Short answer: the Harman Kardon Onyx Studio 7. It ranks #14 of 112 boombox speakers by sound quality, rated 4.1/5, at $248.90. The Tronsmart Bang Max ranks #52, rated 3.4/5, at $229.99, $18.91 cheaper, not enough of a saving to outweigh the sound-quality gap.
The Harman Kardon Onyx Studio 7 is the better-sounding, lighter option. An elegant home portable with warm, spacious sound, strong deep bass, and stereo pairing with a second unit. At 6.4 lbs (2.9 kg) it weighs much less than the Tronsmart Bang Max at 12.8 lbs (5.8 kg). It links with other speakers (Wireless Dual Sound), which the Tronsmart Bang Max cannot. The catch: Consumer Reports finds the bass prominent and boomy, mids hazy, treble slightly smeared and the soundstage congested.
The Tronsmart Bang Max is the louder, longer-running choice. A loud, feature packed party speaker with big bass, app EQ, lights, and separate mic and guitar inputs. Alan Ross Reviews measured it at 111dB at full volume, against 96dB for the Harman Kardon Onyx Studio 7. It is rated for 24 hours of battery against 8 for the Harman Kardon Onyx Studio 7. It is rated IPX6, while the Harman Kardon Onyx Studio 7 has no water resistance. Watch for: Its bass-first tuning prioritizes impact over accuracy: upper mids and lower treble can sound unnatural, while fine midrange and treble detail are limited.
Buy the Harman Kardon Onyx Studio 7. It is rated higher for sound quality, and the $18.91 saving on the Tronsmart Bang Max is not enough to make up the difference.
Want more options? Browse the full Portable Bluetooth rankings.
An elegant home portable with warm, spacious sound, strong deep bass, and stereo pairing with a second unit.
A loud, feature packed party speaker with big bass, app EQ, lights, and separate mic and guitar inputs.
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Specifications Side By Side
| Harman Kardon Onyx Studio 7 | Tronsmart Bang Max | |
|---|---|---|
| Price | $248.90 | $229.99 |
| Ranked | #14 of 112 in Boombox Size Portable Bluetooth Speakers | #52 of 112 in Boombox Size Portable Bluetooth Speakers |
| Aux Input | Yes | Yes |
| Aux Latency | 0ms | 16ms |
| Bass Extension (-10dB) | 37Hz | 39Hz |
| Battery Life | 8 hours (Manufacturer specified) | 24 hours (Manufacturer specified) |
| Built-in Microphone | Yes | No |
| IP Rating | None | IPX6 |
| Bluetooth Latency | 266ms | 160ms |
| Maximum SPL | 96dB (measured by Alan Ross Reviews) | 111dB (measured by Alan Ross Reviews) |
| Party Mode | Yes (Wireless Dual Sound) | No |
| Power Input | DC Barrel Connector (19V/2.1A) | AC Power brick |
| Stereo | Partially (1 woofer) | Yes |
| Omnidirectional | No | No |
| TWS | No | Yes |
| Weight | 6.4 lbs (2.9 kg) | 12.8 lbs (5.8 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| App | No | Yes |
| EQ | No | Yes (multiple modes) |
| Power Bank | No | Yes (USB-A) |
| USB Playback | No | No |
| Amplifier Power | 50W RMS | 130W |
| Dimensions | 11.3” x 11.3” (285.8 x 285.8 mm) (round design) | 18.5” x 7.8” x 10.2” (470 x 199 x 260 mm) |
| Drivers | 120mm woofer + 2x 25mm tweeters | 2x ~165mm (6.5”) woofers + 2x ~63mm (2.5”) mid drivers + 2x ~25mm (1”) tweeters |
| Digital Aux Input | No | No |
| Bluetooth Version | 4.2 | 5.3 |
| Strap | No | - |
| MicroSD Playback | - | Yes |
| Lights | - | Yes |
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