Short answer: the Sony ULT Field 5, if you are buying new. The Dockin D Fine+ 2 ranks higher than it (#29 vs #59 of 120 large speakers, 4.1/5 vs 3.5/5) but is discontinued, so only consider it used; the Sony ULT Field 5 is still sold new at $348.
On the Sony ULT Field 5 side: IP67 rated, dustproof and water resistant. The tradeoff: Bass not as deep as others in the category, and sound quality overall is just okay.
Buy the Sony ULT Field 5 new; the Dockin D Fine+ 2 is no longer sold new, so it only makes sense as a used find.
Looking for alternatives? See the complete Portable Bluetooth rankings.
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Specifications Side By Side
| Dockin D Fine+ 2 | Sony ULT Field 5 | |
|---|---|---|
| Price | $150 Discontinued | $348.00 |
| Ranked | #29 of 120 in Large Size Portable Bluetooth Speakers | #59 of 120 in Large Size Portable Bluetooth Speakers |
| Bass Extension (-10dB) | 45Hz | - |
| Battery Life | 16 hours (Manufacturer specified) | 25 hours (Manufacturer specified) |
| EQ | Yes (Bass boost 3 steps) | Yes (App + ULT button) |
| IP Rating | IPX5 | IP67 |
| Maximum SPL | 96dB (measured by Alan Ross Reviews) | - |
| Power Bank | Yes | Yes (USB-C) |
| Power Input | USB-C | USB-C |
| TWS | Yes | Yes |
| Weight | 5.1 lbs (2.3 kg) | 7.3 lbs (3.3 kg) |
| App | No | Yes |
| Aux Input | Yes | Yes |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC, AAC, LDAC |
| Built-in Microphone | Yes | Yes |
| Party Mode | No | Yes (Party Connect up to 100 speakers) |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| Bluetooth Version | 5.0 | 5.3 |
| Dimensions | 12.2” x 4.1” x 4.1” (310 x 103 x 103 mm) | 12.6” x 5.7” x 4.9” (320 x 144 x 125 mm) |
| Drivers | 2x tweeters, 2x midrange/bass drivers + 2x passive radiators | 2x 46mm tweeters + 1x 79mm x 107mm woofer |
| Amplifier Power | 50W | 27W |
| Digital Aux Input | No | No |
| Strap | - | Yes (detachable shoulder strap) |
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