Short answer: the Zealot ZE41. Both are rated 4.1/5 for sound quality (#17 and #14 of 113 boombox speakers), and the Zealot ZE41 costs $219.95 against $248.90 for the Harman Kardon Onyx Studio 7, and with sound quality even, the cheaper one is the better buy.
On the Harman Kardon Onyx Studio 7 side: Warm sound with boosted bass. The catch: Sounds a little sterile.
Buy the Zealot ZE41. Both are rated the same for sound quality, and it costs $28.95 less than the Harman Kardon Onyx Studio 7.
Water resistance is not close: the Zealot ZE41 is rated at IPX5 (water jets), well ahead of the Harman Kardon Onyx Studio 7 at 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 | Zealot ZE41 | |
|---|---|---|
| Price | $248.90 | $219.95 |
| Ranked | #14 of 113 in Boombox Size Portable Bluetooth Speakers | #17 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) | 4 hours (Manufacturer specified) |
| Built-in Microphone | Yes | - |
| IP Rating | None | IPX5 |
| Bluetooth Latency | 266ms | - |
| Maximum SPL | 96dB (measured by Alan Ross Reviews) | - |
| Party Mode | Yes (Wireless Dual Sound) | Yes (PartyAdd up to 100 speakers) |
| Power Input | DC Barrel Connector (19V/2.1A) | Type-C |
| Stereo | Partially (1 woofer) | Yes |
| Omnidirectional | No | No |
| TWS | No | Yes |
| Weight | 6.4 lbs (2.9 kg) | 25.3 lbs (11.48 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC (inferred; additional codecs unverified) |
| App | No | Yes |
| EQ | No | Yes (Vocal, Bass Boost, Normal modes) |
| Power Bank | No | Yes (USB-A + USB-C) |
| USB Playback | No | Yes |
| Amplifier Power | 50W RMS | 300W |
| Dimensions | 11.3” x 11.3” (285.8 x 285.8 mm) (round design) | 22.1” x 9.4” x 13” (562 x 238 x 331 mm) |
| Drivers | 120mm woofer + 2x 25mm tweeters | 191x130mm 140W subwoofer + 2x 93mm 60W midrange drivers + 2x 42mm 20W tweeters |
| Digital Aux Input | No | No |
| Bluetooth Version | 4.2 | 5.3 |
| Strap | No | No |
| Battery Capacity | - | 48000mAh (12x4000mAh) |
| Frequency Response | - | 20Hz - 20kHz (Manufacturer specified) |
| Microphone Input | - | Yes (Karaoke mode) |
| MicroSD Playback | - | Yes |
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