- AAC
- LE Audio (LC3)
- Yes
- No
- ANC type
- Hybrid
- None
- Wireless charging
- Yes
- No
- Wear detection
- Yes
- No
Platform
Everyday features
Level on: Multipoint pairing, USB-C, Transparency mode, Custom EQ, Companion app, Water resistance.
Specifications
EAH-AZ100EAH-AZ40
- Type
- True Wireless
- True Wireless
- Price (USD)
- $250
- $150
- HearWiki score
- 86
- 61
- Released
- 2025
- 2021
- Availability
- Sold new
- Discontinued
- Driver
- 10 mm dynamic
- 2× 6 mm dynamic
- Driver type
- dynamic
- dynamic
- Driver size
- 10 mm
- 6 mm
- Drivers per side
- 1
- 2
- Frequency response
- 20 Hz - 40 kHz
- 20 Hz - 20 kHz
- Impedance
- 16 Ω
- -
- Bluetooth
- 5.3
- 5.2
- Codecs
- SBC, AAC, LC3, LDAC
- SBC, AAC
- Multipoint pairing
- Yes
- Yes
- Wireless range
- -
- 10 m
- Battery life
- 12 h
- 7.5 h
- Battery life (ANC on)
- 10 h
- -
- Battery incl. case
- 28 h
- 25 h
- Full charge time
- 120 min
- 120 min
- Quick charge
- 15 min → 1.2 h
- -
- Wireless charging
- Yes
- No
- Active noise cancelling
- Yes
- No
- ANC type
- hybrid
- none
- Transparency mode
- Yes
- Yes
- Companion app
- Yes
- Yes
- Custom EQ
- Yes
- Yes
- Wear detection
- Yes
- No
- Controls
- touch
- touch
- Voice assistant
- Yes
- Alexa, Siri
- Weight
- 11.8 g
- 5 g
- Case weight
- 42 g
- 30 g
- Water resistance
- IPX4
- IPX4
- USB-C
- Yes
- Yes
- Microphones
- 2
- 6
- Microphone type
- -
- MEMS
What reviewers said
Technics EAH-AZ100
The Technics EAH-AZ100 are high-end true wireless earbuds that combine adaptive noise cancellation with a 10mm dynamic driver for rich sound, supporting LDAC and AAC codecs. They deliver up to 12 hours of playback on a single charge (10 with ANC), extend to 28 hours with the case, and offer multipoint pairing for up to three devices. With IPX4 sweat resistance, wireless charging, and touch controls, they're a versatile premium option.
- Pro:Excellent battery life, even with ANC engaged
- Pro:Multipoint connectivity for up to three devices
- Pro:Supports high-resolution LDAC audio
- Con:Premium price point
- Con:No ear tips included in the box
- Con:Touch controls may take time to master
Technics EAH-AZ40
The Technics EAH-AZ40 earbuds deliver accurate audio and solid call quality in a lightweight, comfortable design, with useful extras like Bluetooth 5.2 and multipoint pairing. However, they lack active noise cancellation, wear detection, and advanced codecs, and their bass-heavy tuning can falter on complex rhythmic tracks. Overall, they are capable everyday buds that stop short of being top-tier due to missing premium features.
- Pro:Accurate, detailed sound signature
- Pro:Reliable multipoint connection via Bluetooth 5.2
- Pro:Lightweight and comfortable for extended wear
- Con:No active noise cancellation or wear sensors
- Con:Only SBC/AAC codecs, no aptX or LDAC
- Con:Bass can overpower rhythm in busy tracks
Summaries are AI-condensed and paraphrased from published reviews and specs - not original hands-on testing. More on our method.
Compare something else
Swap either side out, or start again from the picker.