Short answer: it depends on what you need. The Partybox 110 delivers the more neutral, bigger sound, a slight step up from the Partybox 100, but its bass is not as deep and its JBL daisychain will not talk to non-JBL speakers. The ULT Field 1 is IP67 rated, survives a 1m dunk and runs 28+ hours with ULT bass boost off, though it has an upper-midrange peak, rolled-off treble and is a much smaller speaker.
Buy the JBL Partybox 110 at $379.95 for a party speaker, or the Sony ULT Field 1 at $138 for a medium speaker instead.
There is a real gap in water resistance: the Sony ULT Field 1 at IP67 (brief submersion) against the JBL Partybox 110, which has IPX4 (splashing).
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
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Specifications Side By Side
| JBL Partybox 110 | Sony ULT Field 1 | |
|---|---|---|
| Price | $379.95 | $138.00 |
| Ranked | #9 of 53 in Party Size Portable Bluetooth Speakers | #99 of 179 in Medium Size Portable Bluetooth Speakers |
| App | Yes | Yes |
| Aux Input | Yes | No |
| Bass Extension (-10dB) | 41Hz | - |
| Battery Life | 12 hours (Manufacturer specified) | 12 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | AAC, SBC |
| Bluetooth Version | 5.1 | 5.3 |
| Charging Time | 3.5 hours | - |
| Drivers | 2x 5.25” woofers, 2x 2.25” tweeters | 83mm x 42mm woofer, 16mm tweeter + passive radiator |
| EQ | Yes (3 band) | Yes |
| Guitar Input | Yes | - |
| IP Rating | IPX4 | IP67 |
| Microphone Input | Yes (Karaoke mode with echo effect) | - |
| Party Mode | No | Yes (Party Connect up to 100 speakers) |
| Power Bank | Yes (USB-A, 5V/2.1A) | No |
| Power Input | AC Power cord | USB-C |
| Stereo | Partially | No |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| USB Playback | Yes | - |
| Weight | 23.8 lbs (10.8 kg) | 1.4 lbs (650 g) |
| Amplifier Power | 160W | - |
| Digital Aux Input | No | No |
| Lights | Yes | - |
| Dimensions | 22.4”H x 11.6”W x 11.8”D (568 x 295 x 300 mm) | 8.1” x 3” x 3” (206 x 77 x 76 mm) |
| Strap | No | Yes (detachable strap) |
| Built-in Microphone | - | Yes |
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