Short answer: the Harman Kardon Onyx Studio 9 if sound quality matters most, the W-King X10-1 if price matters most. The Harman Kardon Onyx Studio 9 ranks #13 of 73 boombox speakers at $186.99. The W-King X10-1 ranks #61 at $143, $43.99 cheaper.
What the Harman Kardon Onyx Studio 9 offers: 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. Watch for: Slight recessed mids, boost in the upper mids, rolled off upper treble. Not as deep bass as previous Onyx Studio speakers.
What the W-King X10-1 offers: 70W RMS output with 120W peak power, 108dB max volume, exceptional 42-hour battery life with power bank, IPX6 waterproof, Bluetooth 5.0 with 100ft range, EQ with indoor/outdoor modes, dual subwoofers with tweeters and passive radiators, TWS stereo pairing, MicroSD and USB playback, AUX input, built-in microphone Watch for: Rolled off treble, not much bass.
Buy the Harman Kardon Onyx Studio 9 when sound quality outweighs the price for you, and the W-King X10-1 when the price outweighs sound quality instead.
Skip the W-King X10-1 if sound quality matters to you. It ranks near the bottom of the 73 boombox speakers.
If battery life is a priority, the W-King X10-1 is rated for 42 hours versus 8 hours for the Harman Kardon Onyx Studio 9.
There is a real gap in water resistance: the W-King X10-1 at IPX6 (powerful water jets) against the Harman Kardon Onyx Studio 9, which has no water resistance.
Specifications Side By Side
| Harman Kardon Onyx Studio 9 | W-King X10-1 | |
|---|---|---|
| Price | $186.99 | $143 |
| Ranked | #13 of 73 in Boombox Size Portable Bluetooth Speakers | #61 of 73 in Boombox Size Portable Bluetooth Speakers |
| Bass Extension (-10dB) | 41Hz | 63Hz |
| Max Volume | 101dB | 108dB |
| 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 | 6.5 lbs / 2.95 kg |
| App | Yes (Harman Kardon One app) | No |
| Bluetooth Codecs | SBC | SBC |
| EQ | Yes (App EQ) | Yes (2 modes - Indoor/Outdoor) |
| Party Mode | Yes (Auracast) | No |
| USB Playback | No | Yes |
| Bluetooth Version | 5.3 | 5.0 |
| Battery Life | 8 hours (Manufacturer specified) | 42 hours (Manufacturer specified) |
| Output Power | 50W RMS | 70W RMS (120W peak) |
| Dimensions | 11.4" x 11.3" x 5.1" (289.2 x 287.5 x 130 mm) | 12.4" x 5.5" x 5.3" (315 x 140 x 135 mm) |
| Drivers | 120mm woofer + 3x 20mm tweeters | 2x 3.66" (93mm) subwoofers + 2x 1.2" (31mm) neodymium tweeters + 3x passive radiators |
| Digital Aux Input | No | No |
| Aux Input | - | Yes |
| MicroSD Playback | - | Yes |
| Power Bank | - | Yes (USB-A) |
| Built in Microphone | - | Yes |
Related Speaker Comparisons
A few more comparisons worth a look in the same class:
- Zealot ZE41 vs ZZA K8
- Zealot ZE21 vs W-King X10
- Zealot S89 vs W-King X10
- Harman Kardon Onyx Studio 9 vs Soundcore Motion Boom+
- Harman Kardon Onyx Studio 9 vs Tronsmart Halo 200
Prices on this page were last checked August 27, 2026 at 10:09 PM 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: $186.99 Amazon eBay
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.
Full Harman Kardon Onyx Studio 9 review and specifications →
| App | Yes (Harman Kardon One app) |
|---|---|
| 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 |
| Max Volume | 101dB |
| Omnidirectional | No |
| Output Power | 50W RMS |
| 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
- Harman Kardon Onyx Studio 9 vs Zealot ZE41
- Harman Kardon Onyx Studio 9 vs Harman Kardon Onyx Studio 7
- Harman Kardon Onyx Studio 9 vs Zealot ZE21
- Harman Kardon Onyx Studio 9 vs Harman Kardon Onyx Studio 6
- Harman Kardon Onyx Studio 9 vs Zealot S89
- Harman Kardon Onyx Studio 9 vs Harman Kardon Onyx Studio 8
- Harman Kardon Onyx Studio 9 vs JBL Boombox 4
- Harman Kardon Onyx Studio 9 vs Vifa Copenhagen 2.0
- See all 56 comparisons
W-King X10-1: $143 Amazon Aliexpress eBay
Pros: 70W RMS output with 120W peak power, 108dB max volume, exceptional 42-hour battery life with power bank, IPX6 waterproof, Bluetooth 5.0 with 100ft range, EQ with indoor/outdoor modes, dual subwoofers with tweeters and passive radiators, TWS stereo pairing, MicroSD and USB playback, AUX input, built-in microphone
Cons: Rolled off treble, not much bass.
Full W-King X10-1 review and specifications →
| App | No |
|---|---|
| Aux Input | Yes |
| Bass Extension (-10dB) | 63Hz |
| Battery Life | 42 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.0 |
| Built in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 12.4" x 5.5" x 5.3" (315 x 140 x 135 mm) |
| Drivers | 2x 3.66" (93mm) subwoofers + 2x 1.2" (31mm) neodymium tweeters + 3x passive radiators |
| EQ | Yes (2 modes - Indoor/Outdoor) |
| IP Rating | IPX6 |
| Max Volume | 108dB |
| MicroSD Playback | Yes |
| Omnidirectional | No |
| Output Power | 70W RMS (120W peak) |
| Party Mode | No |
| Power Bank | Yes (USB-A) |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 6.5 lbs / 2.95 kg |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons