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Sony MDR-XB50AP Extra Bass  Headphones Review

Review updated May 22, 2018 at 04:45 pm
Sony MDR-XB50AP Extra Bass
6.4
Neutral Sound 
5.5
Commute/Travel 
6.5
Sports/Fitness 
6.0
Office 
4.7
Wireless Gaming 
6.7
Wired Gaming 
6.5
Phone Calls 
Tested using methodology v1.5 
 0
The Sony MDR-XB50AP Extra Bass are average mixed usage in-ears with an emphasis on bass. They're portable, stable and block an above-average amount of noise which makes them a decent choice for commuting. Unfortunately, they aren't the most balanced-sounding headphones. They should be okay for casual listening but the excess bass won't be ideal for more critical listeners. They're also not as stable as some of the other in-ears and have a limited control scheme.

Our Verdict

6.4
Neutral Sound 

Mediocre for neutral listening. The small and closed-back in-ear design means they won't have the most spacious soundstage. That combined with their poorly balanced sound that favors bass over instruments and vocals make them sound cluttered, muddy and a bit boxy which may be somewhat okay for casual listening but won't be ideal for more neutral listeners.

Pros
None
Cons
None
5.5
Commute/Travel 

Decent for commuting. The Sony MDR-XB50AP Extra Bass are lightweight, ultra-portable headphones that passively block a lot of noise. They won't be the best in very loud environments, but they can handle the level of most commutes, especially if you're listening to music at moderately high volumes.

Pros
None
Cons
None
6.5
Sports/Fitness 

Above-average for sports use. Although they're not as stable as some of the other in-ears, they're compact lightweight and decently comfortable. However, they do not have the best control scheme, and since they're wired, they might get yanked out of your ears relatively easily if the cable gets hooked by something.

Pros
None
Cons
None
6.0
Office 

Average for office use. They prevent a fair bit of noise from entering your audio. They also barely leak so they won't distract your colleagues in quieter environments.

Pros
None
Cons
None
4.7
Wireless Gaming 

Average for gaming. They have a wired connection, so they have negligible latency which is suitable for gaming. They also have a decent microphone that's compatible with consoles and PCs. Unfortunately, they sound overly bass-heavy and lack a good app to customize their sound profile like most gaming headsets. Their in-ear fit also won't be as comfortable for all listeners, especially during long gaming sessions.

6.7
Wired Gaming 

Pros
None
Cons
None
6.5
Phone Calls 

Pros
None
Cons
None
  • 6.4
    Neutral Sound
  • 5.5
    Commute/Travel
  • 6.5
    Sports/Fitness
  • 6.0
    Office
  • 4.7
    Wireless Gaming
  • 6.7
    Wired Gaming
  • 6.5
    Phone Calls
  • Changelog

    1.  Updated Nov 04, 2021: Converted to Test Bench 1.5.
    2.  Updated Feb 17, 2020: Converted to Test Bench 1.4.
    3.  Updated Nov 21, 2019: Converted to Test Bench 1.3.1.
    4.  Updated Nov 21, 2019: Converted to Test Bench 1.3.

    Compared To Other Headphones

    The Sony MDR-XB50AP are a decently versatile wired in-ear. They do not have the best sound quality and may a bit too bass-heavy for critical listening. But on the upside, they block enough noise to be suitable for commuting and they will easily fit into your pockets so you can have them on you at all times. They're also sufficiently stable for sports and working out although they won't be as good as some of the competing in-ear models below. See our recommendations for the best earbuds and in-ears, the best earbuds under $50, and the best cheap earbuds.

    1More Triple Driver

    The 1More Triple Driver are slightly better wired in-ear headphones than the Sony MDR-XB50AP Extra Bass. The 1More are a bit more comfortable, have a better in-line remote that's easier to use, and come with a much nicer carrying case. They also have a better-balanced sound profile that still has a good amount of bass, but isn't nearly as bass-heavy and boomy as the Sony. If you use your headphones while taking calls, the mic on the 1More also has a better recording quality, though they both sound good. Other than that, the Sony block more background noise, and some people may like their very bass-heavy sound profile, especially if you listen to a lot of music that isn't vocal-centric or instrument-driven, like EDM or dubstep.

    Logitech G333

    The Logitech G333 are better headphones for most purposes than the Sony MDR-XB50AP Extra Bass. The Logitech have a much more comfortable fit and a better build quality. Their in-line controls offer more functionality and better feedback, and they have an in-line mic with significantly better recording quality. On the other hand, the Samsung are slightly more compact and leak much less sound. They also do a somewhat better job of passively isolating you from noises like background conversations.

