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  1. Home
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Samsung U Flex vs Sony WI-C400 Wireless

Which Headphones Are Better?

    Top
    Main Differences
    Design
      StyleComfortControlsBreathabilityPortabilityCaseBuild QualityStabilityHeadshots 1Headshots 2TopIn The Box
    Sound
      Sound ProfileFrequency Response ConsistencyRaw Frequency ResponseBass AccuracyMid AccuracyTreble AccuracyPeaks/DipsImagingPassive SoundstageVirtual SoundstageWeighted Harmonic DistortionTest Settings
    Isolation
      Noise IsolationLeakage
    Microphone
      Microphone StyleRecording QualityNoise Handling
    Active Features
      BatteryApp Support
    Connectivity
      BluetoothNon-Bluetooth WirelessWiredPC / PS4 CompatibilityXbox One CompatibilityBase/Dock
    Comments

Products

Samsung U Flex Wireless
Sony WI-C400 Wireless

Tested using Methodology v1.3.1

Updated Apr 21, 2025 04:49 PM

SEE PRICE
Amazon.com

Tested using Methodology v1.4

Updated Apr 21, 2025 04:49 PM

SEE PRICE
Amazon.com
Samsung U Flex Wireless Picture

Track

Sony WI-C400 Wireless Picture

Track

TypeIn-ear
EnclosureClosed-Back
Noise CancellingNo
WirelessYes
TransducerDynamic
MicYes
TypeIn-ear
EnclosureClosed-Back
Noise CancellingNo
WirelessYes
TransducerDynamic
MicYes

Our Verdict

Samsung U Flex Wireless

Sony WI-C400 Wireless

The Samsung U Flex Wireless are better headphones than the Sony WI-C400 Wireless. Their sound quality is noticeably better, especially in the bass range, and they offer some customization options if you have a Samsung device as well. While their battery life is slightly shorter, they take less than half the time to charge fully, and you can also use them when charging. They can connect to two devices, have better wireless range, and also lower latency. They also feel more durable and better-built than the Sony WI-C400. The Sonys have NFC compatibility that the U Flex don’t have.

0 

Variants

  • U Flex (Black)
  • U Flex (White)
  • WI-C400 (Black)
  • WI-C400 (Blue)

Review

See Samsung U Flex Wireless Review
See Sony WI-C400 Wireless Review
0 
0 

Check Price

Black
U Flex
SEE PRICE
Amazon.com
Black
WI-C400
SEE PRICE
Amazon.com
White
U Flex
SEE PRICE
Amazon.com
White
WI-C400
SEE PRICE
Amazon.com
 
Blue
WI-C400
SEE PRICE
Amazon.com
Read more

Main Differences for
Mixed Usage

Threshold 

0.10

Mixed Usage 
 

0.0
0.0
JOIN NOW  to see main differences

Full Comparison

Design

Style  

Design Picture 2  

Samsung U Flex Wireless Design Picture 2 Sample

SAMPLE

JOIN NOW

for pictures & test results

Sony WI-C400 Wireless Design Picture 2 Sample

SAMPLE

JOIN NOW

for pictures & test results

Type  

Locked
Locked

Enclosure  

Locked
Locked

Wireless  

Locked
Locked

Transducer  

Locked
Locked
Show Text 

Comfort 
 

N/A
N/A

Comfort Picture  

Samsung U Flex Wireless Comfort Picture Sample

SAMPLE

JOIN NOW

for pictures & test results

Sony WI-C400 Wireless Comfort Picture Sample

SAMPLE

JOIN NOW

for pictures & test results

Weight  

Lock lbs
Lock lbs

Clamping Force 
 

Lock lbs
Lock lbs
Show Text 

Controls 
 

N/A
N/A

Controls Picture  

Samsung U Flex Wireless Controls Picture Sample

SAMPLE

JOIN NOW

for pictures & test results

Sony WI-C400 Wireless Controls Picture Sample

SAMPLE

JOIN NOW

for pictures & test results

OS Compatibility 
 

N/A
Locked

Ease Of Use  

Locked
Locked

Feedback  

Locked
Locked

Call/Music Control  

Locked
Locked

Volume Control  

Locked
Locked

Microphone Control  

Locked
Locked

Channel Mixing 
 

N/A
Locked

Noise Cancelling Control  

N/A
Locked

Talk-Through 
 

N/A
Locked

Additional Controls  

Locked
Locked
Show Text 

Breathability 
 

N/A
N/A

Breathability After Picture  

Samsung U Flex Wireless Breathability After Picture Sample

SAMPLE

JOIN NOW

for pictures & test results

Sony WI-C400 Wireless Breathability After Picture Sample

SAMPLE

JOIN NOW

for pictures & test results

Avg.Temp.Difference  

Lock °C
Lock °C
Show Text 

Portability 
 

N/A
N/A

Portability Picture  

Samsung U Flex Wireless Portability Picture Sample

SAMPLE

JOIN NOW

for pictures & test results

Sony WI-C400 Wireless Portability Picture Sample

SAMPLE

JOIN NOW

for pictures & test results

L  

Lock"
Lock"

