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- Table of Contents
- Top
- Main Differences
- Design
- Sound
- Isolation
- Microphone
- Active Features
- Connectivity
- Comments
Sony WI-XB400 EXTRA BASS Wireless vs Beats Flex Wireless
Side-by-Side Comparison
Products
Sony WI-XB400 EXTRA BASS Wireless
Beats Flex Wireless
Tested using Methodology v1.5
Updated Jan 16, 2024 02:41 PM
SEE PRICE
Amazon.comTested using Methodology v1.5
Updated Apr 21, 2025 04:22 PM
SEE PRICE
Amazon.com
TypeIn-ear
EnclosureClosed-Back
WirelessYes
TransducerDynamic
Noise CancellingNo
MicYes
TypeIn-ear
EnclosureClosed-Back
WirelessYes
TransducerDynamic
Noise CancellingNo
MicYes
Variants
- WI-XB400 EXTRA BASS (Black)
- WI-XB400 EXTRA BASS (Blue)
- Flex (Black)
- Flex (Flame Blue)
- Flex (Girls Don’t Cry)
- Flex (Smoke Gray)
- Flex (Yuzu Yellow)
- Flex (fragment design Black)
Our Verdict
Sony WI-XB400 EXTRA BASS Wireless
Beats Flex Wireless
The Beats Flex Wireless and the Sony WI-XB400 EXTRA BASS Wireless perform similarly. The Beats are more comfortable, stable, and have a better build quality. They also isolate more noise and pair seamlessly with Apple devices. However, the Sony headphones have a better-balanced sound profile, which some users may prefer, and a longer continuous battery life of 19.5 hours.
Check Price
Black
WI-XB400 EXTRA BASS
Searching
Finding storeBlack
Flex
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Finding storeBlue
WI-XB400 EXTRA BASS
Searching
Finding storeFlame Blue
Flex
Searching
Finding storeGirls Don’t Cry
Flex
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Finding storeSmoke Gray
Flex
Searching
Finding storeYuzu Yellow
Flex
Searching
Finding storefragment design Black
Flex
Searching
Finding storeMain Differences forNeutral Sound
Neutral Sound
Threshold
Neutral Sound
7.1
6.9
Treble Accuracy
7.7
6.4
Full Comparison
Design
Style
Design Picture 2
Type
In-ear
In-ear
Enclosure
Closed-Back
Closed-Back
Wireless
Yes
Yes
Transducer
Dynamic
Dynamic
Comfort
7.0
7.5
Comfort Picture
Weight
0.05 lbs
0.04 lbs
Clamping Force
0 lbs
0 lbs
Controls
6.5
6.8
Controls Picture
OS Compatibility
Not OS specific
Not OS specific
Ease Of Use
Good
Good
Feedback
Okay
Good
Call/Music Control
Yes
Yes
Volume Control
Yes
Yes
Microphone Control
No
No
Channel Mixing
No
No
Noise Cancelling Control
No
No
Talk-Through
No
No
Additional Controls
Voice Assistant
Voice Assistant
Breathability
9.2
9.2
Breathability After Picture
Avg.Temp.Difference
0.8 °C
0.8 °C
Portability
9.1
9.4
Portability Picture
L
3.0" (7.6 cm)
3.7" (9.4 cm)
W
1.5" (3.8 cm)
1.2" (3.0 cm)
H
0.7" (1.8 cm)
0.4" (1.0 cm)
Volume
3.20 in³ (52.44 cm³)
1.80 in³ (29.50 cm³)
Transmitter Required
No
No
Case
0.0
0.0
Case Picture
Type
No case
No case
L
N/A
N/A
W
N/A
N/A
H
N/A
N/A
Volume
N/A
N/A
Build Quality
6.5
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
Sound
Sound Profile
Frequency Response
Bass Amount
3.28 dB
2.91 dB
Treble Amount
-3.15 dB
-3.39 dB
Frequency Response Consistency
9.4
9.1
Consistency L
Consistency R
Avg. Std. Deviation
0.12 dB
0.19 dB
Raw Frequency Response
Bass Accuracy
7.5
7.6
Std. Err.
3.65 dB
3.56 dB
Low-Frequency Extension
10 Hz
10 Hz
Low-Bass
5.39 dB
4.22 dB
Mid-Bass
3.7 dB
4.36 dB
High-Bass
3.11 dB
3.21 dB
Mid Accuracy
8.9
8.6
Std. Err.
1.43 dB
1.85 dB
Low-Mid
1.73 dB
1.54 dB
Mid-Mid
-0.76 dB
0.29 dB
High-Mid
-0.16 dB
2.2 dB
Treble Accuracy
7.7
6.4
Std. Err.
3.49 dB
5.2 dB
Low-Treble
0.01 dB
-4.19 dB
Mid-Treble
-2.51 dB
-3.9 dB
High-Treble
-10.98 dB
-3.66 dB
Peaks/Dips
8.1
7.9
Peaks/Dips Graph
Peaks
1.22 dB
1.18 dB
Dips
0.93 dB
1.58 dB
Imaging
9.0
9.5
Phase Response Mismatch
Weighted Group Delay
0.14
0.13
Weighted Phase Mismatch
1.92
0.8
Weighted Amplitude Mismatch
0.67
0.17
Weighted Frequency Mismatch
1.25
0.76
Passive Soundstage
1.3
0.8
PRTF
PRTF Accuracy (Std. Dev.)
