Short answer: the Sony ULT Field 5 for better sound quality, the DOSS Extreme Boom for the lower price. The Sony ULT Field 5 ranks #59 of 120 large speakers, rated 3.5/5, at $348. The DOSS Extreme Boom ranks #115, rated 2.1/5, at $75.99, $272.01 cheaper.
The Sony ULT Field 5 is the better-sounding choice. 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 DOSS Extreme Boom lacks. It links with other speakers (Party Connect up to 100 speakers), which the DOSS Extreme Boom cannot. It has an adjustable EQ, which the DOSS Extreme Boom lacks. The tradeoff: It prioritizes bass and loudness over fidelity: reviews find the upper mids and highs subdued, with limited stereo separation and soundstage depth.
The DOSS Extreme Boom is the lighter choice. An affordable waterproof outdoor speaker with a long rated battery, power bank output, and bass heavy sound for casual parties. At 5.6 lbs (2.52 kg) it weighs noticeably less than the Sony ULT Field 5 at 7.3 lbs (3.3 kg). The tradeoff: The measured 65Hz -10dB bass point means it lacks true low bass despite its boomy voicing.
Buy the Sony ULT Field 5 when sound quality outweighs the price for you, and the DOSS Extreme Boom when the price outweighs sound quality instead.
Want more options? Browse the full Portable Bluetooth rankings.
Prices on this page were last checked November 7, 2026 at 7:34 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 | DOSS Extreme Boom | |
|---|---|---|
| Price | $348.00 | $75.99 |
| Ranked | #59 of 120 in Large Size Portable Bluetooth Speakers | #115 of 120 in Large Size Portable Bluetooth Speakers |
| App | Yes | No |
| Aux Input | Yes | Yes |
| Battery Life | 25 hours (Manufacturer specified) | 30 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC, AAC, LDAC | SBC |
| Bluetooth Version | 5.3 | 5.3 |
| Built-in Microphone | Yes | Yes |
| Dimensions | 12.6” x 5.7” x 4.9” (320 x 144 x 125 mm) | 12.7” x 4.7” x 7.2” (323 x 120 x 184 mm) |
| Drivers | 2x 46mm tweeters + 1x 79mm x 107mm woofer | 60W: Dual drivers + passive radiator |
| EQ | Yes (App + ULT button) | No |
| IP Rating | IP67 | IPX7 |
| Party Mode | Yes (Party Connect up to 100 speakers) | No |
| Power Bank | Yes (USB-C) | Yes (USB-A) |
| Power Input | USB-C | USB-C |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 7.3 lbs (3.3 kg) | 5.6 lbs (2.52 kg) |
| Amplifier Power | 27W | 60W |
| Digital Aux Input | No | No |
| Strap | Yes (detachable shoulder strap) | Yes (detachable shoulder strap) |
| Bass Extension (-10dB) | - | 65Hz |
| MicroSD Playback | - | Yes |
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