Different classes, so treat this as a step-up-or-not question rather than a head-to-head. The Tribit Stormbox Micro 2 ranks #1 of 62 small speakers by sound quality at $35.39; the Sony ULT Field 1 ranks #99 of 179 medium speakers by sound quality at $138.

The Tribit Stormbox Micro 2 is the lighter pick. An excellent sounding small speaker, with surprisingly deep bass for its size and a strap that holds it on a bike or backpack. At 0.7 lbs (317 g) it weighs much less than the Sony ULT Field 1 at 1.4 lbs (650 g). The catch: Finicky phone charging, which doesn’t usually work.
Why pick the Sony ULT Field 1: A tough, waterproof small speaker that survives drops, with long real world battery life and stereo pairing. It supports AAC Bluetooth, which the Tribit Stormbox Micro 2 lacks. It links with other speakers (Party Connect up to 100 speakers), which the Tribit Stormbox Micro 2 cannot. The catch: Upper midrange peak, rolled off treble.
Buy the Tribit Stormbox Micro 2 at $35.39 if you want a small speaker. Buy the Sony ULT Field 1 at $138 if you want a medium speaker instead.
Looking for alternatives? See the complete Portable Bluetooth rankings.
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Specifications Side By Side
| Tribit Stormbox Micro 2 | Sony ULT Field 1 | |
|---|---|---|
| Price | $35.39 | $138.00 |
| Ranked | #1 of 62 in Small Size Portable Bluetooth Speakers | #99 of 179 in Medium Size Portable Bluetooth Speakers |
| App | Yes | Yes |
| Aux Input | No | No |
| Bass Extension (-10dB) | 65Hz | - |
| Battery Life | 12 hours (Manufacturer specified) | 12 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | AAC, SBC |
| Built-in Microphone | Yes | Yes |
| EQ | Yes (9 Band) | Yes |
| IP Rating | IP67 | IP67 |
| Bluetooth Latency | 265ms | - |
| Maximum SPL | 94dB (measured by Alan Ross Reviews) | - |
| Party Mode | No | Yes (Party Connect up to 100 speakers) |
| Power Bank | Yes (but it doesn’t usually work; USB-C, 10W) | No |
| Power Input | USB-C | USB-C |
| Stereo | No | No |
| Omnidirectional | Pointing up | No |
| TWS | Yes | Yes |
| Weight | 0.7 lbs (317 g) | 1.4 lbs (650 g) |
| Bluetooth Version | 5.3 | 5.3 |
| Amplifier Power | 10W | - |
| Dimensions | 3.9” x 3.9” x 1.7” (99.1 x 99.1 x 42.7 mm) | 8.1” x 3” x 3” (206 x 77 x 76 mm) |
| Drivers | 48mm NdFeB driver | 83mm x 42mm woofer, 16mm tweeter + passive radiator |
| Digital Aux Input | No | No |
| Strap | Yes (built-in strap) | Yes (detachable strap) |
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