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Notice: We're proud to introduce Test Bench 2.0, which overhauls our audio measurements, with new tests and usages. There's even a brand new multi-target graphing tool! You can read all about this in our changelog, featuring commentary from our Test Designer, Pierre. We'll also be holding an AMA on our Discord Channel on May 1.
- Table of Contents
- Top
- Main Differences
- Design
- Sound
- Isolation
- Microphone
- Active Features
- Connectivity
- Comments
Sennheiser CX True Wireless vs Sennheiser MOMENTUM Sport True Wireless
Side-by-Side Comparison
Products
Sennheiser CX True Wireless
Sennheiser MOMENTUM Sport
Tested using Methodology v1.5
Updated Jan 15, 2024 08:49 PM
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Amazon.comTested using Methodology v1.8
Updated Jan 16, 2025 07:17 PM
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Amazon.com
TypeIn-ear
Noise CancellingNo
EnclosureClosed-Back
WirelessTruly Wireless
TransducerDynamic
MicYes
TypeIn-ear
Noise CancellingYes
EnclosureSemi-Open
WirelessTruly Wireless
TransducerDynamic
MicYes
Variants
- CX (Black)
- CX (White)
- MOMENTUM Sport (Black)
- MOMENTUM Sport (Graphite)
- MOMENTUM Sport (Olive)
Our Verdict
Sennheiser CX True Wireless
Sennheiser MOMENTUM Sport True Wireless
The Sennheiser MOMENTUM Sport True Wireless have more features than the straightforward Sennheiser CX True Wireless. With the MOMENTUM Sport, you get active noise cancelling and biometric monitors integrated into the app. Their fit feels less invasive, and they're more water and dust-resistant. Their battery life is shorter, however. The CX True Wireless use the same app and can access similar EQ and control features. Their battery life is longer, but they lack noise cancelling and have a chunkier shape, and although they share the same water-resistant IP rating for the buds, their case is notably more basic.
Check Price
Black
CX
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Amazon.comBlack
MOMENTUM Sport
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Amazon.comWhite
CX
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Amazon.comGraphite
MOMENTUM Sport
SEARCH
Amazon.comOlive
MOMENTUM Sport
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Amazon.comMain Differences forNeutral Sound
Neutral Sound
Threshold
Neutral Sound
6.7
7.0
Bass Accuracy
7.2
8.5
Treble Accuracy
6.6
5.3
Mid Accuracy
8.0
8.7
Full Comparison
Design
Style
Design Picture 2
Type
In-ear
In-ear
Enclosure
Closed-Back
Semi-Open
Wireless
Truly Wireless
Truly Wireless
Transducer
Dynamic
Dynamic
Comfort
6.5
7.5
Comfort Picture
Weight
0.03 lbs
0.03 lbs
Clamping Force
0 lbs
0 lbs
Controls
6.8
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
No
No
Channel Mixing
No
No
Noise Cancelling Control
No
On/Off
Talk-Through
No
On/Off
Additional Controls
Voice Assistant
Voice Assistant
Breathability
9.2
Breathability After Picture
Avg.Temp.Difference
0.8 °C
Portability
9.3
9.4
Portability Picture
L
1.4" (3.5 cm)
1.4" (3.6 cm)
W
1.2" (3.1 cm)
1.5" (3.8 cm)
H
1.2" (3.0 cm)
0.7" (1.8 cm)
Volume
1.96 in³ (32.20 cm³)
1.50 in³ (24.62 cm³)
Transmitter Required
No
No
Case
7.5
8.0
Case Picture
Type
Hard case
Hard case
L
1.3" (3.3 cm)
2.6" (6.7 cm)
W
2.3" (5.9 cm)
2.5" (6.4 cm)
H
1.7" (4.2 cm)
1.2" (3.0 cm)
Volume
5.01 in³ (82.10 cm³)
7.85 in³ (128.64 cm³)
Build Quality
8.0
8.0
Build Quality Picture
Stability
7.5
8.5
Stability Picture
Headshots 1
Angled Picture
Side Picture
Headshots 2
Front Picture
Rear Picture
Top
Top Picture
In The Box
In The Box Picture
Sound
Sound Profile
Sound Profile
Normalization Frequency
400 Hz
Bass Amount
2.49 dB
3.6 dB
Treble Amount
-3.27 dB
-4.4 dB
Frequency Response Consistency
9.2
7.3
Consistency L
Consistency R
Avg. Std. Deviation
0.17 dB
0.55 dB
Raw Frequency Response
Bass Profile: Target Compliance
7.2
8.5
Bass Profile: Target Compliance
RMS Deviation From Target
4.38 dB
3.6 dB
Low-Frequency Extension
10 Hz
20 Hz
Low Bass
2.5 dB
3.9 dB
Mid Bass
4.9 dB
3.36 dB
High Bass
6 dB
3.26 dB
Mid-Range Profile: Target Compliance
8.0
8.7
Mid-Range Profile: Target Compliance
RMS Deviation From Target
2.64 dB
1.31 dB
Low Mid
4.06 dB
0.81 dB
Mid-Mid
0.01 dB
-1.25 dB
High Mid
0.18 dB
0.6 dB
Treble Profile: Target Compliance
6.6
5.3
Treble Profile: Target Compliance
RMS Deviation From Target
5.02 dB
4.76 dB
Low Treble
-5.35 dB
-4.59 dB
Mid Treble
-0.06 dB
-4.16 dB
High Treble
-2.62 dB
-6.29 dB
Peaks/Dips
7.4
7.8
Peaks/Dips Graph
Peaks
1.58 dB
1.3 dB
Dips
1.68 dB
1.42 dB
Imaging
9.3
8.6
Phase Response Mismatch
Weighted Group Delay
0.13
0.1
Weighted Phase Mismatch
2.14
2.85
Weighted Amplitude Mismatch
0.28
1.4
Weighted Frequency Mismatch
1.11
1.4
Passive Soundstage
0.9
0.9
PRTF
PRTF Accuracy (Std. Dev.)
