Short answer: the Tronsmart Bang 2. It ranks #56 of 126 large speakers by sound quality, rated 3.6/5, at $109.99; the Sony ULT Field 5 ranks #59, rated 3.5/5, and costs $348, which makes this an easy call rather than a real tradeoff.
The Tronsmart Bang 2 is the lighter pick. A loud party speaker whose bass holds up at high volume, with water resistance, a long battery, app EQ and a shoulder strap. At 5.8 lbs (2.63 kg) it weighs noticeably less than the Sony ULT Field 5 at 7.3 lbs (3.3 kg). The catch: Verdicts against the Soundcore Boom 2 and the Tribit Stormbox Lava were split: Dominik Reviews preferred the Soundcore Boom 2, and several listeners found the Bang 2’s mids muffled and its highs subdued without custom EQ.
Why pick the Sony ULT Field 5: A tough, waterproof party speaker with loud, bass focused output, an aux input, a power bank and a long battery. It supports LDAC Bluetooth, which the Tronsmart Bang 2 lacks. Watch for: It prioritizes bass and loudness over fidelity: reviews find the upper mids and highs subdued, with limited stereo separation and soundstage depth.
Buy the Tronsmart Bang 2. It is rated higher for sound quality than the Sony ULT Field 5 and costs less, so only choose the other one for a particular feature it does better.
Looking for alternatives? See the complete Portable Bluetooth rankings.
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
| Tronsmart Bang 2 | Sony ULT Field 5 | |
|---|---|---|
| Price | $109.99 | $348.00 |
| Ranked | #56 of 126 in Large Size Portable Bluetooth Speakers | #59 of 126 in Large Size Portable Bluetooth Speakers |
| Amplifier Power | 90W | 27W |
| App | Yes (Tronsmart) | Yes |
| Aux Input | Yes | Yes |
| Battery Life | 26 hours at 50% volume, lights off (Manufacturer specified) | 25 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC, AAC, LDAC |
| Bluetooth Version | 5.3 | 5.3 |
| Charging Time | 4.5 hours | - |
| Dimensions | 8.2”H x 15.3”W x 6.2”D (208 x 389 x 158 mm) | 12.6” x 5.7” x 4.9” (320 x 144 x 125 mm) |
| Drivers | 1x racetrack mid-woofer + 2x tweeters + 2x passive radiators | 2x 46mm tweeters + 1x 79mm x 107mm woofer |
| EQ | Yes (app) | Yes (App + ULT button) |
| Frequency Response | 53Hz - 20kHz (Manufacturer specified) | - |
| IP Rating | IPX6 | IP67 |
| Lights | Yes | - |
| Maximum SPL | 105dB (Manufacturer specified) | - |
| MicroSD Playback | Yes | - |
| Omnidirectional | No | No |
| Party Mode | Yes (multi-speaker pairing) | Yes (Party Connect up to 100 speakers) |
| Power Bank | Yes (USB-C) | Yes (USB-C) |
| Power Input | USB-C | USB-C |
| Stereo | Partially | Yes |
| Strap | Yes (detachable shoulder strap) | Yes (detachable shoulder strap) |
| TWS | Yes | Yes |
| USB Playback | Yes | - |
| Weight | 5.8 lbs (2.63 kg) | 7.3 lbs (3.3 kg) |
| Built-in Microphone | - | Yes |
| Digital Aux Input | - | No |
Where the Ratings Come From
- Tronsmart Bang 2: reviews by Dominik, Jagist and BT Sound Lab.
- Sony ULT Field 5: reviews by Joy & Oluv’Sone, Dominik and Mateusz Cholewa.
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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