    Apple EarPods

    The Sony MDR-XB50AP Extra Bass are more versatile headphones than the Apple EarPods. They have a closed-back design that isolates more ambient noise and makes them more suitable for commuting. As their name suggests, the Sony have a very bass-heavy sound profile, while the Apple's open-design lack sub-bass, but don't lack detail in the treble range like the Sony do. Also, the Apple are more comfortable, if you can find a good fit. They have a decent in-line remote with volume control, which the Sony don’t have, disappointingly. The Apple have a decent microphone for calls, while the Sony are a more stable option for sports.

    1More Piston Fit

    The Sony MDR-XB50AP Extra Bass are better headphones than the 1More Piston Fit. They have a more balanced sound, isolate more ambient noise, and barely leak. The Sony also feel more durable than the 1More. On the other hand, the 1More feel more comfortable thanks to their very small and lightweight earbuds, and they have a better microphone for calls.

    Test Results

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    Design
    Style
    TypeIn-ear
    EnclosureClosed-Back
    WirelessNo
    TransducerDynamic

    The MDR-XB50AP are simple and straightforward in-ear headphones. They have a unique and stylish earbud design but the same fit as most in-ears. The cable is decently rubberized which gives a slightly more premium appeal to the headphones. They also come in a couple of flashier color schemes that will stand out more than the all-black variation we've reviewed.

    6.5
    Comfort
    Weight0.04 lbs
    Clamping Force
    0 lbs

    The Sony XB50AP have a typical in-ear fit. They're angled, so they don't enter as deeply into the ear canal, but since the buds are rather large, they're still quite noticeable once in your ears. Unfortunately, they do not have any foam tips which some users prefer.

    4.8
    Controls
    OS Compatibility
    Not OS specific
    Ease Of UseOkay
    FeedbackOkay
    Call/Music ControlYes
    Volume ControlNo
    Microphone ControlNo
    Channel Mixing
    No
    Noise Cancelling ControlNo
    Talk-Through
    No
    Additional ControlsNo

    The MDR-XB50AP Extra Bass have a one-button design that doesn't give you as much control. They only provide track skipping and call/play/pause functionality via the multi-purpose button. Unfortunately, the slightly limited layout does not give you any volume controls, and the one button is not as responsive as some of the other headphones that we've reviewed.

    9.2
    Breathability
    Avg.Temp.Difference0.8 °C

    The XB50AP, like most in-ear/earbud designs, are very breathable headphones. They trap a bit of heat within your ear canal but won't make you sweat more than usual since they do not cover your outer ear. It's a negligible temperature difference even during more intense exercises, which makes them a decent option for sports (see our recommendations for the best sports headphones).

    9.3
    Portability
    L1.6" (4.1 cm)
    W1.6" (4.1 cm)
    H0.9" (2.3 cm)
    Volume2.30 in³ (37.69 cm³)
    Transmitter RequiredNo

    The Sony XB50AP, like most in-ears, are ultra-portable headphones. They will easily fit into most pockets and they're super easy to carry around on your person. Unfortunately, they do not come with a good case.

    5.5
    Case
    TypePouch
    LN/A
    WN/A
    HN/A
    VolumeN/A

    These headphones come with a small pouch that will prevent the headphones from getting tangled with anything else in your bag and pockets but it won't protect them from drops and impacts.

    7.0
    Build Quality

    The MDR-XB50 have an above-average build quality. They have decently rubberized audio cables, and the earbuds feel dense enough that they won't break if you accidentally drop them once or twice. However, the cable is not replaceable, and upon closer inspection, the plastic used for the inline remote and the earbuds look a bit cheap. Also, although the cables are rubberized, they're not very thick.

    6.5
    Stability

    These headphones do not have any stability tips and aren't particularly stable for running or working out. They have a typical in-ear fit and they're lightweight, so they won't easily fall out of your ears in most casual situations. However, they don't enter the ear canal as deeply as some of the other in-ears so if the audio cabled is tugged or hooked on something, the ear buds will easily slip out of your ears.

    Headshots 1
    Headshots 2
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    In The Box

    • Sony MDR-XB50AP Headphones
    • Earbud tips (x4 sizes)
    • Carrying pouch
    • Manual

    Sound
    Sound Profile
    See details on graph tool
    Bass Amount
    2.11 dB
    Treble Amount
    -5.19 dB
    9.7
    Frequency Response Consistency
    See details on graph tool
    See details on graph tool
    Avg. Std. Deviation
    0.07 dB

    The frequency response consistency of the MDR-XB50AP is excellent. If the user is able to achieve a proper fit and an air-tight seal using the assortment of tips that come with the headphones, then they should be able to get consistent bass and treble delivery every time they use the headphones.

