Products
Anker Soundcore Space A40 Truly Wireless
CMF Buds Pro 2
Tested using Methodology v2.0
Updated Nov 05, 2025 09:23 PM
SEE PRICE
Amazon.com
Tested using Methodology v2.0
Updated Nov 19, 2025 09:30 PM
SEE PRICE
Amazon.com
TypeIn-ear
Noise CancellingYes
EnclosureClosed-Back
Bass Amount
Slightly Emphasized (1 dB)
WirelessTruly Wireless
TransducerDynamic
Treble Amount
Underemphasized (-5 dB)
MicYes
Sound Signature
Warm
TypeIn-ear
Noise CancellingYes
EnclosureClosed-Back
Bass Amount
Very Emphasized (8 dB)
WirelessTruly Wireless
TransducerDynamic
Treble Amount
Slightly Underemphasized (-3 dB)
MicYes
Sound Signature
Boosted Bass
Our Verdict
Anker Soundcore Space A40 Truly Wireless
CMF Buds Pro 2
There are good reasons to pick either the Anker Soundcore Space A40 Truly Wireless or the CMF Buds Pro 2. The primary reasons to choose the Anker are for the longer-lasting, continuous battery life and slightly better noise isolation. Meanwhile, the CMF are a bit more refined in design with a more stable fit, dustproofing, and a better microphone. Of course, your tastes will weigh in even with the presence of an EQ, because you might prefer the Anker's flat tuning or the CMF's more bassy sound profile.
Variants
- Soundcore Space A40 (Black)
- Soundcore Space A40 (Blue)
- Soundcore Space A40 (White)
- Buds Pro 2 (Blue)
- Buds Pro 2 (Dark Grey)
- Buds Pro 2 (Light Grey)
- Buds Pro 2 (Orange)
Check Price
Blue
Soundcore Space A40
SEE PRICE
Amazon.com
Blue
Buds Pro 2
SEE PRICE
Amazon.com
Black
Soundcore Space A40
SEE PRICE
Amazon.com
Dark Grey
Buds Pro 2
SEE PRICE
Amazon.com
White
Soundcore Space A40
SEE PRICE
Amazon.com
Light Grey
Buds Pro 2
SEE PRICE
Amazon.com
Orange
Buds Pro 2
SEE PRICE
Amazon.com
Main Differences for
Sports And Fitness
Sports And Fitness
Threshold
Sports And Fitness
7.6
7.9
Stability
7.0
7.5
Comfort
7.5
7.0
Full Comparison
Sound
Sound Profile
Sound Profile
Normalization Frequency
600 Hz
500 Hz
Bass Amount
Slightly Emphasized (1 dB)
Very Emphasized (8 dB)
Treble Amount
Underemphasized (-5 dB)
Slightly Underemphasized (-3 dB)
Sound Signature
Warm
Boosted Bass
Frequency Response Consistency
5.3
9.0
Consistency L
Consistency R
Std. Deviation
1.66 dB
0.45 dB
Bass Profile: Target Compliance
9.7
6.2
Bass Profile: Target Compliance
RMS Deviation From Target
1.5 dB
8.6 dB
Low-Frequency Extension
20 Hz
20 Hz
Low Bass
0.19 dB
9.39 dB
Mid Bass
1.91 dB
9.27 dB
High Bass
1.84 dB
6.32 dB
Mid-Range Profile: Target Compliance
9.4
8.4
Mid-Range Profile: Target Compliance
RMS Deviation From Target
0.99 dB
2.11 dB
Low Mid
1.07 dB
2.98 dB
Mid-Mid
-0.26 dB
-0.42 dB
High Mid
-1.04 dB
-0.95 dB
Treble Profile: Target Compliance
5.9
6.9
Treble Profile: Target Compliance
RMS Deviation From Target
5.33 dB
4.33 dB
Low Treble
-5.65 dB
-5.17 dB
Mid Treble
-3.63 dB
-0.55 dB
High Treble
-17.86 dB
-5.88 dB
Peaks/Dips
6.5
8.1
Peaks/Dips Graph
Peaks
1.76 dB
1.02 dB
Dips
3.84 dB
1.78 dB
Stereo Mismatch
9.4
7.6
Frequency Response Mismatch
Phase Response Mismatch
Weighted Amplitude Mismatch
0.01 dB
0.45 dB
Weighted Frequency Response Mismatch
0.59 dB
0.71 dB
Weighted Phase Mismatch
0.6°
2.0°
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
9.5
9.0
Harmonics Levels
THD Ratio
WHD @ 94 dB SPL
0.05%
0.09%
WHD @ 104 dB SPL
0.11%
0.19%
Electrical Aspects
Impedance
Sensitivity @1kHz-1V
N/A
N/A
Bluetooth Max SPL
101.0 dB
108.0 dB
Virtual Soundstage
0.0
2.0
Virtual Soundstage
Head Modeling
No
No
Speaker Modeling
No
On/Off
Room Ambience
No
No
Head Tracking
No
No
Virtual Surround
No
Spatial Audio
Test Settings
Firmware
4.19
0.0.8.1
Power
On
On
Connection
Bluetooth
Bluetooth
Codec
SBC, 16-bit, 48kHz
SBC, 16-bit, 48kHz
Test Instrument
Audio Precision APx517B
Audio Precision APx517B
EQ
Soundcore Signature
Dirac Opteo
ANC
Adaptive ANC
High
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
0.02 lbs
0.02 lbs
Clamping Force
0 lbs
0 lbs
Controls
7.6
7.6
Controls Picture
OS Compatibility
