Products
Technics EAH-AZ80
Sennheiser MOMENTUM True Wireless 4
Tested using Methodology v2.0
Updated Nov 04, 2025 07:49 PM
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Tested using Methodology v2.0
Updated Nov 14, 2025 05:33 PM
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TypeIn-ear
Noise CancellingYes
EnclosureClosed-Back
Bass Amount
Emphasized (4 dB)
WirelessTruly Wireless
TransducerDynamic
Treble Amount
Balanced (-1 dB)
MicYes
Sound Signature
Warm
TypeIn-ear
Noise CancellingYes
EnclosureClosed-Back
Bass Amount
Emphasized (3 dB)
WirelessTruly Wireless
TransducerDynamic
Treble Amount
Underemphasized (-4 dB)
MicYes
Sound Signature
Warm
Our Verdict
Technics EAH-AZ80
Sennheiser MOMENTUM True Wireless 4
The Sennheiser MOMENTUM True Wireless 4 and the Technics EAH-AZ80 are premium buds with premium feature sets. They both offer a comparable battery life performance and are similarly well-constructed. While both provide a great level of attenuation against ambient sound, the Sennheiser have the edge here, blocking out more external noise across the entire frequency range. They also support the aptX Adaptive suite and LE Audio. That said, the Technics have a more comfortable fit and LDAC support, and they feature three-way Bluetooth multi-device connectivity for staying connected to multiple devices on the go.
Variants
- EAH-AZ80 (Black)
- EAH-AZ80 (Midnight Blue)
- EAH-AZ80 (Silver)
- MOMENTUM True Wireless 4 (Copper)
- MOMENTUM True Wireless 4 (Graphite)
- MOMENTUM True Wireless 4 (White)
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Black
EAH-AZ80
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Copper
MOMENTUM True Wireless 4
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Midnight Blue
EAH-AZ80
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Amazon.com
Graphite
MOMENTUM True Wireless 4
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Silver
EAH-AZ80
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White
MOMENTUM True Wireless 4
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Main Differences for
Sports And Fitness
Sports And Fitness
Threshold
Sports And Fitness
8.1
7.8
Bluetooth Connection
8.3
7.0
Comfort
7.5
7.0
Full Comparison
Sound
Sound Profile
Sound Profile
Normalization Frequency
1,050 Hz
900 Hz
Bass Amount
Emphasized (4 dB)
Emphasized (3 dB)
Treble Amount
Balanced (-1 dB)
Underemphasized (-4 dB)
Sound Signature
Warm
Warm
Frequency Response Consistency
9.4
8.7
Consistency L
Consistency R
Std. Deviation
0.28 dB
0.57 dB
Bass Profile: Target Compliance
8.2
8.5
Bass Profile: Target Compliance
RMS Deviation From Target
4.0 dB
3.6 dB
Low-Frequency Extension
20 Hz
20 Hz
Low Bass
3.66 dB
4.58 dB
Mid Bass
3.96 dB
2.77 dB
High Bass
4.31 dB
2.38 dB
Mid-Range Profile: Target Compliance
8.6
9.4
Mid-Range Profile: Target Compliance
RMS Deviation From Target
1.82 dB
1.03 dB
Low Mid
2.38 dB
0.64 dB
Mid-Mid
-1.33 dB
-0.49 dB
High Mid
-0.06 dB
1.08 dB
Treble Profile: Target Compliance
8.9
7.1
Treble Profile: Target Compliance
RMS Deviation From Target
2.6 dB
4.11 dB
Low Treble
-3.02 dB
-3.3 dB
Mid Treble
0.68 dB
-4.01 dB
High Treble
-2.43 dB
-1.03 dB
Peaks/Dips
8.5
7.8
Peaks/Dips Graph
Peaks
0.81 dB
1.25 dB
Dips
1.58 dB
1.65 dB
Stereo Mismatch
8.7
9.0
Frequency Response Mismatch
Phase Response Mismatch
Weighted Amplitude Mismatch
0.28 dB
0.03 dB
Weighted Frequency Response Mismatch
0.44 dB
0.62 dB
Weighted Phase Mismatch
0.8°
1.1°
Cumulative Spectral Decay
CSD
PRTF
0.0
0.0
PRTF
PRTF Accuracy (RMS Deviation)
N/A
N/A
PRTF Size (Avg.)
