Short answer: it depends, the Blast 2 for loud deep bass, the Onyx Studio 5 for balance. The Blast 2 delivers pretty deep bass but sounds quite muddy from boosted lower and upper bass, and Xbass makes it worse. The Onyx Studio 5 is bass-heavy with balanced mids and highs and 7 to 8 hours of battery, but it is warm, lasts only 8 hours at medium volume and is not as loud.
Buy the Harman Kardon Onyx Studio 9, the replacement for the discontinued Harman Kardon Onyx Studio 5; it is rated higher for sound quality than the Tribit Stormbox Blast 2.
Battery life favors the Tribit Stormbox Blast 2: rated for 30 hours against 8 hours for the Harman Kardon Onyx Studio 5.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
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Specifications Side By Side
| Tribit Stormbox Blast 2 | Harman Kardon Onyx Studio 5 | |
|---|---|---|
| Price | $279.99 | $499.99 Discontinued |
| Ranked | #31 of 113 in Boombox Size Portable Bluetooth Speakers | #24 of 113 in Boombox Size Portable Bluetooth Speakers |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | 40Hz | - |
| Battery Life | 30 hours (Manufacturer specified) | 8 hours (Manufacturer specified) |
| IP Rating | IP67 | IPX7 |
| Maximum SPL | 110dB (measured by Alan Ross Reviews) | - |
| Microphone Input | Yes (2x 6.35mm) | - |
| Power Bank | Yes (USB-A) | No |
| Power Input | AC Power Cable or 10w USB-C | DC Barrel Connector (19V/2.1A) |
| Stereo | Yes | Partially (1 woofer) |
| Omnidirectional | No | No |
| TWS | Yes | Yes (see https://www.reddit.com/r/Bluetooth_Speakers/comments/w339x5/how_to_harman_kardon_onyx_studio_5_6_dual_sound/) |
| Weight | 19.2 lbs (8.7 kg) | 6.6 lbs (3 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC, AAC | SBC |
| Built-in Microphone | No | Yes |
| App | Yes (Tribit app) | No |
| EQ | Yes (10 band) | No |
| Party Mode | No | Yes (Wireless Dual Sound) |
| USB Playback | No | No |
| FM Tuner | No | - |
| MicroSD Playback | No | - |
| Amplifier Power | 200W AC / 180W battery | 50W |
| Dimensions | 18.7” x 7.6” x 10.2” (476 x 193 x 259 mm) | 11.3” x 11.3” (285.8 x 285.8 mm) |
| Drivers | 1x ~180x110mm rectangular subwoofer + 2x ~80mm mid drivers + 2x ~25mm tweeters | 120mm woofer + 25mm tweeter + 2x passive radiators |
| Digital Aux Input | No | No |
| Bluetooth Version | 5.4 | 4.2 |
| Strap | No | No |
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