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 Harman Kardon Onyx Studio 9 ranks #15 of 113 boombox speakers by sound quality at $184.99.
The Tribit Stormbox Lava is the louder, longer-running pick. A loud, waterproof large speaker with strong bass, a long battery and an aux input, for far less than its rivals. Alan Ross Reviews measured it at 108dB at full volume, against 101dB for the Harman Kardon Onyx Studio 9. It is rated for 24 hours of battery against 8 for the Harman Kardon Onyx Studio 9. At 5.2 lbs (2.37 kg) it weighs much less than the Harman Kardon Onyx Studio 9 at 9.3 lbs (4.2 kg). Watch for: XBass can make the low end muddy and obscure vocals, while the deepest notes lose authority and clarity falls at maximum volume.
Why pick the Harman Kardon Onyx Studio 9: An elegant living room portable with balanced, smooth, non-fatiguing sound, app EQ, and stereo pairing for music lovers. It links with other speakers (Auracast), which the Tribit Stormbox Lava cannot. Watch for: It has no water resistance, aux input or USB playback, and its eight-hour claimed battery life is short for an outdoor portable.
Buy the Tribit Stormbox Lava at $139.99 if you want a large speaker. Buy the Harman Kardon Onyx Studio 9 at $184.99 if you want a boombox speaker instead.
If water resistance matters to you, the Tribit Stormbox Lava at IP67 (brief submersion) holds up far better than the Harman Kardon Onyx Studio 9 at no water resistance.
Want more options? Browse the full 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.
As an eBay Partner, we may be compensated if you make a purchase.
Specifications Side By Side
| Tribit Stormbox Lava | Harman Kardon Onyx Studio 9 | |
|---|---|---|
| Price | $139.99 | $184.99 |
| Ranked | #3 of 120 in Large Size Portable Bluetooth Speakers | #15 of 113 in Boombox Size Portable Bluetooth Speakers |
| App | Yes | Yes (Harman Kardon One app) |
| Aux Input | Yes | No |
| Aux Latency | 20ms | - |
| Bass Extension (-10dB) | 44Hz | 41Hz |
| Battery Life | 24 hours (Manufacturer specified) | 8 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | AAC, SBC | SBC |
| Bluetooth Latency | 128ms AAC, 144ms SBC | - |
| Built-in Microphone | Yes | - |
| EQ | Yes (10 band) | Yes (App EQ) |
| IP Rating | IP67 | None |
| Maximum SPL | 108dB (measured by Alan Ross Reviews) | 101dB (measured by Alan Ross Reviews) |
| Party Mode | No | Yes (Auracast) |
| Power Bank | Yes (USB-A) | - |
| Power Input | USB-C | AC Power Cable (2-Prong) |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 5.2 lbs (2.37 kg) | 9.3 lbs (4.2 kg) |
| Bluetooth Version | 5.4 | 5.3 |
| Dimensions | 12.2” x 5.8” x 6” (310 x 147 x 152 mm) | 11.4” x 11.3” x 5.1” (289.2 x 287.5 x 130 mm) |
| Drivers | 2x 70mm woofers, 2x 30mm tweeters | 120mm woofer + 3x 20mm tweeters |
| Frequency Response | 43Hz - 20kHz (Manufacturer specified) | - |
| Amplifier Power | 80W | 50W RMS |
| Digital Aux Input | No | No |
| Strap | Yes (detachable shoulder strap) | No |
| USB Playback | - | No |
Related Speaker Comparisons
More worthwhile head-to-heads for Tribit Stormbox Lava: