Short answer: the Tribit Maxsound Plus/Thunderbox Plus. It ranks #21 of 140 medium speakers by sound quality at $79.99; the Sony ULT Field 3 ranks #60 and costs $138, so there is little reason to consider the other one.
What the Tribit Maxsound Plus V1/V2/Thunderbox Plus offers: Use Xbass mode for flattest frequency response. V1/V2/Thunderbox Plus sound exactly the same. Watch for: Slightly less deep bass than the best in category.
What the Sony ULT Field 3 offers: IP67 rated, dustproof and water resistant. 24 hour battery life. App with 10-band EQ. Party Connect with up to 100 speakers. USB-C in/out for charging your phone. Watch for: Sounds a bit hollow, a bit boosted in the treble. Custom EQ and the ULT bass-boost button can’t be used together - turning on ULT disables the EQ. Bass is very weak with ULT off. Lost to the JBL Charge 6 in a side-by-side comparison despite being the larger speaker.
Buy the Tribit Maxsound Plus/Thunderbox Plus. It ranks higher for sound quality than the Sony ULT Field 3 and costs less, so the other one has nothing left to offer.
Specifications Side By Side
| Tribit Maxsound Plus/Thunderbox Plus | Sony ULT Field 3 | |
|---|---|---|
| Price | $79.99 | $138.00 |
| Ranked | #21 of 140 in Medium Size Portable Bluetooth Speakers | #60 of 140 in Medium Size Portable Bluetooth Speakers |
| App | No | Yes |
| Aux Input | Yes | No |
| Bass Extension (-10dB) | 58Hz | - |
| Battery Life | 20 hours (Manufacturer specified) | 24 hours (Manufacturer specified) |
| Built in Microphone | No | Yes |
| EQ | No | Yes (App + ULT button) |
| IP Rating | IPX7 | IP67 |
| Bluetooth Latency | 160ms | - |
| Max Volume | 99dB | - |
| Power Bank | No | Yes (USB-C, 5V/1.5A) |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | No | Yes |
| Weight | 1.3 lbs / 595 g | 2.6 lbs / 1.2 kg |
| Bluetooth Version | 4.2 | 5.2 |
| Drivers | 2x 44mm full-range drivers + 2x passive radiators | 1x 20mm tweeter + 1x 86mm x 46mm woofer |
| Output Power | 24W | 27W |
| Power Input | Micro USB | USB-C |
| Dimensions | 2.6" x 7.8" x 2.7" (65 x 198 x 68 mm) (2.56 x 7.79 x 2.68 inches) | 10.1" x 4.4" x 3.1" (256 x 113 x 79 mm) |
| Digital Aux Input | No | No |
| Bluetooth Codecs | - | SBC, AAC, LDAC |
| Party Mode | - | Yes (Party Connect up to 100 speakers) |
Related Speaker Comparisons
A few more comparisons worth a look in the same class:
- Tribit Xsound Mega vs Bose SoundLink Color II
- Minirig Mini 2 vs Tribit Xsound Mega
- Tribit Stormbox Lava vs Tribit Xsound Mega
- Soundcore Motion 300 vs Sony ULT Field 3
- Soundcore Motion+ vs Sony ULT Field 3
Prices on this page were last checked September 1, 2026 at 2:15 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/Thunderbox Plus: $79.99 Amazon eBay
Pros: Use Xbass mode for flattest frequency response. Identical driver, tuning, and sound to the Thunderbox Plus and the newer Maxsound Plus V2.
Cons: Slightly less deep bass than the best in category. No true wireless stereo pairing between two units, unlike the V2.
Full Tribit Maxsound Plus/Thunderbox Plus review and specifications →
| App | No |
|---|---|
| Aux Input | Yes |
| Bass Extension (-10dB) | 58Hz |
| Battery Life | 20 hours (Manufacturer specified) |
| 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) (2.56 x 7.79 x 2.68 inches) |
| Drivers | 2x 44mm full-range drivers + 2x passive radiators |
| EQ | No |
| IP Rating | IPX7 |
| Max Volume | 99dB |
| Omnidirectional | No |
| Output Power | 24W |
| Power Bank | No |
| Power Input | Micro USB |
| Stereo | Yes |
| 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 →
- Alan Ross Reviews: Tribit Stormbox Flow has deeper bass than the Bose Flex but………..
- Alan Ross Reviews: Anker Soundcore 3 vs Tribit Maxsound Plus - Best £50 speaker
- Alan Ross Reviews: JBL Flip 6 vs Maxsound Plus and Soundcore Boost - ultimate travel speaker!
- Alan Ross Reviews: Earfun Uboom Review - full test - vs tribit maxsound and motion plus!
- Alan Ross Reviews: Tribit Maxsound Plus v1 vs V2 - upgraded Maxsound Plus tested! 🏅
- Head-to-Head Comparisons
- Tribit Maxsound Plus/Thunderbox Plus vs Tribit Xsound Mega
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- Tribit Maxsound Plus/Thunderbox Plus vs Harman Kardon Luna
- Tribit Maxsound Plus/Thunderbox Plus vs B&O Beosound A1 3rd gen
- Tribit Maxsound Plus/Thunderbox Plus vs JBL Charge 5 Wifi
- Tribit Maxsound Plus/Thunderbox Plus vs JBL Charge 5
- Tribit Maxsound Plus/Thunderbox Plus vs JBL Flip 7
- Tribit Maxsound Plus/Thunderbox Plus vs Soundcore Boom 3i
- See all 75 comparisons
Sony ULT Field 3: $138.00 Amazon eBay
Pros: IP67 rated, dustproof and water resistant. 24 hour battery life. App with 10-band EQ. Party Connect with up to 100 speakers. USB-C in/out for charging your phone.
Cons: Sounds a bit hollow, a bit boosted in the treble. Custom EQ and the ULT bass-boost button can’t be used together - turning on ULT disables the EQ. Bass is very weak with ULT off. Lost to the JBL Charge 6 in a side-by-side comparison despite being the larger speaker.
Full Sony ULT Field 3 review and specifications →
| App | Yes |
|---|---|
| Aux Input | No |
| Battery Life | 24 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC, AAC, LDAC |
| Bluetooth Version | 5.2 |
| Built in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 10.1" x 4.4" x 3.1" (256 x 113 x 79 mm) |
| Drivers | 1x 20mm tweeter + 1x 86mm x 46mm woofer |
| EQ | Yes (App + ULT button) |
| IP Rating | IP67 |
| Omnidirectional | No |
| Output Power | 27W |
| Party Mode | Yes (Party Connect up to 100 speakers) |
| Power Bank | Yes (USB-C, 5V/1.5A) |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| Weight | 2.6 lbs / 1.2 kg |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Sony ULT Field 3 vs Bose Soundlink Mini
- Sony ULT Field 3 vs Xiaomi Mi Portable
- Sony ULT Field 3 vs Sony XB33
- Sony ULT Field 3 vs Bose Soundlink Mini 2
- Sony ULT Field 3 vs Soundcore 3/Soundcore Select 2
- Sony ULT Field 3 vs Turtlebox Ranger
- Sony ULT Field 3 vs Beats Pill 2024
- Sony ULT Field 3 vs JBL Flip 5
- See all 81 comparisons