Short answer: the Harman Kardon Onyx Studio 9 for the higher ranking, the ION Pathfinder 280 for the lower price. The Harman Kardon Onyx Studio 9 ranks #13 of 70 boombox speakers at $186.99. The ION Pathfinder 280 ranks #65 at $169.99, $17 cheaper.
The case for the Harman Kardon Onyx Studio 9: Auracast multi-speaker connection alongside classic stereo pairing. The tradeoff: Slight recessed mids, boost in the upper mids, rolled off upper treble.
What the ION Pathfinder 280 gets right: ~68 hour battery at moderate-high volume. The catch: Bass is not as deep as competitors.
Buy the Harman Kardon Onyx Studio 9 if the ranking matters more than the price. Buy the ION Pathfinder 280 if the price matters more than the ranking.
Specifications Side By Side
| Harman Kardon Onyx Studio 9 | ION Pathfinder 280 | |
|---|---|---|
| Price | $186.99 | $169.99 |
| Ranked | #13 of 70 in Boombox Size Portable Bluetooth Speakers | #65 of 70 in Boombox Size Portable Bluetooth Speakers |
| Bass Extension (-10dB) | 41Hz | 58Hz |
| Max Volume | 101dB | 100dB |
| IP Rating | None | IPX5 |
| Power Input | USB-C | USB-C |
| Stereo | Yes | No |
| TWS | Yes | Yes |
| Weight | 9.3 lbs / 4.2 kg | 23.8 lbs / 10.8 kg |
| App | Yes (Harman Kardon One app) | No |
| Bluetooth Codecs | SBC | SBC |
| EQ | Yes (App EQ) | Yes (High/Low frequency) |
| Party Mode | Yes (Auracast) | No |
| USB Playback | No | Yes |
| Bluetooth Version | 5.3 | - |
| Battery Life | 8 hours (Manufacturer specified) | 100 hours (Manufacturer specified) |
| Output Power | 50W RMS | 120W |
| Dimensions | 11.39" x 11.32" x 5.12" (289.2 x 287.5 x 130 mm) | 14.8" x 10.6" x 17.6" |
| Drivers | 120mm woofer + 3x 20mm tweeters | 2x 4" (102mm) drivers |
| Aux Input | - | Yes |
| FM Tuner | - | Yes |
| Power Bank | - | Yes |
| Built in Microphone | - | No |
| Microphone Input | - | No |
The Two Speakers In Full
Harman Kardon Onyx Studio 9: $186.99 Amazon
Pros: Auracast multi-speaker connection alongside classic stereo pairing. Harman Kardon One app with EQ. USB-C charging, up from the previous generation’s AC power brick.
Cons: Slight recessed mids, boost in the upper mids, rolled off upper treble. Not as deep bass as previous Onyx Studio speakers.
| App | Yes (Harman Kardon One app) |
|---|---|
| Bass Extension (-10dB) | 41Hz |
| Battery Life | 8 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.3 |
| Dimensions | 11.39" x 11.32" x 5.12" (289.2 x 287.5 x 130 mm) |
| Drivers | 120mm woofer + 3x 20mm tweeters |
| EQ | Yes (App EQ) |
| IP Rating | None |
| Max Volume | 101dB |
| Output Power | 50W RMS |
| Party Mode | Yes (Auracast) |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| USB Playback | No |
| Weight | 9.3 lbs / 4.2 kg |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Harman Kardon Onyx Studio 9 vs Altec Lansing Mix 2.0
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- Harman Kardon Onyx Studio 9 vs Zealot ZE21
- Harman Kardon Onyx Studio 9 vs Zealot ZE41
- Harman Kardon Onyx Studio 9 vs Altec Lansing Rockbox XL 2.0
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- Harman Kardon Onyx Studio 9 vs Soundcore Boom 2 Plus
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- Harman Kardon Onyx Studio 9 vs Earfun Uboom X
- Harman Kardon Onyx Studio 9 vs Gemini GRV-650L
- Harman Kardon Onyx Studio 9 vs Harman Kardon Onyx Studio 6
- Harman Kardon Onyx Studio 9 vs Harman Kardon Onyx Studio 8
- Harman Kardon Onyx Studio 9 vs ION Pathfinder 320
- Harman Kardon Onyx Studio 9 vs JBL Partybox Encore
- Harman Kardon Onyx Studio 9 vs Skullcandy Barrel
- Harman Kardon Onyx Studio 9 vs Tronsmart Halo 200
- Harman Kardon Onyx Studio 9 vs W-King H10
- Harman Kardon Onyx Studio 9 vs Zealot S95
- Harman Kardon Onyx Studio 9 vs Harman Kardon Onyx Studio 7
- Links
ION Pathfinder 280: $169.99 Amazon
Pros: ~68 hour battery at moderate-high volume. IPX5 water-resistant. 280° wide-range sound coverage. Wheels and pull-out handle for portability. Waterproof storage compartment. RGB lighting, FM radio, bottle opener.
Cons: Bass is not as deep as competitors. Very heavy. Poor water rating.
| App | No |
|---|---|
| Aux Input | Yes |
| Bass Extension (-10dB) | 58Hz |
| Battery Life | 100 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Built in Microphone | No |
| Dimensions | 14.8" x 10.6" x 17.6" |
| Drivers | 2x 4" (102mm) drivers |
| EQ | Yes (High/Low frequency) |
| FM Tuner | Yes |
| IP Rating | IPX5 |
| Max Volume | 100dB |
| Microphone Input | No |
| Output Power | 120W |
| Party Mode | No |
| Power Bank | Yes |
| Power Input | USB-C |
| Stereo | No |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 23.8 lbs / 10.8 kg |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Links
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Product prices and availability were last checked August 9, 2026 at 6:57 AM UTC 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.