N/A
N/A
PRTF Size (Avg.)
N/A
N/A
PRTF Distance
N/A
N/A
Openness
3.5
2.3
Acoustic Space Excitation
0.5
1.6
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
Weighted Harmonic Distortion
7.7
7.7
Weighted Harmonic Distortion
WHD @ 90
0.325
0.287
WHD @ 100
0.122
0.135
Test Settings
Firmware
1.6.8
3.18.51
Power
On
On
Connection
Bluetooth 5.0
Bluetooth
Codec
aptX, 16-bit, 48kHz
aptX, 32-bit, 48kHz
Test Instrument
Audio Precision APx517B
EQ
Neutral
Default
ANC
No ANC
On
Tip/Pad
Silicone (small)
Silicone (small)
Microphone
Integrated
Integrated
Isolation
Noise Isolation - Full Range
6.5
7.7
Noise Isolation - Full Range Graph
Noise Cancelling
No
Yes
Overall Attenuation
-18.46 dB
-19.88 dB
Isolation Audio
Bass
-5.22 dB
-13.57 dB
Mid
-18.11 dB
-21.04 dB
Treble
-33.29 dB
-26.27 dB
Noise Isolation - Common Scenarios
7.8
Noise Isolation - Common Scenarios Graph
Airplane Noise Attenuation
-17.90 dB
Airplane Noise Isolation Audio
Office Noise Attenuation
-18.67 dB
Office Noise Isolation Audio
Street Noise Attenuation
-20.02 dB
Street Noise Isolation Audio
Noise Isolation - Voice Handling
Female Voice 1
Male Voice 1
Female Voice 2
Male Voice 2
Leakage
9.6
8.6
Leakage Audio
Overall Leakage @ 1ft
23.61 dB
29.49 dB
Microphone
Microphone Style
Integrated
Yes
Yes
In-Line
No
No
Boom
No
No
Detachable Boom
No
No
Mic
Yes
Yes
Recording Quality
5.4
7.7
Microphone Frequency Response
Recorded Speech
LFE
334.17 Hz
226.27 Hz
FR Std. Dev.
4 dB
3.36 dB
HFE
2,248 Hz
7,136.96 Hz
Weighted THD
10.521
0.42
Gain
20.22 dB
30.82 dB
Noise Handling
7.1
6.3
SpNR
35.42 dB
6.71 dB
Noise Gate
Always On
Always On
Speech + Pink Noise Handling
7.5
6.5
Speech + Pink Noise Audio Sample
Speech + Subway Noise Handling
6.5
6.0
Speech + Subway Noise Audio Sample
Active Features
Battery
7.2
7.1
Battery Type
Rechargable
Rechargable
Continuous Battery Life
6.6 hrs
5.5 hrs
Additional Charges
2.0
3.4
Total Battery Life
19.8 hrs
24.2 hrs
Charge Time
1.1 hrs
1 hrs
Power-Saving Feature
Auto-Off Timer
Auto-Off Timer and Standby Mode
Audio While Charging
Yes
Yes
Passive Playback
No
No
Charging Port
USB-C
USB-C
App Support
7.5
8.0
App Picture
App Name
Sennheiser Smart Control
Sennheiser Smart Control
iOS
Yes
Yes
Android
Yes
Yes
macOS
No
No
Windows
No
No
Equalizer
Graphic + Presets
Graphic + Presets
ANC Control
No
Presets
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
Latency - USB
N/A
N/A
Recorded Latency
N/A
Recorded Latency Connection
No Wired Audio
Bluetooth Connection
7.0
7.5
Bluetooth Version
5.2
5.3
Multi-Device Pairing
No
2 Devices
NFC Pairing
No
Quick Pair (Android)
No
Quick Pair (iOS)
No
Line Of Sight Range
226.38 ft (69.00 m)
318.24 ft (97.00 m)
Latency - SBC
377 ms
272 ms
Latency - aptX
321 ms
267 ms
Latency - aptX Adaptive (High Quality)
371 ms
Latency - aptX Adaptive (Low Latency)
94 ms
Latency - LDAC
N/A
Recorded Latency
Recorded Latency Codec
aptX Adaptive (Low Latency)
AAC Support
Yes
PC Latency (aptX HD)
N/A
PC Latency (aptX-LL)
N/A
iOS Latency
36 ms
Android Latency
23 ms
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
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
CX
SEE PRICE
Amazon.comBlack
MOMENTUM Sport
SEE PRICE
Amazon.comWhite
CX
SEE PRICE
Amazon.comGraphite
MOMENTUM Sport
SEARCH
Amazon.comOlive
MOMENTUM Sport
SEE PRICE
Amazon.com
Sennheiser CX True Wireless
Sennheiser MOMENTUM Sport True Wireless
Comments
Sennheiser CX True Wireless vs Sennheiser MOMENTUM Sport: Main Discussion
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