Short answer: the Harman Kardon Onyx Studio 9 if sound quality matters most, the W-King T11 if price matters most. The Harman Kardon Onyx Studio 9 ranks #13 of 73 boombox speakers at $186.99. The W-King T11 ranks #35 at $150, $36.99 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 T11 offers: 100W RMS output with 240W peak power, 112dB max volume, IPX6 waterproof, 10-hour battery life, power bank function, dual 5.25-inch woofers with tweeters and passive radiators, EQ with multiple modes, microphone and karaoke input, MicroSD and USB playback, TWS stereo pairing Watch for: Almost as deep of bass as the top ranked ones. A little hollow sounding. Wall wart charger.
Buy the Harman Kardon Onyx Studio 9 when sound quality outweighs the price for you, and the W-King T11 when the price outweighs sound quality instead.
If water resistance matters to you, the W-King T11 at IPX6 (powerful water jets) holds up far better than the Harman Kardon Onyx Studio 9 at no water resistance.
Specifications Side By Side
| Harman Kardon Onyx Studio 9 | W-King T11 | |
|---|---|---|
| Price | $186.99 | $150 |
| Ranked | #13 of 73 in Boombox Size Portable Bluetooth Speakers | #35 of 73 in Boombox Size Portable Bluetooth Speakers |
| Bass Extension (-10dB) | 41Hz | 43Hz |
| Max Volume | 101dB | 112dB |
| IP Rating | None | IPX6 |
| Power Input | AC Power Cable (2-Prong) | AC Power brick |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 9.3 lbs / 4.2 kg | 11.2 lbs / 5.1 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 | - |
| Battery Life | 8 hours (Manufacturer specified) | 10 hours (Manufacturer specified) |
| Output Power | 50W RMS | 100W RMS / 240W peak |
| Dimensions | 11.4" x 11.3" x 5.1" (289.2 x 287.5 x 130 mm) | 8.1"D x 8.6"W x 17.4" (205.7 x 219.5 x 442 mm) tall |
| Drivers | 120mm woofer + 3x 20mm tweeters | 2x 133mm (5.25") woofers + 2x ~30mm (1.2") tweeters + 2x passive radiators |
| Digital Aux Input | No | No |
| Aux Input | - | Yes |
| Aux Latency | - | 0ms |
| Bluetooth Latency | - | 66ms |
| MicroSD Playback | - | Yes |
| Power Bank | - | Yes (USB-A) |
| Built in Microphone | - | No |
Related Speaker Comparisons
A few more comparisons worth a look in the same class:
- Zealot ZE41 vs ZZA K8
- Tronsmart Bang Max vs Zealot ZE01
- Zealot ZE41 vs W-King X10
- Harman Kardon Onyx Studio 9 vs Skullcandy Barrel
- Gemini GRV-650L vs Harman Kardon Onyx Studio 9
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
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- Harman Kardon Onyx Studio 9 vs Harman Kardon Onyx Studio 7
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- 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
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W-King T11: $150 Amazon Aliexpress eBay
Pros: 100W RMS output with 240W peak power, 112dB max volume, IPX6 waterproof, 10-hour battery life, power bank function, dual 5.25-inch woofers with tweeters and passive radiators, EQ with multiple modes, microphone and karaoke input, MicroSD and USB playback, TWS stereo pairing
Cons: Almost as deep of bass as the top ranked ones. A little hollow sounding. Wall wart charger.
Full W-King T11 review and specifications →
| App | No |
|---|---|
| Aux Input | Yes |
| Aux Latency | 0ms |
| Bass Extension (-10dB) | 43Hz |
| Battery Life | 10 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Latency | 66ms |
| Built in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 8.1"D x 8.6"W x 17.4" (205.7 x 219.5 x 442 mm) tall |
| Drivers | 2x 133mm (5.25") woofers + 2x ~30mm (1.2") tweeters + 2x passive radiators |
| EQ | Yes (multiple modes) |
| IP Rating | IPX6 |
| Max Volume | 112dB |
| MicroSD Playback | Yes |
| Omnidirectional | No |
| Output Power | 100W RMS / 240W peak |
| Party Mode | No |
| Power Bank | Yes (USB-A) |
| Power Input | AC Power brick |
| Stereo | Yes |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 11.2 lbs / 5.1 kg |
- Reviews, Comparisons and Sound Samples
- Alan Ross Reviews: W King T11 party boombox and Karaoke machine review vs T9, Stormbox Blast and Boombox 3. More from alanrossreviews →
- Jay’s Straight Up Reviews & More: Dual W-King T11 (EQ1, EQ2) 🆚 JBL Partybox 110 (Bass One) 📛 Are two T11’s TWS Louder than one PB110? More from JaysStraightUpReviews →
- Jay’s Straight Up Reviews & More: W-King T11 (EQ1, Firmware 2.32) 🆚 Onn Large Party Speaker (Bass Boost Off/On) - Budget Battle!💥
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