Short answer: both are discontinued, so this only matters if you are buying used. Used, the Soundcore Motion 100 is the better pick: it ranks #45 of 175 medium speakers by sound quality (rated 3.7/5), against #77 (rated 3.4/5) for the Sony XB33. If you want one new, the Sony ULT Field 3 replaces the Sony XB33 and is rated 3.4/5 at $208.
The Soundcore Motion 100 is the better-sounding, lighter pick. At 1.3 lbs (575 g) it weighs much less than the Sony XB33 at 2.4 lbs (1.1 kg). The tradeoff: Not very deep bass, slight distortion.
The Sony XB33 is the deeper-bass, longer-running choice. IP67 rated and lightweight (2.4 lb). Its bass reaches about 50Hz before falling 10dB, against 65Hz for the Soundcore Motion 100. It is rated for 24 hours of battery against 12 for the Soundcore Motion 100. The tradeoff: Not very loud.
Buy the Soundcore Motion 100 only if you find one used in good condition; both are discontinued, and it is the better rated of the two. For a new speaker, buy the Sony ULT Field 3, which replaces the Sony XB33.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Specifications Side By Side
| Soundcore Motion 100 | Sony XB33 | |
|---|---|---|
| Price | $47 Discontinued | $110 Discontinued |
| Ranked | #45 of 175 in Medium Size Portable Bluetooth Speakers | #77 of 175 in Medium Size Portable Bluetooth Speakers |
| App | Yes | Yes (Sony Music Connect App) |
| Aux Input | No | No |
| Bass Extension (-10dB) | 65Hz | 50Hz |
| Battery Life | 12 hours (Manufacturer specified) | 24 hours (Manufacturer specified) |
| EQ | Yes | Yes (3 band) |
| IP Rating | IPX7 | IP67 |
| Power Bank | No | Yes (USB-A) |
| Power Input | USB-C | USB-C |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | AAC, LDAC, SBC | SBC, AAC, LDAC |
| Bluetooth Version | 5.3 | 5.0 |
| Dimensions | 7.5” x 3.1” x 2.4” (190 x 80 x 60 mm) | 9.7” x 3.8” x 4.2” (246 x 97 x 106 mm) |
| Drivers | 2x full-range drivers + 2x passive radiators | 2x 48x70mm X-Balanced racetrack drivers + 2x passive radiators |
| Frequency Response | 50Hz - 40kHz (Manufacturer specified) | - |
| Weight | 1.3 lbs (575 g) | 2.4 lbs (1.1 kg) |
| Amplifier Power | 20W | 16W RMS |
| Built-in Microphone | No | - |
| Digital Aux Input | No | No |
| Bluetooth Latency | - | 110ms |
| Maximum SPL | - | 97dB (measured by Alan Ross Reviews) |
| Party Mode | - | Yes (Party Connect up to 100 speakers) |
| Lights | - | Yes |
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Prices on this page were last checked October 12, 2026 at 4:13 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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The Two Speakers In Full
Soundcore Motion 100: $47 Discontinued eBay
Same family: the Soundcore Motion 300 (larger model, ranked higher, rated 4.5/5), the Soundcore Motion X500 (larger model, rated 4.1/5) and the Soundcore Motion X600 (larger model, rated 4.3/5). See every Soundcore Motion generation.
Pros: Use Oluv’s EQ for the flattest response. Measured bass extension of 65Hz (-10dB).
Cons: Not very deep bass, slight distortion. Real-world battery falls well short of the 12-hour claim at higher volumes (closer to 4 hours at max). Charging takes about 5 hours; no charge-out for other devices. Discontinued and no longer sold new.
Full Soundcore Motion 100 review and specifications →
| Released | Nov 2023 (2 years ago) |
|---|---|
| Amplifier Power | 20W |
| App | Yes |
| Aux Input | No |
| Bass Extension (-10dB) | 65Hz |
| Battery Life | 12 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | AAC, LDAC, SBC |
| Bluetooth Version | 5.3 |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 7.5” x 3.1” x 2.4” (190 x 80 x 60 mm) |
| Drivers | 2x full-range drivers + 2x passive radiators |
| EQ | Yes |
| Frequency Response | 50Hz - 40kHz (Manufacturer specified) |
| IP Rating | IPX7 |
| Omnidirectional | No |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| Weight | 1.3 lbs (575 g) |
- Links
- Reviews, Comparisons and Sound Samples
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Sony XB33: $110 Discontinued eBay
Newer model: the Sony ULT Field 3, ranked higher, rated 3.4/5, released Apr 2025.
Older models: the Sony SRS-XB31 (ranked lower, rated 2.8/5) and the Sony SRS-XB30 (ranked lower, rated 2.6/5). See every Sony XB and ULT generation.
Pros: IP67 rated and lightweight (2.4 lb). App-controlled color LED lighting, Party Connect links up to 100 speakers. ~19 hour real-world battery without lights. Measured bass extension of 50Hz (-10dB).
Cons: Not very loud. Upper bass peaks, midrange dip, upper midrange peaks, not very neutral. Speaker will not remain at max volume and will turn itself down automatically. Discontinued.
Full Sony XB33 review and specifications →
| Released | May 2020 (6 years ago) |
|---|---|
| Amplifier Power | 16W RMS |
| App | Yes (Sony Music Connect App) |
| Aux Input | No |
| Bass Extension (-10dB) | 50Hz |
| Battery Life | 24 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC, AAC, LDAC |
| Bluetooth Latency | 110ms |
| Bluetooth Version | 5.0 |
| Digital Aux Input | No |
| Dimensions | 9.7” x 3.8” x 4.2” (246 x 97 x 106 mm) |
| Drivers | 2x 48x70mm X-Balanced racetrack drivers + 2x passive radiators |
| EQ | Yes (3 band) |
| IP Rating | IP67 |
| Lights | Yes |
| Maximum SPL | 97dB (measured by Alan Ross Reviews) |
| Omnidirectional | No |
| Party Mode | Yes (Party Connect up to 100 speakers) |
| Power Bank | Yes (USB-A) |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| Weight | 2.4 lbs (1.1 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Alan Ross Reviews: Sony XB33 vs XB32 vs JBL Charge 4 best £120 bluetooth speaker? More from alanrossreviews →
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