Sony SRS-XB43 EXTRA BASS Portable Bluetooth Speaker
The Sony SRS-XB43 is a larger portable wireless speaker built around separate left/right woofers and tweeters. Sony specifies Bluetooth 5.0, EXTRA BASS, LIVE SOUND, IP67 protection and up to approximately 24 hours of rated battery life.
Key features
Left/right woofers and tweeters
EXTRA BASS, LIVE SOUND and STAMINA modes
IP67 water and dust protection
Bluetooth 5.0
SBC, AAC and LDAC codec support
3.5mm stereo mini input
USB-A DC output for charging compatible devices
Approx. 24-hour rated battery life under Sony test conditions
Sony Music Center and Fiestable app compatibility
Firmware freshness
Sony released firmware version 5500 for the SRS-XB43 on 4 October 2025. The update addresses an issue where the CHARGE indicator could remain illuminated and drain the battery after the USB-C cable was disconnected. Firmware can be checked and updated through Sony Music Center on a compatible phone.
FAQ
How does the XB43 differ from the XB33? The XB43 is larger and uses dedicated left/right woofers and tweeters, while the XB33 is more compact and uses full-range speaker units.
Can I connect an analogue audio source? Yes. Sony specifies a stereo mini-jack input on the XB43.
Is it waterproof? Sony rates the speaker IP67 for water and dust protection when used according to its care instructions.
Is this Sony's latest party-speaker family? No. Buyers wanting newer Sony designs should also compare the current ULT FIELD range where available.