    Raw Frequency Response
    See details on graph tool
    See details on graph tool
    7.2
    Bass Accuracy
    See details on graph tool
    Std. Err.
    4.37 dB
    Low-Frequency Extension
    16.11 Hz
    Low-Bass
    0.36 dB
    Mid-Bass
    4.51 dB
    High-Bass
    6.66 dB

    The Sony MDR-XB50AP have a decent bass. LFE (low-frequency extension) is at 13Hz, which is excellent. Low-bass, responsible for the thump and rumble common to bass-heavy genres, is within 1dB of our target, which is great. Mid-bass, responsible for the body of bass guitars and punch of the kick drums is over our neutral target by about 4dB. High-bass, responsible for warmth is overemphasized by more than 7dB. This results in a deep and extended bass that sounds excessively boomy and muddy.

    7.8
    Mid Accuracy
    See details on graph tool
    Std. Err.
    2.93 dB
    Low-Mid
    1.73 dB
    Mid-Mid
    -2.49 dB
    High-Mid
    0.76 dB

    The mid-range performance of the XB50AP is good. Low-mid shows a bit of bump, which is the continuation of the high-bass overemphasis. This thickens vocals a bit and makes mixes sound muddy and cluttered. Mid-mid and high-mid are relatively consistent and within 2dB of our target.

    6.2
    Treble Accuracy
    See details on graph tool
    Std. Err.
    5.46 dB
    Low-Treble
    -5.83 dB
    Mid-Treble
    -2.79 dB
    High-Treble
    -14.81 dB

    These in-ears have an average treble performance. Low-treble is underemphasized by more than 3dB, negatively affecting the detail and presence of vocals and lead instruments. Mid-treble is relatively consistent and balanced but could sound a bit sibilant (sharp on S and Ts) to those with overly sensitive ears.

    6.6
    Peaks/Dips
    See details on graph tool
    Peaks
    2.22 dB
    Dips
    1.85 dB
    7.2
    Imaging
    See details on graph tool
    See details on graph tool
    Weighted Group Delay
    0.19
    Weighted Phase Mismatch
    2.62
    Weighted Amplitude Mismatch
    3.56
    Weighted Frequency Mismatch
    2.66

    The imaging performance of the XB50AP is above-average. The weighted group delay is at 0.19, which is very low. The GD graph also shows that the entire group delay response is below the audibility threshold. This ensures a tight bass and a transparent treble reproduction. Additionally, the L/R drivers of our test unit were very well-matched in frequency and phase response, but we measured more than 3dB of amplitude mismatch. This could noticeably skew the stereo image to one side, which is not ideal for the proper localization of objects (voices, instruments, video game effects), in the stereo field.

    It should be noted that this mismatch could be unique to our test unit and then one you buy may or may not have this issue.

    0.9
    Passive Soundstage
    PRTF Accuracy (Std. Dev.)
    N/A
    PRTF Size (Avg.)
    N/A
    PRTF Distance
    N/A
    Openness
    3.7
    Acoustic Space Excitation
    0.6

    The soundstage is poor. This is because creating an out-of-head and speaker-like soundstage is largely dependent on activating the resonances of the pinna (outer ear). The design of in-ears and earbuds is in such a way that fully bypasses the pinna and doesn't interact with it. Also, because these headphones have a closed-back enclosure, their soundstage won't be perceived to be as open as that of open-back earbuds like the Apple AirPods (1st generation) Truly Wireless, Google Pixel Buds, or the Bose SoundSport Free.

    0.0
    Virtual Soundstage
    Head Modeling
    No
    Speaker Modeling
    No
    Room Ambience
    No
    Head Tracking
    No
    Virtual Surround
    No App
    7.8
    Weighted Harmonic Distortion
    See details on graph tool
    WHD @ 90
    0.257
    WHD @ 100
    0.112
    Test Settings
    Firmware
    No Firmware
    Power
    Passive
    Connection
    Wired
    Codec
    PCM, 24-bit, 48kHz
    EQ
    No EQ
    ANC
    No ANC
    Tip/Pad
    Silicone (small)
    Microphone
    In-line
    Isolation
    5.8
    Noise Isolation
    See details on graph tool
    Isolation Audio
    Overall Attenuation
    -16.92 dB
    Noise CancellingNo
    Bass
    -1.81 dB
    Mid
    -15.28 dB
    Treble
    -34.91 dB

    The MDR-XB50AP has a decent isolation. In the bass range, where the rumble of airplane and bus engines sits, they don't achieve any isolation. In the mid-range, important for blocking out speech, they isolate by more than 15dB, which is good. In the treble range, occupied by sharp sounds like S and Ts, they achieve 35dB of isolation, which is very good.

    9.5
    Leakage
    See details on graph tool
    Leakage Audio
    Overall Leakage @ 1ft
    24.37 dB

    The leakage performance of these headphones, like most in-ears, is excellent. The significant portion of their leakage is between 3KHz and 6KHz, which is a very narrow range. The overall level of the leakage is very quiet too. With the music at 100dB SPL, the leakage at 1 foot away averages at 24dB SPL and peaks at 44dB SPL, which is below the noise floor of most offices.

