Different classes, so treat this as a step-up-or-not question rather than a head-to-head. The Tribit Stormbox Lava ranks #3 of 120 large speakers by sound quality at $139.99; the Bose Soundlink Flex 2nd gen ranks #37 of 179 medium speakers by sound quality at $159.
Different sizes. The Stormbox Lava is a large 5.2 lbs (2.37 kg) stereo speaker. The Flex 2nd Gen is a medium 1.3 lbs (586 g) speaker. Each is rated within its own class.
The Lava measured about 108dB with bass to about 44Hz, and has a 10-band app EQ, an aux input and a claimed 24 hours. Keep XBass restrained.
The Flex 2nd Gen has a clear midrange, AAC and aptX Adaptive, and a claimed 12 hours. It is mono with no low bass rumble.
Buy the Tribit Stormbox Lava ($139.99) for a large speaker; the Bose Soundlink Flex 2nd gen ($159) suits a medium speaker instead.
Looking for alternatives? See the complete Portable Bluetooth rankings.
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 | Bose Soundlink Flex 2nd gen | |
|---|---|---|
| Price | $139.99 | $159.00 |
| Ranked | #3 of 120 in Large Size Portable Bluetooth Speakers | #37 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 | SBC, AAC, aptX Adaptive |
| Bluetooth Latency | 128ms AAC, 144ms SBC | - |
| Built-in Microphone | Yes | Yes |
| EQ | Yes (10 band) | Yes (3 band) |
| IP Rating | IP67 | IP67 |
| Maximum SPL | 108dB (measured by Alan Ross Reviews) | - |
| Party Mode | No | Yes (Bose Party mode) |
| Power Bank | Yes (USB-A) | - |
| Power Input | USB-C | USB-C |
| Stereo | Yes | No |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 5.2 lbs (2.37 kg) | 1.3 lbs (586 g) |
| Bluetooth Version | 5.4 | 5.3 |
| Dimensions | 12.2” x 5.8” x 6” (310 x 147 x 152 mm) | 7.9” x 3.5” x 2” (201 x 90 x 52 mm) |
| Drivers | 2x 70mm woofers, 2x 30mm tweeters | 60mm full-range driver with passive radiators |
| Frequency Response | 43Hz - 20kHz (Manufacturer specified) | - |
| Amplifier Power | 80W | - |
| Digital Aux Input | No | No |
| Strap | Yes (detachable shoulder strap) | Yes (built-in loop) |
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