The right front view of the Sony SRS xB31 speaker.

Sony SRS XB31 Specifications

Here, we list Sony SRS XB31 Extra Bass speaker specifications.  Firstly, these data cover the unit’s length, width, weight, battery recharge time, output power, and music play time per charge.  We also include the frequency response, driver size, Bluetooth support details et al.

Secondly, it’s clear from the published specifications, that the Sony SRS XB31 released in March of 2018, sounds pretty good for as small as it is. E.g. It plays loud enough for small parties on patios, swimming pools, et al, with its approximately ten (10) watts RMS of audio power.

Plus, even at loudest volume, the lithium ion battery can last from three (3) to twenty-four (24) hours per recharge depending on the light setting, surrounding temperature, and program content.  Indeed, the specifications certainly do not mislead as to the great features Sony put into this IPX7 water resistant Bluetooth speaker.

The right front view of the Sony SRS xB31 speaker.
The Sony SRS XB31 speaker right front view.

Sony SRS XB31 Specifications

    • Firstly, the speaker height: 87 mm or 3.43 inches.
    • Width: 231 mm or 9.09 inches.
    • Depth: 65 mm or 2.56 inches.
    • Weight: 890 grams, or 31.39 ounces.
    • Wireless Communication Methods: NFC and Bluetooth.
    • Additionally, the Bluetooth Transmitter Frequency Range: 2.4 to 2.4835 Ghz.
    • Max Communications Range: 10 M. or 30 Ft.
    • The Bluetooth version: 4.2.
    • Modulation method: FHSS.
    • Supported Codecs: SBC, AAC, and LDAC.
    • Audio Frequency Transmission Range: 20 – 20,000 Hz.
    • Microphone Frequency Response: 100 – 7,000 Hz.
    • Sampling Frequency: 44,100 Hz.
    • Profiles supported: A2DP / AVRCP / HFP / HSP.
    • Music playing time: Up to 24 hours (varies by volume setting, temperature, and program content).
    • Transducer: 48 mm or 1.89 inches X 2 with passive radiator design.
    • Audio Output Power (RMS): 5 watts per channel, 10 watts total RMS. *
    • IPX7 waterproof.
    • Recommended charger: 5 volts @ 1.5 amps, micro USB.
    • Lastly, the battery charge time: 5.0 hours.

* = Estimated.

Picture of an iPhone with a Sony SRS XB31 speaker.
An iPhone with a Sony SRS XB31 speaker.

 

Extra Bass XB21 Features

    • Extra Bass technology.
    • NFC compatible.
    • Next, the speaker type is: Full Range, Stereo.
    • Wireless Connection: Bluetooth.
    • Plus, the unit has a high quality electret condenser microphone for the speakerphone function.
    • This speaker is water and dust resistant.
    • Furthermore, this unit has a long lasting metal grill.
    • Also, charging is done via the included micro USB cable.
    • Needs no app to access all its features.
    • Lastly, there is a detachable strap on the speaker.




SRS XB31 Colors

Additionally, this particular Sony speaker you can get in 3 different standard colors that we know of.  It comes in

    1. black,
    2. blue,
    3. red.

SRS XB31 Price

Finally, as of this writing, you can find the XB31 for between $37.00 and $260.00.  The average price appears to be $90.99 US.

Related Posts to Sony SRS XB31 Specifications

    1. Sony SRS XB41 Specifications
    2. SRS XB32 Sony Speaker Specifications
    3. Sony SRS XB43 Specifications
    4. Sony SRS X3 Specifications
    5. SRS X11 Sony Specifications

Other Posts About the Sony SRS XB31

    1. Sony SRS XB31 Orange Light Remains On Problem
    2. How to Charge Sony SRS XB31
    3. Sony SRS XB31 Bluetooth Pairing Directions

References for Sony SRS XB31 Specifications

    1. Sony SRS XB31 Official Support Page from Sony
    2. Where to Buy the Sony SRS XB31

Revision History

    • 2023-02-26: First released.