    Microphone
    Microphone Style
    Integrated
    No
    In-Line
    Yes
    Boom
    No
    Detachable Boom
    No
    MicYes
    6.9
    Recording Quality
    See details on graph tool
    Recorded Speech
    LFE
    486.43 Hz
    FR Std. Dev.
    1.36 dB
    HFE
    4,695.06 Hz
    Weighted THD
    0.398
    Gain
    25.07 dB

    The recording quality of the MDR-XB50AP's in-line microphone is about average. The dip between 100Hz and 500Hz makes recorded or transmitted speech relatively thin sounding. The bump around 20Hz means that this mic may be prone to pops and rumbling noises. The HFE (high-frequency extension) is at 4.7KHz, resulting in a speech that lacks a bit of detail and presence. However, it'll still be decently understandable since speech intelligibility is mostly dependent on the 500Hz-4KHz range.

    6.7
    Noise Handling
    See details on graph tool
    SpNR
    16.9 dB
    Noise Gate
    No
    Speech + Pink Noise Handling
    6.5
    Speech + Pink Noise Audio Sample
    Speech + Subway Noise Handling
    7.0
    Speech + Subway Noise Audio Sample

    The in-line microphone of the MDR-XB50AP is average at noise handling. It achieved a speech-to-noise ratio of 17dB in our SpNR test. This suggests that it's best suited for quiet environments since they will struggle to fully separate speech from background noise in loud and moderately loud places.

    Active Features
    0.0
    Battery
    Battery Type
    No Battery
    Continuous Battery Life
    N/A
    Additional Charges
    N/A
    Total Battery Life
    N/A
    Charge Time
    N/A
    Power-Saving Feature
    No
    Audio While Charging
    No
    Passive Playback
    Passive Headphone
    Charging PortNone

    These are passive earbuds with no active components that need power so they do not have a battery.

    0.0
    App Support
    App NameNo App
    iOSNo
    AndroidNo
    macOSNo
    WindowsNo
    Equalizer
    No
    ANC Control
    No
    Mic ControlNo
    Room Effects
    No
    Playback Control
    No
    Button MappingNo
    Surround Support
    No

    These headphones do not support the bose connect app.

    Connectivity
    0.0
    Bluetooth
    Bluetooth Version
    No Bluetooth
    Multi-Device Pairing
    No
    NFC Pairing
    No
    Line Of Sight Range
    N/A
    PC Latency (SBC)
    N/A
    PC Latency (aptX)
    N/A
    PC Latency (aptX HD)
    N/A
    PC Latency (aptX-LL)
    N/A
    iOS Latency
    N/A
    Android Latency
    N/A

    The in-ears are wired and do not have a Bluetooth connection. See our recommendations for the best sounding wireless earbuds.

    The MDR-XB50, like most wired headsets, have negligible latency (see our recommendations for the best wired headphones). They are a suitable option for gaming and watching movies, but they are limited by the relatively short range of their audio cable.

    0.0
    Non-Bluetooth Wireless
    Non-BT Line Of Sight Range
    N/A
    Non-BT Latency
    N/A
    9.0
    Wired
    Analog Audio
    Yes
    USB Audio
    No
    DetachableNo
    Length4.00 ft (1.22 m)
    Connection
    1/8" TRS
    Analog/USB Audio Latency
    0 ms

    These headphones have a 1/8' TRRS audio cable with an inline remote microphone that's compatible with the PS4 and Xbox one controllers. It will also be microphone and audio compatible with PCs if you have a headset adapter or a 3-pin audio jack like on most tablets, laptops and phones.

    PC Compatibility
    Analog
    Audio + Microphone
    Wired USB
    No
    Non-BT Wireless
    No
    PlayStation Compatibility
    PS4 Analog
    Audio + Microphone
    PS4 Wired USB
    No
    PS4 Non-BT Wireless
    No
    PS5 Analog
    Audio + Microphone
    PS5 Wired USB
    No
    PS5 Non-BT Wireless
    No
    Xbox Compatibility
    Xbox One Analog
    Audio + Microphone
    Xbox One Wired USB
    No
    Xbox One Non-BT Wireless
    No
    Xbox Series X|S Analog
    Audio + Microphone
    Xbox Series X|S Wired USB
    No
    Xbox Series X|S Non-BT Wireless
    No
    0.0
    Base/Dock
    Type
    No Base/Dock
    USB Input
    No
    Line In
    No
    Line Out
    No
    Optical Input
    No
    RCA Input
    No
    Dock Charging
    No
    Power Supply
    No Base/Dock

    The MDR-XB50AP do not have a dock. If you need a headset with a dock that also has a wired connection for gaming or watching movies, then consider the SteelSeries Arctis 7.

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