These are not really the same size class, and that is the honest framing here. The Sony ULT Field 5 ranks #59 of 120 large speakers by sound quality at $348; the Sony ULT Field 3 ranks #71 of 179 medium speakers by sound quality at $208.
The case for 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 keeps a wired aux input, which the Sony ULT Field 3 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 Sony ULT Field 3 is the lighter option. A rugged waterproof stereo speaker with long battery life, a detailed app EQ, a shoulder strap and a phone charging port. At 2.6 lbs (1.2 kg) it weighs much less than the Sony ULT Field 5 at 7.3 lbs (3.3 kg). Watch for: Sounds a bit hollow, a bit boosted in the treble.
Buy the Sony ULT Field 5 at $348 for a large speaker, or the Sony ULT Field 3 at $208 for a medium speaker instead.
Looking for alternatives? See the complete Portable Bluetooth rankings.
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Specifications Side By Side
| Sony ULT Field 5 | Sony ULT Field 3 | |
|---|---|---|
| Price | $348.00 | $208.00 |
| Ranked | #59 of 120 in Large Size Portable Bluetooth Speakers | #71 of 179 in Medium Size Portable Bluetooth Speakers |
| App | Yes | Yes |
| Aux Input | Yes | No |
| Battery Life | 25 hours (Manufacturer specified) | 24 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC, AAC, LDAC | SBC, AAC, LDAC |
| Bluetooth Version | 5.3 | 5.2 |
| Built-in Microphone | Yes | Yes |
| Dimensions | 12.6” x 5.7” x 4.9” (320 x 144 x 125 mm) | 10.1” x 4.4” x 3.1” (256 x 113 x 79 mm) |
| Drivers | 2x 46mm tweeters + 1x 79mm x 107mm woofer | 1x 20mm tweeter + 1x 86mm x 46mm woofer |
| EQ | Yes (App + ULT button) | Yes (App + ULT button) |
| IP Rating | IP67 | IP67 |
| Party Mode | Yes (Party Connect up to 100 speakers) | Yes (Party Connect up to 100 speakers) |
| Power Bank | Yes (USB-C) | Yes (USB-C, 5V/1.5A) |
| Power Input | USB-C | USB-C |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 7.3 lbs (3.3 kg) | 2.6 lbs (1.2 kg) |
| Amplifier Power | 27W | 27W |
| Digital Aux Input | No | No |
| Strap | Yes (detachable shoulder strap) | Yes (detachable shoulder strap) |
Watch Them Compared
Videos and reviews that test both speakers side by side.
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