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EXTRA BASS Portable Wireless Party Speaker (Black)

  • Take your party outside with a LIVE SOUND experience
  • Boost your party with a single-coloured line light
  • Waterproof and dustproof with IP67 rated
Model: SRSXB21B
This product is currently unavailable

Delivery Information

Please note, we cannot deliver to PO Boxes, Parcel Lockers or international destinations and currently authority to leave (ATL) at doorsteps or un-signed is not available.

Delivery Australia


Regular deliveries to NSW, QLD and VIC metro areas should be received within 1-5 business days. For ACT, SA, WA, TAS, NT metro and other rural areas, orders should be received within 1-7 business days.

Delivery New Zealand

New Zealand

Regular deliveries to Metro areas should be received within 1-5 business days. For rural areas and Stewart Island, orders should be received within 1-7 business days but may dependant on local carriers.

Delivery Costs

Delivery Fees

Some orders may be charged a small delivery fee as part of the convenience of getting your order delivered to your doorstep. See checkout for final costs.

Delivery Sale Periods

Sale Periods

Delivery delays may be experienced during sale periods due to high demand.

  • For returns, see our returns information for more details.
  • Shipping is only available to customers within NSW, VIC, ACT, QLD, SA, WA, NT, TAS only for orders on store.sony.com.au and to North Island, South Island, Stewart Island addresses only for orders on store.sony.co.nz
  • For items over 20kg, Sony (or an authorised logistics provider) will contact to arrange a delivery time. Certain factors such as size, shipping address or volume of deliveries may delay shipments.
  • Pick up and collection of orders are not available.
  • Delivery is currently during standard business hours only.
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Small on size, big on fun

The compact SRS-XB21 fits easily in your bag. You can even pop it in the bottle-holder of your bike - so the party goes wherever you go.

Small on size, big on fun

Key Features

Totally dustproof

Totally dustproof

Thanks to the IP67 rating, you can take your speaker to the beach, the forest, the desert, or wherever you like - the SRS-XB21 will keep on playing, no matter how dusty the surface.

Lasts all day long

Lasts all day long

A 12 hour battery means the SRS-XB21 can party even longer than you can.

Easy button control

Easy button control

No need to rely on a device to operate your SRS-XB21. Do everything you need with just the buttons on your speaker.

Mica reinforced speaker

Mica reinforced speaker

Made with Mica Reinforced Cellular (MRC), the rigid and lightweight speaker cone effortlessly controls the sound without losing quality, by driving power directly into the air.

Wireless with BLUETOOTH technology and NFC

Wireless with BLUETOOTH technology and NFC

BLUETOOTH streaming with NFC connectivity makes it simple to stream your party playlist.


General Features

    • Speaker Size 42mm
    • Speaker Type Full range
    • Communication System Version 4.2
    • Compatible Profiles A2DP / AVRCP / HSP / HFP / SPP
    • Water Protection IP67
    • Hands-Free Function Yes
    • Input and Output Terminals Stereo Mini Jack (IN) ,micro USB
    • Max. Communication Range 10m
    • Frequency Range 2.4GHz band
    • NFC Yes
    • Battery Life 12hrs(Standard mode / Lighting off)
    • Sound Modes LIVE Sound, EXTRA BASS,Standard
    • Supported Codecs SBC / AAC / LDAC

Size and Weight

    • Dimensions (W x H x D) 193 x 72 x65 mm(7 5/8in x 2 7/8in x 2 5/8in)
    • Weight 530g(1 lb 3 oz)


    • Released 2018


Please note: Some product variations, services and/or features mentioned within Product Reviews may not be available in all countries.



When you purchase a Sony product, you have the peace of mind in knowing that your product is covered by Sony's Standard Warranty provided by Sony Australia Limited (for Australian purchases) and Sony New Zealand Limited (for New Zealand purchases)