Short answer: the Sony ULT Field 5. It ranks #59 of 120 large speakers by sound quality, rated 3.5/5, at $348. The Turtlebox Cub ranks #85, rated 3.0/5, at $330, $18 cheaper, not enough of a saving to outweigh the sound-quality gap.
The ULT Field 5 prioritizes bass and loudness over fidelity, with subdued upper mids and highs. It has LDAC, a 10-band app EQ, an aux input and stereo from one unit. The Cub has only listening impressions so far: loud for its size, warm and bass-forward, with some bass loss at high volume.
Both are IP67 with a USB-C power bank and multi-speaker linking.
Battery: a claimed 25 hours for the ULT Field 5 against 14+ for the Cub.
Weight: 7.3 lbs (3.3 kg) for the ULT Field 5, 5.3 lbs (2.4 kg) for the Cub.
Buy the Sony ULT Field 5. It is rated higher for sound quality, and the $18 saving on the Turtlebox Cub is not enough to make up the difference.
Want more options? Browse the full Portable Bluetooth rankings.
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Specifications Side By Side
| Sony ULT Field 5 | Turtlebox Cub | |
|---|---|---|
| Price | $348.00 | $330.00 |
| Ranked | #59 of 120 in Large Size Portable Bluetooth Speakers | #85 of 120 in Large Size Portable Bluetooth Speakers |
| App | Yes | - |
| Aux Input | Yes | - |
| Battery Life | 25 hours (Manufacturer specified) | 14+ hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC, AAC, LDAC | - |
| Bluetooth Version | 5.3 | 5.4 |
| Built-in Microphone | Yes | - |
| Dimensions | 12.6” x 5.7” x 4.9” (320 x 144 x 125 mm) | 8.6”H x 7.2”W x 5.7”D (218 x 183 x 146 mm) |
| Drivers | 2x 46mm tweeters + 1x 79mm x 107mm woofer | 1x 4.5” (114mm) woofer + 1x 1.3” (33mm) titanium tweeter |
| EQ | Yes (App + ULT button) | - |
| IP Rating | IP67 | IP67 |
| Party Mode | Yes (Party Connect up to 100 speakers) | Yes (Party Mode) |
| Power Bank | Yes (USB-C) | Yes (USB-C) |
| Power Input | USB-C | USB-C |
| Stereo | Yes | No |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 7.3 lbs (3.3 kg) | 5.3 lbs (2.4 kg) |
| Amplifier Power | 27W | - |
| Digital Aux Input | No | - |
| Strap | Yes (detachable shoulder strap) | No |
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