The Sony SRS-XB40 is rated 3.4/5 for sound quality, #68 of 126 Large Size Portable Bluetooth Speakers. See all Portable Bluetooth rankings for every top pick.
Prices on this page were last checked November 14, 2026 at 6:17 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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Brand: Sony
#68 Sony SRS-XB40: $130 Discontinued eBay
Newer model: the Sony ULT Field 5, ranked higher, rated 3.5/5, released Apr 2025. See every Sony XB and ULT generation.
Pros: A discontinued splash resistant Sony speaker with a claimed 24 hour battery, LDAC, party lights and a USB power bank output. It has two 61mm drivers with passive radiators, 20W of amplifier power, an aux input, NFC pairing and wireless party linking. In listening comparisons it played about 1.5dB louder and reached lower than the JBL Xtreme 2, and it peaked louder than the W-King D8.
Cons: No independent measurements yet, so the rating is estimated from head-to-head listening comparisons. Against the W-King D8 the gap was closer than expected, but the W-King had heavier bass and the XB40 needed app tuning to sound its best. The Soundcore Motion+ was better balanced, though it lacked bass below 100Hz. It uses Bluetooth 4.2, a proprietary DC charger and an IPX5 rating that stops short of full waterproofing, and speakerphone quality is weak. Discontinued.
Is the Sony SRS-XB40 right for you?
Buy it if
- you want long battery life (claimed 24 hours).
- you want stereo sound from a single speaker.
Skip it if
- you want to buy it new: it is discontinued.
| Amplifier Power | 20W |
|---|---|
| App | Yes (Sony Music Center) |
| Aux Input | Yes |
| Battery Life | 24 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC, AAC, LDAC |
| Bluetooth Version | 4.2 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 3.9” x 11” x 4.1” (100 x 279 x 105 mm) |
| Drivers | 2x 61mm full-range drivers + 2x passive radiators |
| EQ | Yes |
| IP Rating | IPX5 |
| Omnidirectional | No |
| Party Mode | Yes |
| Power Input | DC input (included AC adapter) |
| Stereo | Yes |
| TWS | Yes |
| Weight | 3.3 lbs (1500 g) |
- Reviews, Comparisons and Sound Samples
Questions about the Sony SRS-XB40? Ask other owners on r/WirelessSpeakers.