W  

Lock"
Lock"

H  

Lock"
Lock"

Volume  

Lock in³
Lock in³

Transmitter Required  

N/A
Locked
Show Text 

Case 
 

N/A
N/A

Case Picture  

Samsung U Flex Wireless Case Picture Sample

SAMPLE

JOIN NOW

for pictures & test results

Sony WI-C400 Wireless Case Picture Sample

SAMPLE

JOIN NOW

for pictures & test results

Type  

Locked
Locked

L  

N/A
N/A

W  

N/A
N/A

H  

N/A
N/A

Volume  

N/A
N/A
Show Text 

Build Quality 
 

N/A
N/A

Build Quality Picture  

Samsung U Flex Wireless Build Quality Picture Sample

SAMPLE

JOIN NOW

for pictures & test results

Sony WI-C400 Wireless Build Quality Picture Sample

SAMPLE

JOIN NOW

for pictures & test results

Show Text 

Stability 
 

N/A
N/A

Stability Picture  

Samsung U Flex Wireless Stability Picture Sample

SAMPLE

JOIN NOW

for pictures & test results

Sony WI-C400 Wireless Stability Picture Sample

SAMPLE

JOIN NOW

for pictures & test results

Show Text 

Headshots 1  

Angled Picture  

Samsung U Flex Wireless Angled Picture Sample

SAMPLE

JOIN NOW

for pictures & test results

Sony WI-C400 Wireless Angled Picture Sample

SAMPLE

JOIN NOW

for pictures & test results

Side Picture  

Samsung U Flex Wireless Side Picture Sample

SAMPLE

JOIN NOW

for pictures & test results

Sony WI-C400 Wireless Side Picture Sample

SAMPLE

JOIN NOW

for pictures & test results

Headshots 2  

Front Picture  

Samsung U Flex Wireless Front Picture Sample

SAMPLE

JOIN NOW

for pictures & test results

Sony WI-C400 Wireless Front Picture Sample

SAMPLE

JOIN NOW

for pictures & test results

Rear Picture  

Samsung U Flex Wireless Rear Picture Sample

SAMPLE

JOIN NOW

for pictures & test results

Sony WI-C400 Wireless Rear Picture Sample

SAMPLE

JOIN NOW

for pictures & test results

Top  

Top Picture  

Samsung U Flex Wireless Top Picture Sample

SAMPLE

JOIN NOW

for pictures & test results

Sony WI-C400 Wireless Top Picture Sample

SAMPLE

JOIN NOW

for pictures & test results

In The Box  

In The Box Picture  

Samsung U Flex Wireless In The Box Picture Sample

SAMPLE

JOIN NOW

for pictures & test results

Sony WI-C400 Wireless In The Box Picture Sample

SAMPLE

JOIN NOW

for pictures & test results

Show Text 
Sound

Sound Profile 
 

Frequency Response  

Samsung U Flex Wireless Frequency Response Sample

SAMPLE

JOIN NOW

for pictures & test results

Sony WI-C400 Wireless Frequency Response Sample

SAMPLE

JOIN NOW

for pictures & test results

Frequency Response  

Samsung U Flex Wireless Frequency Response Sample

SAMPLE

JOIN NOW

for pictures & test results

Sony WI-C400 Wireless Frequency Response Sample

SAMPLE

JOIN NOW

for pictures & test results

Bass Amount 
 

Lock dB
Lock dB

Treble Amount 
 

Lock dB
