Short answer: the W-King X20. It ranks #43 of 113 boombox speakers by sound quality, rated 3.5/5, at $229.99. The Onn Pro X Large Boom Boombox ranks #49, rated 3.4/5, at $199, $30.99 cheaper, which does not close the gap in sound quality.
Why pick the W-King X20: A loud stereo party speaker with a large subwoofer, a 24 hour battery with power bank, and water resistance. The catch: Rising frequency response but upper treble rolled off, 700Hz and 1.2kHz peaks.
The case for the Onn Pro X Large Boom Boombox: A powerful, waterproof party boombox with a 20 hour battery and light modes at a low price. It links with other speakers (Auracast), which the W-King X20 cannot. Watch for: Bass not as deep as higher ranked speakers like the JBL Boombox 3, JBL Boombox 4, or Tribit Stormbox Blast.
Buy the W-King X20. It is rated higher for sound quality, and saving $30.99 with the Onn Pro X Large Boom Boombox does not make up for the sound-quality gap.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
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
| W-King X20 | Onn Pro X Large Boom Boombox | |
|---|---|---|
| Price | $229.99 after coupon | $199.00 |
| Ranked | #43 of 113 in Boombox Size Portable Bluetooth Speakers | #49 of 113 in Boombox Size Portable Bluetooth Speakers |
| App | Yes (W-King app) | - |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | ~42Hz | - |
| EQ | Yes (App + button modes) | Yes (Bass Boost) |
| IP Rating | IPX6 | IP67 |
| Maximum SPL | 112dB (measured by Alan Ross Reviews) | - |
| MicroSD Playback | Yes | - |
| Power Bank | Yes (USB-A) | Yes (USB-A, 5V/2A) |
| Power Input | USB-C | AC Power cord |
| Stereo | Yes | - |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| USB Playback | Yes | - |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC (inferred; additional codecs unverified) |
| Party Mode | No | Yes (Auracast) |
| Built-in Microphone | No | - |
| Amplifier Power | 330W peak / 200W RMS | 180W RMS (540W peak) |
| Dimensions | 19.9” x 8.5” x 10.6” (506 x 217 x 270 mm) | 20.1” x 10.3” x 9” (510 x 261 x 228 mm) |
| Drivers | 7.5” subwoofer + drivers | 5 speakers |
| Weight | 15.9 lbs (7200 g) | 17.2 lbs (7.8 kg) |
| Digital Aux Input | No | No |
| Battery Life | 24 hours (Manufacturer specified) | 20 hours (Manufacturer specified) |
| Bluetooth Version | 5.4 | 5.4 (Manufacturer specified) |
| Removable Battery | - | No |
| Frequency Response | - | 50Hz - 20kHz (Manufacturer specified) |
| Lights | - | Yes |
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