Short answer: both are discontinued, so this only matters if you are buying used. Used, the Tribit Maxsound Plus is the better pick: it ranks #22 of 157 medium speakers by sound quality (rated 4.1/5), against #70 (rated 3.4/5) for the Sony XB33. If you want one new, the Earfun Uboom L ranks #1 at $49.79.
The Tribit Maxsound Plus is the better-sounding, lighter pick. Use XBass mode for flattest frequency response and balanced audio reproduction. At 1.3 lbs (595 g) it weighs much less than the Sony XB33 at 2.4 lbs (1.1 kg). It keeps a wired aux input, which the Sony XB33 lacks. Watch for: Slightly less deep bass than modern class leaders.
The Sony XB33 is the deeper-bass option. IP67 rated and lightweight (2.4 lb). Its bass reaches about 50Hz before falling 10dB, against 58Hz for the Tribit Maxsound Plus. It supports LDAC Bluetooth, which the Tribit Maxsound Plus lacks. It has an adjustable EQ, which the Tribit Maxsound Plus lacks. Watch for: Not very loud.
Buy the Tribit Maxsound Plus 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, start with the Earfun Uboom L instead.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Specifications Side By Side
| Tribit Maxsound Plus | Sony XB33 | |
|---|---|---|
| Price | $79.99 Discontinued | $110 Discontinued |
| Ranked | #22 of 157 in Medium Size Portable Bluetooth Speakers | #70 of 157 in Medium Size Portable Bluetooth Speakers |
| App | No | Yes (Sony Music Connect App) |
| Aux Input | Yes | No |
| Bass Extension (-10dB) | 58Hz | 50Hz |
| Battery Life | 20 hours (Manufacturer specified) | 24 hours (Manufacturer specified) |
| Built-in Microphone | No | - |
| EQ | No | Yes (3 band) |
| IP Rating | IPX7 | IP67 |
| Bluetooth Latency | 160ms | 110ms |
| Maximum SPL | 99dB (measured by Alan Ross Reviews) | 97dB (measured by Alan Ross Reviews) |
| Power Bank | No | Yes (USB-A) |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | No | Yes |
| Weight | 1.3 lbs (595 g) | 2.4 lbs (1.1 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 4.2 | 5.0 |
| Drivers | 2x 44mm full-range drivers + 2x passive radiators | 2x 48x70mm X-Balanced racetrack drivers + 2x passive radiators |
| Amplifier Power | 24W | 16W RMS |
| Power Input | Micro USB | USB-C |
| Dimensions | 2.6” x 7.8” x 2.7” (65 x 198 x 68 mm) | 9.7” x 3.8” x 4.2” (246 x 97 x 106 mm) |
| Digital Aux Input | No | No |
| Bluetooth Codecs | SBC | SBC, AAC, LDAC |
| Strap | No | - |
| Party Mode | - | Yes (Party Connect up to 100 speakers) |
| Lights | - | Yes |
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Prices on this page were last checked October 2, 2026 at 10:18 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
Tribit Maxsound Plus: $79.99 Discontinued eBay
Newer model: the Tribit Xsound Plus 2, ranked lower, rated 3.9/5.
Pros: Use XBass mode for flattest frequency response and balanced audio reproduction. 24W output with dual 44mm drivers and dual passive radiators. Up to 20 hours battery life and IPX7 waterproof casing. Measured bass extension of 58Hz (-10dB).
Cons: Slightly less deep bass than modern class leaders. No true wireless stereo pairing between two units (introduced on the V2). Discontinued; superseded by Maxsound Plus V2 and XSound Plus 2.
Full Tribit Maxsound Plus review and specifications →
| Amplifier Power | 24W |
|---|---|
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | 58Hz |
| Battery Life | 20 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Latency | 160ms |
| Bluetooth Version | 4.2 |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 2.6” x 7.8” x 2.7” (65 x 198 x 68 mm) |
| Drivers | 2x 44mm full-range drivers + 2x passive radiators |
| EQ | No |
| IP Rating | IPX7 |
| Maximum SPL | 99dB (measured by Alan Ross Reviews) |
| Omnidirectional | No |
| Power Bank | No |
| Power Input | Micro USB |
| Stereo | Yes |
| Strap | No |
| TWS | No |
| Weight | 1.3 lbs (595 g) |
- Links
- Reviews, Comparisons and Sound Samples
- Alan Ross Reviews: All Tribit Speakers Compared - Maxsound Plus, Stormbox, Xsound Go, Maxboom More from alanrossreviews →
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- Alan Ross Reviews: Tribit Maxsound Plus v1 vs V2 - upgraded Maxsound Plus tested! 🏅
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Sony XB33: $110 Discontinued eBay
Newer model: the Sony ULT Field 3, ranked higher, rated 3.4/5.
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 →
| 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 xb43 vs Soundcore Motion Plus speakers test More from alanrossreviews →
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