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Denon AH-C840NCW vs Technics EAH-AZ100: which should you buy?

Specs, scores and condensed review verdicts for the Denon AH-C840NCW vs Technics EAH-AZ100, side by side. Where a product has no HearWiki score yet, not enough reviews have been aggregated to rate it.

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.

  • Denon AH-C840NCW
  • Technics EAH-AZ100
HearWiki score
-
86
Sound
-
9.2
Noise cancelling
-
8.6
Battery
-
8.7
Calls
-
7.8
Value
-
8.1
Price (USD)
$160
$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?

Half a step newer

Both shipped in 2025. The Denon AH-C840NCW edges ahead on platform, but only just: ANC type Adaptive against Hybrid.

  • AH-C840NCW2025
  • EAH-AZ1002025
What differsAH-C840NCWEAH-AZ100

Platform

ANC type
Adaptive
Hybrid

Level on: Bluetooth, Top codec, LE Audio (LC3), Multipoint pairing, Wireless charging, Transparency mode, Custom EQ, Companion app, Water resistance.

Specifications

AH-C840NCWEAH-AZ100
Type
True Wireless
True Wireless
Price (USD)
$160
$250
HearWiki score
Not scored
86
Released
2025
2025
Availability
Sold new
Sold new
Driver
12 mm dynamic
10 mm dynamic
Driver type
dynamic
dynamic
Driver size
12 mm
10 mm
Drivers per side
-
1
Frequency response
-
20 Hz - 40 kHz
Impedance
-
16 Ω
Bluetooth
5.3
5.3
Codecs
SBC, AAC, LC3
SBC, AAC, LC3, LDAC
Multipoint pairing
Yes
Yes
Wireless range
-
10 m
Battery life
10 h
12 h
Battery life (ANC on)
7 h
10 h
Battery incl. case
35 h
28 h
Full charge time
120 min
120 min
Quick charge
5 min → 1 h
15 min → 1.2 h
Wireless charging
Yes
Yes
Active noise cancelling
Yes
Yes
ANC type
adaptive
hybrid
Transparency mode
Yes
Yes
Companion app
Yes
Yes
Custom EQ
Yes
Yes
Wear detection
-
Yes
Controls
touch
touch
Voice assistant
-
Yes
Weight
5.1 g
11.8 g
Case weight
54 g
42 g
Water resistance
IPX4
IPX4
USB-C
-
Yes
Microphones
2
2
Microphone type
-
MEMS

What reviewers said

Denon AH-C840NCW

The Denon AH-C840NCW true wireless earbuds combine adaptive hybrid noise cancellation with a 12mm dynamic driver for a rich, signature sound. They offer a robust feature set including Bluetooth 5.3, multipoint connectivity, a transparency mode, wireless charging, and an IPX4 rating for sweat and splash resistance. With up to 10 hours of playback on a single charge and 35 hours total with the case, these earbuds are built for extended listening sessions.

  • Pro:Adaptive hybrid ANC effectively reduces ambient noise
  • Pro:Comfortable 5.1g earbud weight with IPX4 water resistance
  • Pro:Wireless charging case and quick charge feature for convenience
  • Con:Battery life drops to 7 hours with ANC enabled
  • Con:No mention of high-resolution audio codecs like LDAC or aptX
  • Con:Touch controls may require a learning curve

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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New comparisonDenon AH-C840NCWTechnics EAH-AZ100