Short answer: the Onyx Studio 9 for sound, the W-King H10 if you need a microphone. The H10 comes with a wireless microphone but has not very deep bass. The Onyx Studio 9 adds Auracast multi-speaker connection alongside classic stereo pairing, though it has slightly recessed mids, a boost in the upper mids and rolled off upper treble.
What the Harman Kardon Onyx Studio 9 gets right: Auracast multi-speaker connection alongside classic stereo pairing. Set against that: Slight recessed mids, boost in the upper mids, rolled off upper treble.
On the W-King H10 side: Comes with wireless microphone. Set against that: Not very deep bass.
Buy the Harman Kardon Onyx Studio 9. It ranks higher for sound quality than the W-King H10 and costs less, which settles it without a real tradeoff to make.
If battery life is a priority, the W-King H10 is rated for 24 hours versus 8 hours for the Harman Kardon Onyx Studio 9.
If water resistance matters to you, the W-King H10 at IPX6 (powerful water jets) holds up far better than the Harman Kardon Onyx Studio 9 at no water resistance.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Specifications Side By Side
| Harman Kardon Onyx Studio 9 | W-King H10 | |
|---|---|---|
| Price | $189.99 | $215 Discontinued |
| Ranked | #14 of 75 in Boombox Size Portable Bluetooth Speakers | #54 of 75 in Boombox Size Portable Bluetooth Speakers |
| Bass Extension (-10dB) | 41Hz | 54Hz |
| Maximum SPL | 101dB (measured by Alan Ross Reviews) | 115dB (measured by Alan Ross Reviews) |
| IP Rating | None | IPX6 |
| Power Input | AC Power Cable (2-Prong) | USB-C |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 9.3 lbs (4.2 kg) | 7.1 lbs (3.2 kg) |
| App | Yes (Harman Kardon One app) | No |
| Bluetooth Codecs | SBC | SBC |
| EQ | Yes (App EQ) | Yes (multiple modes) |
| Party Mode | Yes (Auracast) | No |
| USB Playback | No | Yes |
| Bluetooth Version | 5.3 | 5.0 |
| Battery Life | 8 hours (Manufacturer specified) | 24 hours (Manufacturer specified) |
| Amplifier Power | 50W RMS | 120W RMS |
| Dimensions | 11.4" x 11.3" x 5.1" (289.2 x 287.5 x 130 mm) | 14.5" x 9.9" (368.3 x 251.7 mm) (incomplete) |
| Drivers | 120mm woofer + 3x 20mm tweeters | 1x 5.25" (133mm) subwoofer + 2x 31mm midrange drivers + 2x 3" (76mm) tweeters |
| Digital Aux Input | No | No |
| Aux Input | No | Yes |
| Aux Latency | - | 0ms |
| Bluetooth Latency | - | 150ms |
| MicroSD Playback | - | Yes |
| Power Bank | - | Yes (USB-A) |
| Wireless Microphones | - | Yes 2 Included |
| Built-in Microphone | - | Yes |
| Microphone Input | - | Yes (Karaoke mode with echo effect) |
| Discontinued | - | Yes |
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Prices on this page were last checked September 22, 2026 at 5:11 AM UTC. Product prices and availability are accurate as of that date/time 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.
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The Two Speakers In Full
Harman Kardon Onyx Studio 9: $189.99 Amazon eBay
Pros: An elegant 4.2kg living-room portable with a measured 41Hz -10dB bass point, 101dB maximum level, three tweeters, app EQ, stereo pairing and Auracast multi-speaker linking. Reviews praise its balanced, smooth presentation and non-fatiguing treble, making it a more music-focused choice than most party speakers. Measured bass extension of 41Hz (-10dB).
Cons: It has no water resistance, aux input or USB playback, and its eight-hour claimed battery life is short for an outdoor portable. Bass is less deep than some earlier Onyx Studio models, while the slightly recessed mids and rolled-off top end mean it is not the most open or detailed option; it still charges from an AC power cable rather than USB-C.
Full Harman Kardon Onyx Studio 9 review and specifications →
| Amplifier Power | 50W RMS |
|---|---|
| App | Yes (Harman Kardon One app) |
| Aux Input | No |
| Bass Extension (-10dB) | 41Hz |
| Battery Life | 8 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.3 |
| Digital Aux Input | No |
| Dimensions | 11.4" x 11.3" x 5.1" (289.2 x 287.5 x 130 mm) |
| Drivers | 120mm woofer + 3x 20mm tweeters |
| EQ | Yes (App EQ) |
| IP Rating | None |
| Maximum SPL | 101dB (measured by Alan Ross Reviews) |
| Omnidirectional | No |
| Party Mode | Yes (Auracast) |
| Power Input | AC Power Cable (2-Prong) |
| Stereo | Yes |
| TWS | Yes |
| USB Playback | No |
| Weight | 9.3 lbs (4.2 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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W-King H10: $215 Discontinued eBay
Pros: Comes with wireless microphone. Loud. Measured bass extension of 54Hz (-10dB).
Cons: Not very deep bass. Boosted upper bass. Upper midrange dips. Distorts above medium volumes. No water rating. Discontinued and sold out everywhere, including direct from W-King. Discontinued.
Full W-King H10 review and specifications →
| Amplifier Power | 120W RMS |
|---|---|
| App | No |
| Aux Input | Yes |
| Aux Latency | 0ms |
| Bass Extension (-10dB) | 54Hz |
| Battery Life | 24 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Latency | 150ms |
| Bluetooth Version | 5.0 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 14.5" x 9.9" (368.3 x 251.7 mm) (incomplete) |
| Discontinued | Yes |
| Drivers | 1x 5.25" (133mm) subwoofer + 2x 31mm midrange drivers + 2x 3" (76mm) tweeters |
| EQ | Yes (multiple modes) |
| IP Rating | IPX6 |
| Maximum SPL | 115dB (measured by Alan Ross Reviews) |
| MicroSD Playback | Yes |
| Microphone Input | Yes (Karaoke mode with echo effect) |
| Omnidirectional | No |
| Party Mode | No |
| Power Bank | Yes (USB-A) |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 7.1 lbs (3.2 kg) |
| Wireless Microphones | Yes 2 Included |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons