Short answer: the XB33, by a small margin. It ranks #59 of 135 medium speakers at $110; the XB23 ranks #64 at $100, five places and $10 apart.
Both share a strange Sony quirk. Neither speaker will hold its own maximum volume: the XB23’s cons note it reduces its own volume over time at max, and the XB33 has the same self-limiting behavior. If you buy either expecting to run it flat out, be aware it’s designed not to let you.
The XB33 adds lighting and a bigger pairing network. App-controlled LED lighting and Sony’s Party Connect, which links up to 100 speakers, are both absent from the XB23. Real-world battery life is also claimed at around 19 hours without the lights running, against the XB23’s 12-hour rating.
The XB23 is described as the more neutral of the two. Its cons are narrower: bass that drops off noticeably at high volume, where the XB33’s cons list broader tonal issues including upper bass peaks and a midrange dip.
Buy the XB33 for the lighting, the longer battery claim, and the slightly higher ranking. Buy the XB23 if a flatter tonal balance matters more to you than either.
Specifications Side By Side
| Sony XB23 | Sony XB33 | |
|---|---|---|
| Price | $100 | $110 |
| Ranked | #64 of 134 in Medium Size Portable Bluetooth Speakers | #59 of 134 in Medium Size Portable Bluetooth Speakers |
| Bass Extension (-10dB) | 67Hz | 50Hz |
| Battery Life | 12 hours (Manufacturer specified) | 24 hours (Manufacturer specified) |
| Max Volume | 95dB | 97dB |
| Party Mode | Yes (Partyconnect up to 100 speakers) | Yes (Partyconnect up to 100 speakers) |
| Weight | 1.3 lbs / 580 g | 2.4 lbs / 1.1 kg |
| Bluetooth Version | 5.0 | 5.0 |
| Dimensions | 3.0" x 8.58" x 3.0" (76 x 218 x 76 mm) | 9.69" x 3.82" x 4.17" (246 x 97 x 106 mm) |
| Output Power | 8W RMS | 16W RMS |
| Bluetooth Codecs | SBC, AAC, LDAC | SBC, AAC, LDAC |
| Built in Microphone | Yes | - |
| EQ | Yes (3-band: bass, mid, treble) | Yes (3 band) |
| App | Yes (Sony Music Center) | Yes (Sony Music Connect App) |
| Drivers | 2x 42x51mm X-Balanced racetrack drivers + 2x passive radiators | 2x 48x70mm X-Balanced racetrack drivers + 2x passive radiators |
| IP Rating | IPX4 | IP67 |
| Aux Input | - | No |
| Bluetooth Latency | - | 110ms |
| Power Bank | - | Yes |
| Stereo | - | Yes |
The Two Speakers In Full
Sony XB23: $100
Pros: Reasonably neutral. IP67 rated with a strap hook for backpacks. USB-C charging; up to 12 hour battery life.
Cons: Bass drops off a ton at high levels. Reduces its own volume over time when turned to max
| App | Yes (Sony Music Center) |
|---|---|
| Bass Extension (-10dB) | 67Hz |
| Battery Life | 12 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC, AAC, LDAC |
| Bluetooth Version | 5.0 |
| Built in Microphone | Yes |
| Dimensions | 3.0" x 8.58" x 3.0" (76 x 218 x 76 mm) |
| Drivers | 2x 42x51mm X-Balanced racetrack drivers + 2x passive radiators |
| EQ | Yes (3-band: bass, mid, treble) |
| IP Rating | IPX4 |
| Max Volume | 95dB |
| Output Power | 8W RMS |
| Party Mode | Yes (Partyconnect up to 100 speakers) |
| Weight | 1.3 lbs / 580 g |
- Reviews, Comparisons and Sound Samples
- Links
Sony XB33: $110
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.
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.
| App | Yes (Sony Music Connect App) |
|---|---|
| Aux Input | No |
| Bass Extension (-10dB) | 50Hz |
| Battery Life | 24 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC, AAC, LDAC |
| Bluetooth Latency | 110ms |
| Bluetooth Version | 5.0 |
| Dimensions | 9.69" x 3.82" x 4.17" (246 x 97 x 106 mm) |
| Drivers | 2x 48x70mm X-Balanced racetrack drivers + 2x passive radiators |
| EQ | Yes (3 band) |
| IP Rating | IP67 |
| Max Volume | 97dB |
| Output Power | 16W RMS |
| Party Mode | Yes (Partyconnect up to 100 speakers) |
| Power Bank | Yes |
| Stereo | Yes |
| Weight | 2.4 lbs / 1.1 kg |
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Product prices and availability were last checked August 8, 2026 at 6:24 AM UTC 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.