N/A
N/A
PRTF Distance
N/A
N/A
Harmonic Distortion
9.3
8.3
Harmonics Levels
THD Ratio
WHD @ 94 dB SPL
0.10%
0.22%
WHD @ 104 dB SPL
0.07%
0.32%
Electrical Aspects
Impedance
Sensitivity @1kHz-1V
N/A
N/A
Bluetooth Max SPL
100.0 dB
104.2 dB
Virtual Soundstage
0.0
0.0
Virtual Soundstage
Head Modeling
No
No
Speaker Modeling
No
No
Room Ambience
No
No
Head Tracking
No
No
Virtual Surround
No
No
Test Settings
Firmware
JNQ1ZH 1.031
5.15.4
Power
On
On
Connection
Bluetooth
Bluetooth
Codec
SBC, 16-bit, 48kHz
aptX, 32-bit, 48kHz
Test Instrument
Audio Precision APx517B
Audio Precision APx517B
EQ
Direct
Default
ANC
Max
On
Tip/Pad
Silicone (small)
Silicone (small)
Microphone
Integrated
Integrated
Design
Style
Design Picture 2
Type
In-ear
In-ear
Enclosure
Closed-Back
Closed-Back
Wireless
Truly Wireless
Truly Wireless
Transducer
Dynamic
Dynamic
Comfort
7.5
7.0
Comfort Picture
Weight
0.03 lbs
0.03 lbs
Clamping Force
0 lbs
0 lbs
Controls
8.1
7.5
Controls Picture
OS Compatibility
Not OS specific
Not OS specific
Ease Of Use
Good
Okay
Feedback
Good
Good
Call/Music Control
Yes
Yes
Volume Control
Yes
Yes
Microphone Control
Mute/Unmute
No
Channel Mixing
No
No
Noise Cancelling Control
On/Off
On/Off
Talk-Through
On/Off
On/Off
Additional Controls
Voice Assistant
Voice Assistant
Portability
9.3
9.4
Portability Picture
L
1.5" (3.7 cm)
1.3" (3.4 cm)
W
1.2" (3.1 cm)
1.2" (3.1 cm)
H
1.1" (2.8 cm)
0.9" (2.2 cm)
Volume
2.00 in³ (32.71 cm³)
1.46 in³ (23.88 cm³)
Transmitter Required
No
No
Case
8.0
8.0
Case Picture
Type
Hard case
Hard case
L
2.7" (6.8 cm)
2.8" (7.0 cm)
W
1.1" (2.8 cm)
1.8" (4.5 cm)
H
1.4" (3.6 cm)
1.4" (3.5 cm)
Volume
4.17 in³ (68.37 cm³)
6.63 in³ (108.58 cm³)
Build Quality
8.0
8.0
Build Quality Picture
Stability
8.0
8.0
Stability Picture
Headshots 1
Angled Picture
Side Picture
Headshots 2
Front Picture
Rear Picture
Top
Top Picture
In The Box
In The Box Picture
Isolation
Noise Isolation - Full Range
8.3
8.9
Noise Isolation - Full Range Graph
Noise Cancelling
Yes
Yes
Overall Attenuation
-21.87 dB
-23.88 dB
Bass
-15.29 dB
-15.78 dB
Mid
-22.99 dB
-27.19 dB
Treble
-28.61 dB
-30.06 dB
Noise Isolation - Common Scenarios
8.2
8.6
Noise Isolation - Common Scenarios Graph
Airplane Noise Attenuation
-18.57 dB
-21.64 dB
Airplane Noise Isolation Audio
N/A
Office Noise Attenuation
-19.55 dB
-19.71 dB
Office Noise Isolation Audio
N/A
Street Noise Attenuation
-19.68 dB
-19.51 dB
Street Noise Isolation Audio
N/A
Noise Isolation - Voice Handling
Female Voice 1
N/A
Male Voice 1
N/A
Female Voice 2
N/A
Male Voice 2
N/A
Leakage
8.7
9.9
Leakage
Leakage Audio
Overall Leakage @ 1ft
29.35 dB
21.8 dB
Microphone
Microphone Style
Integrated
Yes
Yes
In-Line
No
No
Boom
No
No
Detachable Boom
No
No
Mic
Yes
Yes
Recording Quality
6.4
7.6
Microphone Frequency Response
Recorded Speech
LFE
306.43 Hz
243.22 Hz
FR Std. Dev.