Not OS specific
Not OS specific
Ease Of Use
Decent
Decent
Feedback
Good
Good
Call/Music Control
Yes
Yes
Volume Control
Yes
Yes
Microphone Control
No
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
9.4
9.5
Portability Picture
L
1.2" (3.1 cm)
1.3" (3.4 cm)
W
1.2" (3.1 cm)
1.1" (2.7 cm)
H
1.1" (2.9 cm)
0.8" (2.1 cm)
Volume
1.73 in³ (28.30 cm³)
1.18 in³ (19.28 cm³)
Transmitter Required
No
No
Case
7.5
7.5
Case Picture
Type
Hard case
Hard case
L
1.7" (4.4 cm)
2.1" (5.4 cm)
W
2.7" (6.8 cm)
2.1" (5.4 cm)
H
1.1" (2.9 cm)
0.9" (2.3 cm)
Volume
5.16 in³ (84.50 cm³)
4.09 in³ (67.07 cm³)
Build Quality
7.5
7.5
Build Quality Picture
Stability
7.0
7.5
Stability Picture
Headshots 1
Angled Picture
Side Picture
Headshots 2
Front Picture
Rear Picture
Top
Top Picture
In The Box
In The Box Picture
Isolation
Noise Isolation - Full Range
8.9
7.9
Noise Isolation - Full Range Graph
Noise Cancelling
Yes
Yes
Overall Attenuation
-23.54 dB
-20.56 dB
Bass
-21.44 dB
-19.75 dB
Mid
-23.02 dB
-21.56 dB
Treble
-26.69 dB
-20.44 dB
Noise Isolation - Common Scenarios
8.7
8.5
Noise Isolation - Common Scenarios Graph
Airplane Noise Attenuation
-19.54 dB
-20.35 dB
Airplane Noise Isolation Audio
Office Noise Attenuation
-20.97 dB
-18.91 dB
Office Noise Isolation Audio
Street Noise Attenuation
-21.16 dB
-21.92 dB
Street Noise Isolation Audio
Noise Isolation - Voice Handling
Female Voice 1
Male Voice 1
Female Voice 2
Male Voice 2
Leakage
8.8
8.5
Leakage
Leakage Audio
Overall Leakage @ 1ft
28.66 dB
30.57 dB
Microphone
Microphone Style
Integrated
Yes
Yes
In-Line
No
No
Boom
No
No
Detachable Boom
No
No
Mic
Yes
Yes
Recording Quality
4.3
6.0
Microphone Frequency Response
Recorded Speech
LFE
177.02 Hz
570.18 Hz
FR Std. Dev.
9.66 dB
4.1 dB
HFE
7,452.94 Hz
6,001.45 Hz
Weighted THD
9,287.024
0.381
Gain
-16.02 dB
-23.77 dB
Noise Handling
7.0
7.4
SpNR
SpNR
16.55 dB
20.04 dB
Noise Gate
Always On
Always On
Speech + Pink Noise Handling
7.0
7.0
Speech + Pink Noise Audio Sample
Speech + Subway Noise Handling
7.0
8.0
Speech + Subway Noise Audio Sample
Active Features
Battery
7.7
7.1
Battery Type
Rechargable
Rechargable
Continuous Battery Life
8.1 hrs
6.5 hrs
Additional Charges
4.0
3.0
Total Battery Life
40.5 hrs
26 hrs
Charge Time
0.8 hrs
0.75 hrs
Power-Saving Feature
Auto-Off Timer
Standby mode
Audio While Charging
Yes
Yes
Passive Playback
No
No
Charging Port
USB-C
USB-C
App Support
8.0
7.5
App Picture
App Name
Anker Soundcore
Nothing X
iOS
Yes
Yes
Android
Yes
Yes
macOS
No
No
Windows
No
No
Equalizer
Graphic + Presets
Graphic + Presets
ANC Control
On/Off
Presets
Mic Control
No
No
Room Effects
No
No
Playback Control
No
No
Button Mapping
Yes
Yes
Surround Support
No
Yes
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
8.4
8.9
Bluetooth Version
5.2
5.3
Multi-Device Pairing
2 Devices
2 Devices
Quick Pair (Android)
No
Yes
Quick Pair (iOS)
No
No
Line Of Sight Range
279.86 ft (85.30 m)
334.65 ft (102.00 m)
Latency - SBC
188 ms
194 ms
Latency - aptX
N/A
N/A
Latency - aptX Adaptive (High Quality)
N/A
N/A
Latency - aptX Adaptive (Low Latency)
N/A
N/A
Latency - LDAC
381 ms
287 ms
Recorded Latency
Recorded Latency Codec
LDAC
SBC
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
Blue
Soundcore Space A40
SEE PRICE
Amazon.com
Blue
Buds Pro 2
SEE PRICE
Amazon.com
Black
Soundcore Space A40
SEE PRICE
Amazon.com
Dark Grey
Buds Pro 2
SEE PRICE
Amazon.com
White
Soundcore Space A40
SEE PRICE
Amazon.com
Light Grey
Buds Pro 2
SEE PRICE
Amazon.com
Orange
Buds Pro 2
SEE PRICE
Amazon.com
To access
and
Become an Insider
unlimited full product reviews,
product prices
other exclusive site features
Anker Soundcore Space A40 Truly Wireless
CMF Buds Pro 2
Comments
Anker Soundcore Space A40 Truly Wireless vs CMF Buds Pro 2: Main Discussion
What do you think of these products? Let us know below.
Looking for a personalized buying advice from the RTINGS.com experts? Insiders have direct access to buying advice on our insider forum.