N/A
N/A
PRTF Size (Avg.)
N/A
N/A
PRTF Distance
N/A
N/A
Openness
4.1
2.9
Acoustic Space Excitation
1.5
0.7
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 App
No
Weighted Harmonic Distortion
7.2
7.8
Weighted Harmonic Distortion
WHD @ 90
0.430
0.189
WHD @ 100
0.215
0.139
Test Settings
Firmware
Unknown
3.7.2
Power
On
On
Connection
Bluetooth 4.2
Bluetooth 5.0
Codec
SBC, 16-bit, 48kHz
SBC, 16-bit, 48kHz
EQ
No EQ
No EQ
ANC
No ANC
No ANC
Tip/Pad
Silicone (small)
Silicone (small)
Microphone
In-line
Integrated
Isolation
Noise Isolation
5.7
7.1
Noise Isolation
Isolation Audio
Overall Attenuation
-13.54 dB
-20.76 dB
Noise Cancelling
No
No
Bass
-4.88 dB
-10.18 dB
Mid
-17.97 dB
-15.42 dB
Treble
-19.27 dB
-36.94 dB
Leakage
8.6
9.4
Leakage Audio
Overall Leakage @ 1ft
29.46 dB
24.73 dB
Microphone
Microphone Style
Integrated
No
Yes
In-Line
Yes
No
Boom
No
No
Detachable Boom
No
No
Mic
Yes
Yes
Recording Quality
6.3
6.1
Microphone Frequency Response
Recorded Speech
LFE
507.97 Hz
459.13 Hz
FR Std. Dev.
2.84 dB
1.67 dB
HFE
7,452.94 Hz
3,272.31 Hz
Weighted THD
1.6
10.161
Gain
4.47 dB
23.28 dB
Noise Handling
7.5
5.0
SpNR
14.21 dB
15.03 dB
Noise Gate
No
No
Speech + Pink Noise Handling
7.5
5.0
Speech + Pink Noise Audio Sample
Speech + Subway Noise Handling
7.5
5.0
Speech + Subway Noise Audio Sample
Active Features
Battery
6.8
6.2
Battery Type
Rechargable
Rechargable
Continuous Battery Life
19.5 hrs
11 hrs
Additional Charges
0.0
0.0
Total Battery Life
19.5 hrs
11 hrs
Charge Time
2.7 hrs
1.2 hrs
Power-Saving Feature
No
No
Audio While Charging
No
No
Passive Playback
No
No
Charging Port
USB-C
USB-C
App Support
0.0
5.0
App Picture
App Name
No App
Beats
iOS
No
Yes
Android
No
Yes
macOS
No
No
Windows
No
No
Equalizer
No
No
ANC Control
No
No
Mic Control
No
No
Room Effects
No
No
Playback Control
No
No
Button Mapping
No
No
Surround Support
No
No
Connectivity
Bluetooth
6.9
7.3
Bluetooth Version
5.0
5.0+W1 chip
Multi-Device Pairing
No
No
NFC Pairing
No
No
Line Of Sight Range
221.00 ft (67.36 m)
305.00 ft (92.96 m)
PC Latency (SBC)
209 ms
173 ms
PC Latency (aptX)
N/A
N/A
PC Latency (aptX HD)
N/A
N/A
PC Latency (aptX-LL)
N/A
N/A
iOS Latency
102 ms
30 ms
Android Latency
165 ms
96 ms
Non-Bluetooth Wireless
0.0
0.0
Non-BT Line Of Sight Range
N/A
N/A
Non-BT Latency
N/A
N/A
Wired
0.0
0.0
Cable Picture
Analog Audio
No
No
USB Audio
No
No
Detachable
No
No
Length
N/A
N/A
Connection
No Wired Option
No Wired Option
Analog/USB Audio 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
0.0
0.0
Type
No Base/Dock
No Base/Dock
USB Input
No
No
Line In
No
No
Line Out
No
No
Optical Input
No
No
RCA Input
No
No
Dock Charging
No
No
Power Supply
No Base/Dock
No Base/Dock
Check Price
Black
WI-XB400 EXTRA BASS
Searching
Finding storeBlack
Flex
Searching
Finding storeBlue
WI-XB400 EXTRA BASS
Searching
Finding storeFlame Blue
Flex
Searching
Finding storeGirls Don’t Cry
Flex
Searching
Finding storeSmoke Gray
Flex
Searching
Finding storeYuzu Yellow
Flex
Searching
Finding storefragment design Black
Flex
Searching
Finding store
Sony WI-XB400 EXTRA BASS Wireless
Beats Flex Wireless
Comments
Sony WI-XB400 EXTRA BASS Wireless vs Beats Flex Wireless: Main Discussion
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