The front left view of the Sony SRS XB21 speaker.

How to Reset Sony SRS XB21

Show you how to reset your Sony SRS XB21 Extra Bass speaker to its default settings.  Resetting restores the 21 to default state. Plus, resetting erases any earlier paired Bluetooth devices from its memory. Clearing these stops this wireless speaker from pairing to any nearby Bluetooth devices. Also, you might reset to get it ready for sale or re-gifting, or to stop it from pairing wirelessly with devices you no longer wish it to connect with.

How to Reset the Sony SRS XB21, Step by Step

1. Turn the Speaker ON

Press and release the Power button for a half-second or so. Find the Power button as shown in the next picture.

The -Power- button on the Sony SRS XB21 speaker. How to Reset Sony SRS XB21.
Sony SRS XB21 -Power- button.

Find the Power button, as shown in the last picture above.

Then, the status light comes on, as shown next.

The glowing -Power- light on the speaker.
The speaker’s -Power- lamp glowing.

The speaker may make a ding-dong tone sound when it powers up, should it connect to a nearby device. Or it may make no sound at all if it does not.  Whether the unit pairs or not though, this reset routine works the same way, as follows.

2. Press and Hold the Power and Volume DOWN Buttons Together

Find these buttons as shown next.  They are both on the top button panel, as we point out in the next picture.

Picture of the -Power- and -Volume DOWN- buttons.
The -Power- and -Volume Down- buttons.

The XB21 then enters reset mode.

Then after a miniscule pause, the speaker powers OFF, and the status lamp goes dark, as shown next. Note that on the SRS XB21, there is no power-down sound.

The dark -Power- lamp on the Sony SRS XB21 speaker.
Sony SRS XB21 -Power- lamp dark.

3. Check that your Sony SRS XB21 Did Indeed Reset

Next, power on the unit again, as detailed in step 1 above.

Note that after reset, the XB21 comes up in discovery mode. The Pairing Mode lamp fast flashes white to let you know this.

The glowing -Bluetooth Status- light.
The -Bluetooth Status- lamp glowing.

This is a signal that you may then look for this speaker on a nearby BT device, and pair to it if you so desire.

4. Done with How to Reset Sony SRS XB21 !

The reset is now finished. So you may now sell or gift it, or pair it again with your favorite Bluetooth devices.

After a reset, the XB21 no longer automatically links with any previously paired Bluetooth device. Thus, to restore auto connecting, you manually pair it with a device. Then after that, any time that both speaker and that device have Bluetooth activated, and they’re near to each other, pairing would automatically take place once more.

Related Posts to How to Reset Sony SRS XB21

    1. How to Reset Sony SRS XB43 Wireless Speaker
    2. How to Reset Sony Bluetooth Speaker
    3. Resetting the Sony SRS XB13 Extra Bass Speaker
    4. How to Reset Sony SRS XB10 Portable Speaker
    5. How to Reset Sony SRS XB12 Speaker

Other Posts About the Sony SRS XB21

    1. How to Reset Sony SRS XB21 Portable Speaker
    2. Checking Battery Life on the Sony SRS XB21 Speaker
    3. How to Turn Off Lights on Sony SRS XB21
    4. How to Put Sony SRS XB21 in Pairing Mode
    5. Sony SRS XB21 WPC Button Explained

References for How to Reset Sony SRS XB21

    1. Sony SRS XB21 Bluetooth Speaker Product Page at

Revision History

    • 2021-09-23: First published.