These sit in different size classes, so this is not a straight ranking comparison. The JBL Xtreme 4 ranks #43 of 120 large speakers by sound quality at $309.95; the Sony ULT Field 3 ranks #71 of 179 medium speakers by sound quality at $208.
What the JBL Xtreme 4 does well: A rugged, waterproof speaker with clear, punchy sound, a swappable battery, a power bank and excellent real world battery life. The catch: It cannot produce the deep rumble of a larger speaker, and bass compression increases near maximum volume.
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 JBL Xtreme 4 at 4.6 lbs (2.1 kg). It supports LDAC Bluetooth, which the JBL Xtreme 4 lacks. The tradeoff: Sounds a bit hollow, a bit boosted in the treble.
Buy the JBL Xtreme 4 at $309.95 if you want a large speaker. Buy the Sony ULT Field 3 at $208 if you want a medium speaker instead.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
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Specifications Side By Side
| JBL Xtreme 4 | Sony ULT Field 3 | |
|---|---|---|
| Price | $309.95 | $208.00 |
| Ranked | #43 of 120 in Large Size Portable Bluetooth Speakers | #71 of 179 in Medium Size Portable Bluetooth Speakers |
| App | Yes | Yes |
| Aux Input | No | No |
| Battery Life | 24 hours (Manufacturer specified) | 24 hours (Manufacturer specified) |
| EQ | Yes (5 band) | Yes (App + ULT button) |
| IP Rating | IP67 | IP67 |
| Bluetooth Latency | 220ms | - |
| Maximum SPL | 106dB (measured by Alan Ross Reviews) | - |
| Party Mode | Yes (Auracast) | Yes (Party Connect up to 100 speakers) |
| Power Bank | Yes (USB-C) | Yes (USB-C, 5V/1.5A) |
| Power Input | USB-C | USB-C |
| Removable Battery | Yes | - |
| TWS | Yes | Yes |
| Weight | 4.6 lbs (2.1 kg) | 2.6 lbs (1.2 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC, AAC, LDAC |
| Built-in Microphone | Yes | Yes |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| Bluetooth Version | 5.3 | 5.2 |
| Dimensions | 11.7” x 5.9” x 5.6” (297 x 149 x 141 mm) | 10.1” x 4.4” x 3.1” (256 x 113 x 79 mm) |
| Drivers | 2x 70mm woofers, 2x 19mm tweeters + 2x passive radiators | 1x 20mm tweeter + 1x 86mm x 46mm woofer |
| Frequency Response | 44Hz - 20kHz (Manufacturer specified) | - |
| Amplifier Power | 100W | 27W |
| Digital Aux Input | No | No |
| Strap | Yes (detachable shoulder strap) | Yes (detachable shoulder strap) |
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