Sony XB31 Specifications

The Sony SRS XB31 speaker right front view.

Here, we list Sony 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 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 Sony XB31 right front view.

Sony 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.

An iPhone with a Sony XB31.

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.