Short answer: the Onyx Studio 7, with the Yeahbox Sonic Boom Max 3 a spec-sheet risk. The Sonic Boom Max 3 lists a 200W RMS (300W peak) true 3-way, 5-driver array, but it is a budget import brand with limited independent testing and manufacturer-claimed specs. The Onyx Studio 7 has warm sound with boosted bass, though it sounds a little sterile.
Buy the Harman Kardon Onyx Studio 7. It is rated higher for sound quality, and the $19.91 saving on the Yeahbox Sonic Boom Max 3 is not enough to make up the difference.
There is a real gap in water resistance: the Yeahbox Sonic Boom Max 3 at IPX6 (powerful water jets) against the Harman Kardon Onyx Studio 7, which has no water resistance.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
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Specifications Side By Side
| Harman Kardon Onyx Studio 7 | Yeahbox Sonic Boom Max 3 | |
|---|---|---|
| Price | $248.90 | $228.99 |
| Ranked | #14 of 113 in Boombox Size Portable Bluetooth Speakers | #59 of 113 in Boombox Size Portable Bluetooth Speakers |
| Aux Input | Yes | Yes |
| Aux Latency | 0ms | - |
| Bass Extension (-10dB) | 37Hz | - |
| Battery Life | 8 hours (Manufacturer specified) | 111Wh (14.8V/7,500mAh) (Manufacturer specified) |
| Built-in Microphone | Yes | - |
| IP Rating | None | IPX6 |
| Bluetooth Latency | 266ms | - |
| Maximum SPL | 96dB (measured by Alan Ross Reviews) | - |
| Party Mode | Yes (Wireless Dual Sound) | - |
| Power Input | DC Barrel Connector (19V/2.1A) | USB-C |
| Stereo | Partially (1 woofer) | Yes |
| Omnidirectional | No | No |
| TWS | No | Yes |
| Weight | 6.4 lbs (2.9 kg) | 16.8 lbs (7.64 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC (inferred; additional codecs unverified) |
| App | No | Yes |
| EQ | No | Yes |
| Power Bank | No | - |
| USB Playback | No | Yes |
| Amplifier Power | 50W RMS | 200W RMS / 300W Peak |
| Dimensions | 11.3” x 11.3” (285.8 x 285.8 mm) (round design) | 20.7” x 8.3” x 10.6” (525 x 210 x 268 mm) |
| Drivers | 120mm woofer + 2x 25mm tweeters | 189x114mm woofer, 2x 89mm midrange, 2x 38mm tweeters |
| Digital Aux Input | No | No |
| Bluetooth Version | 4.2 | 5.3 |
| Strap | No | No |
| MicroSD Playback | - | Yes |
| Lights | - | Yes |
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