The Sony SRS-XB21 ranks #126 out of 166 total Medium Size Portable Bluetooth Speakers for sound quality. See all Portable Bluetooth rankings for every top pick.
Brand: Sony
Prices on this page were last checked October 9, 2026 at 8:01 AM 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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#126 Sony SRS-XB21 Discontinued eBay
Newer model: the Sony ULT Field 1, ranked higher, rated 3.1/5.
Older model: the Sony SRS-XB20 (ranked higher, rated 2.8/5). See every Sony XB and ULT generation.
Pros: Slightly clearer highs than the Sony SRS-XB20 in a side-by-side test, with IP67 waterproofing, Party Booster tap control, Party Chain linking and app EQ.
Cons: Against the XB20 the reviewer and most commenters preferred the older model’s bigger, warmer sound, finding the XB21’s mids weak and highs over-boosted. It uses the XB20’s two small drivers, so bass is limited, and it is discontinued.
| App | Yes (Sony Music Center) |
|---|---|
| Battery Life | 12 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Version | 4.2 |
| Dimensions | 2.8”H x 7.6”W x 2.6”D (72 x 193 x 65 mm) |
| Drivers | 2x 42mm full-range drivers, 1x passive radiator |
| EQ | Yes |
| IP Rating | IP67 |
| Lights | Yes |
| Power Input | Micro USB |
| Stereo | Partially |
| TWS | Yes |
| Weight | 1.2 lbs (530 g) |
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