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Technics EAH-AZ401 / 9
Technics

Technics EAH-AZ40

Run and blast your music, or phone a friend.

Current price · Amazon US
$99.99
Check Price on Amazon

Price last checked 1d ago

Noise Isolation / ANC
4.3/ 10
4.3
0.010.0

A 4.3 puts its noise isolation / ANC in the bottom third of wireless earbuds we've measured.

Measured on 133 of the 271 we've cataloged.

Key specs

Battery Life Earbuds
8 hBelow average
6.42 h
3 h16 h

below average for wireless earbuds — based on 243 of 271 we've cataloged.

Battery Life With Case
24 hBelow average
24 h
7 h60 h

below average for wireless earbuds — based on 245 of 271 we've cataloged.

IP Rating
IPX4Most common
IPX433%IP5516%IP5415%IPX512%

IPX4 is the most common — on 33% of the 244 wireless earbuds we've cataloged (of 271).

Noise Cancellation Type
Active
Active61%Passive14%None9%Adaptive8%

Passive appears on 14% of the 172 wireless earbuds we've cataloged (of 271).

Battery

Battery Life Earbuds
8 h
Battery Life With Case
24 h
Battery Life Anc On
5.5 h

Build

IP Rating
IPX4
Water Resistance
Yes

Sound

Noise Cancellation Type
Active
Ambient Mode
Adjustable level
Driver Count
1
Driver Size
6 mm
Driver Type
Dynamic
Adaptive Anc
Yes

Connectivity

Bluetooth Version
5.2
Bluetooth Codec
LDAC, SBC, AAC
Latency
60 ms
Multipoint Devices
3 devices

Design

Earbud Form Factor
In-ear
Color Options
Black, rose gold, silver
Ear Tip Material
Silicone
Ear Tip Sizes Included
4 sizes
Wearing Style
Deep insert
Weight Per Earbud
5 g
Weight With Case
30 g

Features

Companion App
IOS + Android
Control Type
Touch controls
Eq Customization
Presets only
Auto Pause
No
Mono Mode
Yes
Voice Assistant Support
Alexa, Siri

Microphone

Count
6
Noise Reduction Type
Active

SoundGuys review

Read the full review ›
SOUNDGUYS rating
7.0/ 10
Recommended
Jasper Lastoria
Reviewed byJasper LastoriaWriterReviewed March 2022
Isolation4.3
Battery life6.3
Comfort & fit8.0
Connectivity5.0
Design7.0
Portability9.8
The verdict

The highlights of the Technics EAH-AZ40 include the secure fit, functional controls, good mic system, and reasonably pleasant frequency response. It's sweatproof and with surprisingly low latency (for its AAC/SBC codecs). The app could be better and the case sturdier, but it's highly portable and the buds look nice.

✓What we like
✓Lightweight
✓Decent sound
✓Good microphone
✓Touch controls work well
✓IPX4 rating (earbuds, not case)
✕What could be better
✕Secure, but invasive fit
✕EQ only okay
✕Multipoint is fussy
✕Unrefined app
Read the full SoundGuys review →

Lab data

How we test ›

Objective measurements from the SoundGuys test lab — overlay other models to see how this one compares.

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0 of 4 overlay slots used
Technics EAH-AZ40SoundGuys Headphone Preference Curve
Technics EAH-AZ40 frequency responseMeasured frequency response (dB) against the SoundGuys house target — the dashed curve. The closer the measured line tracks the target, the more neutral the tuning; peaks ride above the target, dips fall below it.-50-40-30-20-100+10+20201001k10k20k

Measured frequency response (dB) against the SoundGuys house target — the dashed curve. The closer the measured line tracks the target, the more neutral the tuning; peaks ride above the target, dips fall below it.

Frequency response — measurement data
Technics EAH-AZ40: frequency response, as measured in the SoundGuys lab. Frequency in hertz.
Frequency (Hz)Response (dB)
20-8.4
25-7.2
32-6.5
40-5.7
50-4.7
63-3.6
80-2.7
100-1.9
125-1.1
160-0.3
200-0.1
250-0.1
3150.0
400-1.1
500-2.7
630-2.6
800-1.6
10000.0
12501.2
16002.6
20004.4
25005.9
31504.1
40001.3
50001.1
63007.6
80009.0
100006.8
125001.8
16000-15.1
20000-40.2

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