Short answer: the Sony ULT Field 5 on measured sound quality, the Tronsmart Force Max on price. The Sony ULT Field 5 ranks #59 of 126 large speakers, rated 3.5/5, at $348. The Tronsmart Force Max ranks #91, rated 3.0/5, at $119.99, $228.01 cheaper.
The Sony ULT Field 5 is the better-sounding, longer-running choice. A tough, waterproof party speaker with loud, bass focused output, an aux input, a power bank and a long battery. It is rated for 25 hours of battery against 13 for the Tronsmart Force Max. It plays in stereo from a single unit, unlike the Tronsmart Force Max. Watch for: It prioritizes bass and loudness over fidelity: reviews find the upper mids and highs subdued, with limited stereo separation and soundstage depth.
The Tronsmart Force Max is the lighter pick. A waterproof party speaker that spreads sound in all directions, with power bank charging and plenty of playback options. At 5.6 lbs (2.54 kg) it weighs noticeably less than the Sony ULT Field 5 at 7.3 lbs (3.3 kg). The tradeoff: Sonido Pesado found the Tronsmart Halo 100 clearly better, with clearer mids and highs.
Buy the Sony ULT Field 5 if sound quality is the priority over the price, or the Tronsmart Force Max if the price is the priority over sound quality.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Prices on this page were last checked November 14, 2026 at 6:17 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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Specifications Side By Side
| Sony ULT Field 5 | Tronsmart Force Max | |
|---|---|---|
| Price | $348.00 | $119.99 |
| Ranked | #59 of 126 in Large Size Portable Bluetooth Speakers | #91 of 126 in Large Size Portable Bluetooth Speakers |
| App | Yes | No |
| Aux Input | Yes | Yes |
| Battery Life | 25 hours (Manufacturer specified) | 13 hours at 50% volume (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC, AAC, LDAC | - |
| Bluetooth Version | 5.3 | 5.0 |
| Built-in Microphone | Yes | Yes |
| Dimensions | 12.6” x 5.7” x 4.9” (320 x 144 x 125 mm) | 6”H x 10.2”W x 3.3”D (153 x 258 x 85 mm) |
| Drivers | 2x 46mm tweeters + 1x 79mm x 107mm woofer | 2x woofers + 2x tweeters + 2x passive radiators (front and rear) |
| EQ | Yes (App + ULT button) | Yes (3 presets) |
| IP Rating | IP67 | IPX6 |
| Party Mode | Yes (Party Connect up to 100 speakers) | - |
| Power Bank | Yes (USB-C) | Yes (USB-C) |
| Power Input | USB-C | USB-C |
| Stereo | Yes | No (front/rear drivers) |
| Omnidirectional | No | Yes |
| TWS | Yes | Yes |
| Weight | 7.3 lbs (3.3 kg) | 5.6 lbs (2.54 kg) |
| Amplifier Power | 27W | 80W |
| Digital Aux Input | No | - |
| Strap | Yes (detachable shoulder strap) | Yes (built-in strap) |
| Charging Time | - | 4 to 5 hours |
| Frequency Response | - | 20Hz - 20kHz (Manufacturer specified) |
| MicroSD Playback | - | Yes |
| USB Playback | - | Yes |
Where the Ratings Come From
- Sony ULT Field 5: reviews by Joy & Oluv’Sone, Dominik and Mateusz Cholewa.
- Tronsmart Force Max: reviews by Dominik, Sonido Pesado and Audio y Mas.
This comparison is generated from the ratings, specifications and measurements on each product’s own page, and it updates when that data changes. How we rank explains how each rating is decided.
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