Short answer: the Charge 6, and the ranking gap is large. It ranks #12 of 179 medium speakers at $149.95; the ULT Field 3 ranks #71 at $208, $58.05 less.
The ULT Field 3 has a genuinely useful feature set. IP67 rating, a 24-hour battery, a 10-band app EQ, and Party Connect for up to 100 speakers. Our notes describe the sound itself as a bit hollow with some boosted treble.
The Charge 6 is described as more neutral than the Charge 5 it replaced, flatter through the mids and treble, though it still has some boosted bass by default and gets bright above 2kHz.
Buy the Charge 6 for the meaningfully better measured sound. Buy the ULT Field 3 if the feature list and the lower price matter more to you.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
A waterproof medium speaker with a long battery and a power bank output, with more balanced sound than older Charge models.
A rugged waterproof stereo speaker with long battery life, a detailed app EQ, a shoulder strap and a phone charging port.
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
| JBL Charge 6 | Sony ULT Field 3 | |
|---|---|---|
| Price | $149.95 | $208.00 |
| Ranked | #12 of 179 in Medium Size Portable Bluetooth Speakers | #71 of 179 in Medium Size Portable Bluetooth Speakers |
| App | Yes | Yes |
| Aux Input | No | No |
| Bass Extension (-10dB) | 53Hz | - |
| Battery Life | 24 hours (Manufacturer specified) | 24 hours (Manufacturer specified) |
| Digital Aux Input | Yes (USB-C) | No |
| EQ | Yes (7 band) | Yes (App + ULT button) |
| IP Rating | IP68 | IP67 |
| Maximum SPL | 102dB (measured by Alan Ross Reviews) | - |
| Party Mode | Yes (Auracast) | Yes (Party Connect up to 100 speakers) |
| Power Bank | Yes (USB-C, 5V/2.4A) | Yes (USB-C, 5V/1.5A) |
| Stereo | No | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 2.2 lbs (990 g) | 2.6 lbs (1.2 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.4 | 5.2 |
| Dimensions | 9” x 3.9” x 3.7” (228.8 x 98.5 x 94 mm) | 10.1” x 4.4” x 3.1” (256 x 113 x 79 mm) |
| Drivers | 53mm x 93mm woofer, 20mm tweeter | 1x 20mm tweeter + 1x 86mm x 46mm woofer |
| Frequency Response | 56Hz - 20kHz (-6dB) (Manufacturer specified) | - |
| Power Input | USB-C | USB-C |
| Amplifier Power | 45W | 27W |
| Bluetooth Codecs | SBC, AAC | SBC, AAC, LDAC |
| Built-in Microphone | No | Yes |
| Strap | Yes (detachable strap) | Yes (detachable shoulder strap) |
Watch Them Compared
Videos and reviews that test both speakers side by side.
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