Lock dB

Frequency Response Consistency 
 

N/A
N/A

Consistency L  

Samsung U Flex Wireless Consistency L Sample

SAMPLE

JOIN NOW

for pictures & test results

Sony WI-C400 Wireless Consistency L Sample

SAMPLE

JOIN NOW

for pictures & test results

Consistency R  

Samsung U Flex Wireless Consistency R Sample

SAMPLE

JOIN NOW

for pictures & test results

Sony WI-C400 Wireless Consistency R Sample

SAMPLE

JOIN NOW

for pictures & test results

Avg. Std. Deviation 
 

Lock dB
Lock dB
Show Text 

Raw Frequency Response 
 

Raw FR L  

Samsung U Flex Wireless Raw FR L Sample

SAMPLE

JOIN NOW

for pictures & test results

Sony WI-C400 Wireless Raw FR L Sample

SAMPLE

JOIN NOW

for pictures & test results

Raw FR L  

Samsung U Flex Wireless Raw FR L Sample

SAMPLE

JOIN NOW

for pictures & test results

Sony WI-C400 Wireless Raw FR L Sample

SAMPLE

JOIN NOW

for pictures & test results

Raw FR R  

Samsung U Flex Wireless Raw FR R Sample

SAMPLE

JOIN NOW

for pictures & test results

Sony WI-C400 Wireless Raw FR R Sample

SAMPLE

JOIN NOW

for pictures & test results

Raw FR R  

Samsung U Flex Wireless Raw FR R Sample

SAMPLE

JOIN NOW

for pictures & test results

Sony WI-C400 Wireless Raw FR R Sample

SAMPLE

JOIN NOW

for pictures & test results

Bass Accuracy 
 

N/A
N/A

Bass  

Samsung U Flex Wireless Bass Sample

SAMPLE

JOIN NOW

for pictures & test results

Sony WI-C400 Wireless Bass Sample

SAMPLE

JOIN NOW

for pictures & test results

Bass  

Samsung U Flex Wireless Bass Sample

SAMPLE

JOIN NOW

for pictures & test results

Sony WI-C400 Wireless Bass Sample

SAMPLE

JOIN NOW

for pictures & test results

Std. Err. 
 

Lock dB
Lock dB

Low-Frequency Extension 
 

Lock Hz
Lock Hz

Low-Bass 
 

Lock dB
Lock dB

Mid-Bass 
 

Lock dB
Lock dB

High-Bass 
 

Lock dB
Lock dB
Show Text 

Mid Accuracy 
 

N/A
N/A

Mid  

Samsung U Flex Wireless Mid Sample

SAMPLE

JOIN NOW

for pictures & test results

Sony WI-C400 Wireless Mid Sample

SAMPLE

JOIN NOW

for pictures & test results

Mid  

Samsung U Flex Wireless Mid Sample

SAMPLE

JOIN NOW

for pictures & test results

Sony WI-C400 Wireless Mid Sample

SAMPLE

JOIN NOW

for pictures & test results

Std. Err. 
 

Lock dB
Lock dB

Low-Mid 
 

Lock dB
Lock dB

Mid-Mid 
 

Lock dB
Lock dB

High-Mid 
 

Lock dB
Lock dB
Show Text 

Treble Accuracy 
 

N/A
N/A

Treble  

Samsung U Flex Wireless Treble Sample

SAMPLE

JOIN NOW

for pictures & test results

Sony WI-C400 Wireless Treble Sample

SAMPLE

JOIN NOW

for pictures & test results

Treble  

Samsung U Flex Wireless Treble Sample

SAMPLE

JOIN NOW

for pictures & test results

Sony WI-C400 Wireless Treble Sample

SAMPLE

JOIN NOW

for pictures & test results

Std. Err. 
 

