These are not really the same size class, and that is the honest framing here. The Tribit Stormbox Lava ranks #3 of 120 large speakers by sound quality at $139.99; the Sony ULT Field 1 ranks #99 of 179 medium speakers by sound quality at $138.
The Tribit Stormbox Lava is the longer-running choice. A loud, waterproof large speaker with strong bass, a long battery and an aux input, for far less than its rivals. It is rated for 24 hours of battery against 12 for the Sony ULT Field 1. It keeps a wired aux input, which the Sony ULT Field 1 lacks. It plays in stereo from a single unit, unlike the Sony ULT Field 1. The tradeoff: XBass can make the low end muddy and obscure vocals, while the deepest notes lose authority and clarity falls at maximum volume.
The Sony ULT Field 1 is the lighter choice. A tough, waterproof small speaker that survives drops, with long real world battery life and stereo pairing. At 1.4 lbs (650 g) it weighs much less than the Tribit Stormbox Lava at 5.2 lbs (2.37 kg). It links with other speakers (Party Connect up to 100 speakers), which the Tribit Stormbox Lava cannot. The catch: Upper midrange peak, rolled off treble.
Buy the Tribit Stormbox Lava at $139.99 if you want a large speaker. Buy the Sony ULT Field 1 at $138 if you want a medium speaker instead.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
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
| Tribit Stormbox Lava | Sony ULT Field 1 | |
|---|---|---|
| Price | $139.99 | $138.00 |
| Ranked | #3 of 120 in Large Size Portable Bluetooth Speakers | #99 of 179 in Medium Size Portable Bluetooth Speakers |
| App | Yes | Yes |
| Aux Input | Yes | No |
| Aux Latency | 20ms | - |
| Bass Extension (-10dB) | 44Hz | - |
| Battery Life | 24 hours (Manufacturer specified) | 12 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | AAC, SBC | AAC, SBC |
| Bluetooth Latency | 128ms AAC, 144ms SBC | - |
| Built-in Microphone | Yes | Yes |
| EQ | Yes (10 band) | Yes |
| IP Rating | IP67 | IP67 |
| Maximum SPL | 108dB (measured by Alan Ross Reviews) | - |
| Party Mode | No | Yes (Party Connect up to 100 speakers) |
| Power Bank | Yes (USB-A) | No |
| Power Input | USB-C | USB-C |
| Stereo | Yes | No |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 5.2 lbs (2.37 kg) | 1.4 lbs (650 g) |
| Bluetooth Version | 5.4 | 5.3 |
| Dimensions | 12.2” x 5.8” x 6” (310 x 147 x 152 mm) | 8.1” x 3” x 3” (206 x 77 x 76 mm) |
| Drivers | 2x 70mm woofers, 2x 30mm tweeters | 83mm x 42mm woofer, 16mm tweeter + passive radiator |
| Frequency Response | 43Hz - 20kHz (Manufacturer specified) | - |
| Amplifier Power | 80W | - |
| Digital Aux Input | No | No |
| Strap | Yes (detachable shoulder strap) | Yes (detachable strap) |
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