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Sennheiser CX vs Technics EAH-AZ100: 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.

  • Sennheiser CX
  • Technics EAH-AZ100
HearWiki score
58
86
Sound
7.1
9.2
Noise cancelling
-
8.6
Battery
7.4
8.7
Calls
6.0
7.8
Value
5.3
8.1
Price (USD)
$130
$250

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 Sennheiser CX (2021). The Technics EAH-AZ100 is the newer platform here: Bluetooth 5.3 against 5.2, Top codec LC3 against aptX, LE Audio (LC3) and ANC type Hybrid against None. It also adds Multipoint pairing and Wireless charging.

  • CX2021
  • EAH-AZ10020254 yr newer
What differsCXEAH-AZ100

Platform

Bluetooth
5.2
5.3
Top codec
aptX
LC3
LE Audio (LC3)
No
Yes
ANC type
None
Hybrid

Everyday features

Multipoint pairing
No
Yes
Wireless charging
No
Yes

Level on: USB-C, Wear detection, Custom EQ, Companion app, Water resistance.

Specifications

CXEAH-AZ100
Type
True Wireless
True Wireless
Price (USD)
$130
$250
HearWiki score
58
86
Released
2021
2025
Availability
Discontinued
Sold new
Driver
7 mm dynamic
10 mm dynamic
Driver type
dynamic
dynamic
Driver size
7 mm
10 mm
Drivers per side
1
1
Frequency response
5 Hz - 21 kHz
20 Hz - 40 kHz
Impedance
16 Ω
16 Ω
Bluetooth
5.2
5.3
Codecs
SBC, AAC, aptX
SBC, AAC, LC3, LDAC
Multipoint pairing
No
Yes
Wireless range
-
10 m
Battery life
9 h
12 h
Battery life (ANC on)
-
10 h
Battery incl. case
27 h
28 h
Full charge time
90 min
120 min
Quick charge
15 min → 1 h
15 min → 1.2 h
Wireless charging
No
Yes
Active noise cancelling
No
Yes
ANC type
-
hybrid
Transparency mode
-
Yes
Companion app
Yes
Yes
Custom EQ
Yes
Yes
Wear detection
Yes
Yes
Controls
touch
touch
Voice assistant
Yes
Yes
Weight
-
11.8 g
Case weight
37 g
42 g
Water resistance
IPX4
IPX4
USB-C
Yes
Yes
Microphones
4
2
Microphone type
-
MEMS

What reviewers said

Sennheiser CX

The Sennheiser CX True Wireless earbuds deliver solid audio performance with a punchy bass response, though the tuning leans slightly less airy than some predecessors. They offer excellent call quality, a comfortable IPX4 rating, and a strong 9-hour battery life per charge, with the case extending total playtime to 27 hours. While the design may not turn heads, the app support, customizable EQ, and reliable Bluetooth 5.2 connectivity make them a practical choice for everyday listening.

  • Pro:Excellent call quality
  • Pro:Long 9-hour battery per charge
  • Pro:IPX4 water resistance
  • Con:Sound tuning lacks sparkle
  • Con:No active noise cancellation
  • Con:Design feels plain

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

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

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