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Technics

Technics EAH-AZ40

Name: Technics EAH-AZ40
Brand: Technics
SKU: B00JFU4OXU
Price: 99.99 USD

Run and blast your music, or phone a friend.

Current price · Amazon US

$99.99

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Price last checked 6m ago

Noise Isolation

4.3/ 10

4.3

0.010.0

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

Measured on 134 of the 264 we've cataloged.

See the lab data ↓Frequency response · Isolation

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Key specs

Battery Life Earbuds

6.42 hBelow average

6.42 h

2 h15 h

below average for wireless earbuds — based on 248 of 264 we've cataloged.

Battery Life With Case

25 hBelow average

25 h

7 h60 h

below average for wireless earbuds — based on 246 of 264 we've cataloged.

IP Rating

IPX4Most common

IPX435%IP5517%IP5416%IPX510%

IPX4 is the most common — on 35% of the 243 wireless earbuds we've cataloged (of 264).

Noise Cancellation Type

Passive

Active60%Passive16%Hybrid9%None8%

Passive appears on 16% of the 177 wireless earbuds we've cataloged (of 264).

Battery

Battery Life Earbuds: 6.42 h
Battery Life With Case: 25 h

Build

IP Rating: IPX4
Water Resistance: Yes

Sound

Noise Cancellation Type: Passive
Ambient Mode: Adjustable level
Driver Count: 1
Driver Size: 6 mm
Driver Type: Dynamic

Connectivity

Bluetooth Version: 5.2
Bluetooth Codec: SBC, AAC
Latency: 60 ms
Multipoint Devices: 2 devices

Design

Earbud Form Factor: In-ear
Color Options: Black, rose gold, silver
Ear Tip Material: Silicone
Ear Tip Sizes Included: 10mm, 11mm, 12mm, 13mm
Wearing Style: Deep insert
Weight Per Earbud: 5 g
Weight With Case: 40 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

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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Technics EAH-AZ40SoundGuys Headphone Preference Curve

Measured frequency response (dB relative) against the SoundGuys Headphone Preference Curve. When the measurement goes above the dashed line, that frequency is louder than our preference curve, and when it goes below: it's quieter. Use the curve for comparison purposes only, as your taste may vary.

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
315	0.0
400	-1.1
500	-2.7
630	-2.6
800	-1.6
1000	0.0
1250	1.2
1600	2.6
2000	4.4
2500	5.9
3150	4.1
4000	1.3
5000	1.1
6300	7.6
8000	9.0
10000	6.8
12500	1.8
16000	-15.1
20000	-40.2

Technics EAH-AZ40

Passive isolation (dB) with ANC off — how much ambient noise the fit blocks on its own. Higher on the chart means more attenuation.

Technics EAH-AZ40: passive isolation, as measured in the SoundGuys lab. Frequency in hertz.
Frequency (Hz)	Attenuation (dB)
21	0.3
26	1.0
33	0.4
41	0.5
52	0.5
65	0.6
82	0.5
103	-0.1
130	-0.6
163	0.8
205	1.4
259	1.0
325	2.7
410	7.8
516	8.5
613	9.8
772	12.0
972	14.5
1220	18.0
1540	21.1
1940	24.5
2440	24.3
3070	24.1
3870	23.6
4870	25.7
6130	29.0
7720	37.8
9720	24.0
12200	18.0
15400	19.5
19400	36.9

SoundGuys review

SOUNDGUYS rating

7.0/ 10

Recommended

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.

✓Liked: Lightweight, Decent sound, Good microphone, Touch controls work well

✕Could be better: Secure, but invasive fit, EQ only okay, Multipoint is fussy, Unrefined app

Read the full SoundGuys review →

Owners

How we verify owners

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Owner reviews are not paid for, not solicited from specific owners, and not rewritten by us: at most we proofread typos, which is shown on the review’s own page and which the author can undo. The commission SoundGuys may earn on this page comes from retail links, never from owner reviews.

Own the Technics EAH-AZ40?

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