Lock dB
Lock dB

Low-Treble 
 

Lock dB
Lock dB

Mid-Treble 
 

Lock dB
Lock dB

High-Treble 
 

Lock dB
Lock dB
Show Text 

Peaks/Dips 
 

N/A
N/A

Peaks/Dips Graph  

Samsung U Flex Wireless Peaks/Dips Graph Sample

SAMPLE

JOIN NOW

for pictures & test results

Sony WI-C400 Wireless Peaks/Dips Graph Sample

SAMPLE

JOIN NOW

for pictures & test results

Peaks/Dips Graph  

Samsung U Flex Wireless Peaks/Dips Graph Sample

SAMPLE

JOIN NOW

for pictures & test results

Sony WI-C400 Wireless Peaks/Dips Graph Sample

SAMPLE

JOIN NOW

for pictures & test results

Peaks 
 

Lock dB
Lock dB

Dips 
 

Lock dB
Lock dB

Imaging 
 

N/A
N/A

Group Delay  

Samsung U Flex Wireless Group Delay Sample

SAMPLE

JOIN NOW

for pictures & test results

Sony WI-C400 Wireless Group Delay Sample

SAMPLE

JOIN NOW

for pictures & test results

Phase Response  

Samsung U Flex Wireless Phase Response Sample

SAMPLE

JOIN NOW

for pictures & test results

Sony WI-C400 Wireless Phase Response Sample

SAMPLE

JOIN NOW

for pictures & test results

Weighted Group Delay 
 

Lock
Lock

Weighted Amplitude Mismatch 
 

Lock
Lock

Weighted Frequency Mismatch 
 

Lock
Lock

Weighted Phase Mismatch 
 

Lock
Lock
Show Text 

Passive Soundstage 
 

N/A
N/A

PRTF  

Samsung U Flex Wireless PRTF Sample

SAMPLE

JOIN NOW

for pictures & test results

Sony WI-C400 Wireless PRTF Sample

SAMPLE

JOIN NOW

for pictures & test results

PRTF Accuracy (Std. Dev.) 
 

N/A
N/A

PRTF Size (Avg.) 
 

N/A
N/A

PRTF Distance 
 

N/A
N/A

Openness 
 

0.0
0.0

Acoustic Space Excitation 
 

0.0
0.0
Show Text 

Virtual Soundstage 
 

N/A
N/A

Virtual Soundstage  

Samsung U Flex Wireless Virtual Soundstage Sample

SAMPLE

JOIN NOW

for pictures & test results

Sony WI-C400 Wireless Virtual Soundstage Sample

SAMPLE

JOIN NOW

for pictures & test results

Head Modeling 
 

Locked

Speaker Modeling 
 

Locked

Room Ambience 
 

Locked

Head Tracking 
 

Locked

Virtual Surround 
 

Locked

Weighted Harmonic Distortion 
 

N/A
N/A

Weighted Harmonic Distortion  

Samsung U Flex Wireless Weighted Harmonic Distortion Sample

SAMPLE

JOIN NOW

for pictures & test results

Sony WI-C400 Wireless Weighted Harmonic Distortion Sample

SAMPLE

JOIN NOW

for pictures & test results

WHD @ 90 
 

Lock
Lock

WHD @ 100 
 

Lock
Lock

Test Settings 
 

Firmware 
 

Locked

Power 
 

Locked

Connection 
 

Locked

Codec 
 

Locked

EQ 
 

Locked

ANC 
 

Locked

Tip/Pad 
 

Locked

Microphone 
 

Locked
Isolation

Noise Isolation 
 

N/A
N/A

Noise Isolation  

Samsung U Flex Wireless Noise Isolation Sample

SAMPLE

JOIN NOW

for pictures & test results

Sony WI-C400 Wireless Noise Isolation Sample

SAMPLE

JOIN NOW

for pictures & test results

Isolation Audio 
 

JOIN NOW
JOIN NOW

Overall Attenuation 
 

Lock dB
Lock dB

Noise Cancelling  

Locked
Locked

Bass 
 

Lock dB
Lock dB

Mid 
 

Lock dB
Lock dB

Treble 
 

Lock dB
Lock dB
Show Text 

Leakage 
 

N/A
N/A

Leakage  

Samsung U Flex Wireless Leakage Sample

SAMPLE

JOIN NOW

for pictures & test results

Sony WI-C400 Wireless Leakage Sample

SAMPLE

JOIN NOW

for pictures & test results

Leakage Audio 
 

JOIN NOW
JOIN NOW

Overall Leakage @ 1ft 
 

Lock dB
Lock dB
Show Text 
Microphone

Microphone Style 
 

Integrated 
 

Locked
Locked

In-Line 
 

Locked
Locked

Boom 
 

Locked
Locked

Detachable Boom 
 

N/A
Locked

Mic  

Locked
Locked
Show Text 

Recording Quality 
 

N/A
N/A

Microphone Frequency Response  

Samsung U Flex Wireless Microphone Frequency Response Sample

SAMPLE

JOIN NOW

for pictures & test results

Sony WI-C400 Wireless Microphone Frequency Response Sample

SAMPLE

JOIN NOW

for pictures & test results

Recorded Speech 
 

JOIN NOW
JOIN NOW

LFE 
 

Lock Hz
Lock Hz

FR Std. Dev. 
 