3.41 dB
3.78 dB
HFE
4,763.35 Hz
6,834.38 Hz
Weighted THD
38.834
0.318
Gain
33.78 dB
28.26 dB
Noise Handling
6.1
6.3
SpNR
SpNR
17.55 dB
16.29 dB
Noise Gate
Always On
Always On
Speech + Pink Noise Handling
6.5
6.5
Speech + Pink Noise Audio Sample
Speech + Subway Noise Handling
5.5
6.0
Speech + Subway Noise Audio Sample
Active Features
Battery
7.4
7.5
Battery Type
Rechargable
Rechargable
Continuous Battery Life
7.3 hrs
7.3 hrs
Additional Charges
2.0
3.0
Total Battery Life
21.9 hrs
29.2 hrs
Charge Time
1.2 hrs
0.9 hrs
Power-Saving Feature
Auto-Off Timer and Standby Mode
Auto-Off Timer and Standby Mode
Audio While Charging
Yes
Yes
Passive Playback
No
No
Charging Port
USB-C
USB-C
App Support
8.0
8.0
App Picture
App Name
Technics
Sennheiser Smart Control
iOS
Yes
Yes
Android
Yes
Yes
macOS
No
No
Windows
No
No
Equalizer
Graphic + Presets
Graphic + Presets
ANC Control
Adjustable
On/Off
Mic Control
No
No
Room Effects
No
No
Playback Control
No
No
Button Mapping
Yes
Yes
Surround Support
No
No
Connectivity
Wired Connection
0.0
0.0
Cable Picture
Analog Audio
No
No
USB Audio
No
No
Detachable
No
No
Length
N/A
N/A
Connector
No Wired Option
No Wired Option
Latency - Analog
N/A
N/A
Latency - USB
N/A
N/A
Recorded Latency
N/A
N/A
Recorded Latency Connection
No Wired Audio
No Wired Audio
Bluetooth Connection
8.3
7.0
Bluetooth Version
5.3
5.3
Multi-Device Pairing
3 Devices
2 Devices
Quick Pair (Android)
No
No
Quick Pair (iOS)
No
No
Line Of Sight Range
311.68 ft (95.00 m)
187.01 ft (57.00 m)
Latency - SBC
321 ms
270 ms
Latency - aptX
N/A
259 ms
Latency - aptX Adaptive (High Quality)
N/A
371 ms
Latency - aptX Adaptive (Low Latency)
N/A
93 ms
Latency - LDAC
302 ms
N/A
Recorded Latency
Recorded Latency Codec
LDAC
aptX Adaptive (Low Latency)
AAC Support
Yes
Yes
Wireless Connection (Dongle)
0.0
0.0
Line Of Sight Range
N/A
N/A
Latency - Dongle
N/A
N/A
Recorded Latency
N/A
N/A
PC Compatibility
Analog
No
No
Wired USB
No
No
Non-BT Wireless
No
No
PlayStation Compatibility
PS4 Analog
No
No
PS4 Wired USB
No
No
PS4 Non-BT Wireless
No
No
PS5 Analog
No
No
PS5 Wired USB
No
No
PS5 Non-BT Wireless
No
No
Xbox Compatibility
Xbox One Analog
No
No
Xbox One Wired USB
No
No
Xbox One Non-BT Wireless
No
No
Xbox Series X|S Analog
No
No
Xbox Series X|S Wired USB
No
No
Xbox Series X|S Non-BT Wireless
No
No
Base/Dock
2.2
2.2
Type
Charging Case
Charging Case
USB Input
No
No
Line In
No
No
Line Out
No
No
Optical Input
No
No
RCA Input
No
No
Dock Charging
Yes
Yes
Power Supply
USB-C
USB-C
Check Price
Black
EAH-AZ80
SEE PRICE
Amazon.com
Copper
MOMENTUM True Wireless 4
SEE PRICE
BestBuy.com
Midnight Blue
EAH-AZ80
SEE PRICE
Amazon.com
Graphite
MOMENTUM True Wireless 4
SEE PRICE
BestBuy.com
Silver
EAH-AZ80
SEE PRICE
Amazon.com
White
MOMENTUM True Wireless 4
SEE PRICE
Amazon.com
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Technics EAH-AZ80
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Technics EAH-AZ80 vs Sennheiser MOMENTUM True Wireless 4: Main Discussion
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