Short answer: the Motion Boom, on both price and ranking. It ranks #14 of 120 large speakers at $109.99; the T9 ranks #53 at $111.23, $1.24 more. The Soundcore Motion Boom is discontinued; its replacement is the Soundcore Boom 2. If you are buying new, get the Soundcore Boom 2.
The T9’s spec sheet reads long: 80W output, a 24-hour battery with power bank function, dual subwoofers, RGB lighting, microSD and AUX support, and even a karaoke mode with a bundled wireless microphone. Our notes still flag peaks in the upper mids that make it sound a bit harsh.
The Motion Boom keeps it simpler and measures better for it. Our notes call it excellent budget-friendly value with a genuinely long battery of its own, 24 hours claimed, and a waterproof buoyant design that doubles as a practical carry handle.
Buy the Motion Boom for the better value and higher ranking. Buy the T9 if the karaoke mode and bundled microphone specifically matter to you.
If water resistance matters to you, the Soundcore Motion Boom at IPX7 (brief submersion) holds up far better than the W-King T9 at no water resistance.
Want more options? Browse the full Portable Bluetooth rankings.
A great value waterproof boombox that floats, with loud, bass rich sound, a long battery and a phone charging port.
A loud stereo party speaker with a wireless microphone for karaoke, lights, a long battery and a power bank.
Prices on this page were last checked November 7, 2026 at 7:34 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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Specifications Side By Side
| Soundcore Motion Boom | W-King T9 | |
|---|---|---|
| Price | $109.99 Discontinued | $111.23 |
| Ranked | #14 of 120 in Large Size Portable Bluetooth Speakers | #53 of 120 in Large Size Portable Bluetooth Speakers |
| App | Yes | No |
| Aux Input | No | Yes |
| Bass Extension (-10dB) | 53Hz | 47Hz |
| Battery Life | 24 hours (Manufacturer specified) | 24 hours (Manufacturer specified) |
| EQ | Yes | No |
| IP Rating | IPX7 | None |
| Bluetooth Latency | 170ms | - |
| Maximum SPL | 106dB (measured by Alan Ross Reviews) | 106dB (measured by Alan Ross Reviews) |
| Party Mode | No | No |
| Power Bank | Yes (USB-A) | Yes (USB-A) |
| Power Input | USB-C | USB-C |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 3.3 lbs (1.5 kg) | 10.1 lbs (4.6 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| Built-in Microphone | Yes | Yes |
| Bluetooth Version | 5.0 | 5.3 |
| Dimensions | 13.6” x 7.9” x 5.8” (346 x 200 x 148 mm) | 11.8” x 5.9” x 4.7” (300 x 150 x 120 mm) |
| Drivers | 2x 63.5mm titanium fullrange drivers + 2x passive radiators | 2x 4.04” subwoofers + drivers |
| Amplifier Power | 30W | 80W |
| Digital Aux Input | No | No |
| MicroSD Playback | - | Yes |
| Lights | - | Yes |
| Strap | - | No |
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