Lock dB
Lock dB

HFE 
 

Lock Hz
Lock Hz

Weighted THD 
 

Lock
Lock

Gain 
 

Lock dB
Lock dB
Show Text 

Noise Handling 
 

N/A
N/A

SpNR  

Samsung U Flex Wireless SpNR Sample

SAMPLE

JOIN NOW

for pictures & test results

Sony WI-C400 Wireless SpNR Sample

SAMPLE

JOIN NOW

for pictures & test results

Speech + Pink Noise  

JOIN NOW
JOIN NOW

Speech + Subway Noise  

JOIN NOW
JOIN NOW

SpNR 
 

Lock dB
Lock dB
Show Text 
Active Features

Battery 
 

N/A
N/A

Battery Type 
 

Locked
Locked

Continuous Battery Life 
 

Lock hrs
Lock hrs

Additional Charges 
 

Lock
Lock

Total Battery Life 
 

Lock hrs
Lock hrs

Charge Time 
 

Lock hrs
Lock hrs

Power-Saving Feature 
 

Locked
Locked

Audio While Charging 
 

Locked
Locked

Passive Playback 
 

Locked
Locked

Charging Port  

Locked
Locked
Show Text 

App Support 
 

N/A
N/A

App Picture  

Samsung U Flex Wireless App Picture Sample

SAMPLE

JOIN NOW

for pictures & test results

Sony WI-C400 Wireless App Picture Sample

SAMPLE

JOIN NOW

for pictures & test results

App Name  

Locked
Locked

iOS  

Locked
Locked

Android  

Locked
Locked

macOS  

N/A
Locked

Windows  

N/A
Locked

Equalizer 
 

Locked
Locked

ANC Control 
 

Locked
Locked

Mic Control  

Locked
Locked

Room Effects 
 

Locked
Locked

Playback Control 
 

Locked
Locked

Button Mapping  

Locked
Locked

Surround Sound  

N/A

Surround Support 
 

Locked
Show Text 
Connectivity

Bluetooth 
 

N/A
N/A

Bluetooth Version 
 

Locked
Locked

Multi-Device Pairing 
 

Locked
Locked

NFC Pairing 
 

Locked
Locked

Line Of Sight Range 
 

Lock ft
Lock ft

PC Latency (SBC) 
 

Lock ms
Lock ms

PC Latency (aptX) 
 

N/A
N/A

PC Latency (aptX HD) 
 

N/A

PC Latency (aptX-LL) 
 

N/A
N/A

iOS Latency 
 

Lock ms

Android Latency 
 

Lock ms
Show Text 

Non-Bluetooth Wireless 
 

N/A
N/A

Non-BT Line Of Sight Range 
 

N/A
N/A

Non-BT Latency 
 

N/A
N/A

Wired 
 

N/A
N/A

Cable Picture  

Samsung U Flex Wireless Cable Picture Sample

SAMPLE

JOIN NOW

for pictures & test results

Sony WI-C400 Wireless Cable Picture Sample

SAMPLE

JOIN NOW

for pictures & test results

Analog Audio 
 

N/A
Locked

USB Audio 
 

N/A
Locked

Detachable  

Locked
Locked

Length  

N/A
N/A

Connection  

N/A
Locked

Wired Latency 
 

N/A

Analog/USB Audio Latency 
 

N/A
Show Text 

PC / PS4 Compatibility 
 

PC/PS4 Analog 
 

Locked
Locked

PC/PS4 Wired USB 
 

Locked
Locked

PC/PS4 Non-BT Wireless 
 

Locked
Locked

Xbox One Compatibility 
 

Xbox One Analog 
 

Locked
Locked

Xbox One Wired USB 
 

Locked
Locked

Xbox One Non-BT Wireless 
 

Locked
Locked

Base/Dock 
 

N/A
N/A

Type 
 

N/A
Locked

USB Input 
 

N/A
Locked

Line In 
 

N/A
Locked

Line Out 
 

N/A
Locked

Optical Input 
 

N/A
Locked

RCA Input 
 

N/A
Locked

Dock Charging 
 

N/A
Locked

Power Supply 
 

N/A
Locked
Show Text 

Check Price

Black
U Flex
SEE PRICE
Amazon.com
Black
WI-C400
SEE PRICE
Amazon.com
White
U Flex
SEE PRICE
Amazon.com
White
WI-C400
SEE PRICE
Amazon.com
 
Blue
WI-C400
SEE PRICE
Amazon.com
Back to Top

Samsung U Flex Wireless

Sony WI-C400 Wireless

Comments

  1. Comparison
 • Posted 3 years ago

Samsung U Flex Wireless vs Sony WI-C400 Wireless: Main Discussion

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