Short answer: the JBL Boombox 4 for better sound quality, the W-King X20S for the lower price. The JBL Boombox 4 ranks #20 of 113 boombox speakers, rated 4.0/5, at $549.95. The W-King X20S ranks #30, rated 3.8/5, at $150.99, $398.96 cheaper.
Why pick the JBL Boombox 4: An extremely loud boombox for its size with fully waterproof, dustproof build, a long battery and a flexible app EQ. The catch: Pretty overpriced for the category.
What the W-King X20S does well: A lighter, waterproof boombox with clear mids, plenty of volume, FM radio and a handle plus shoulder strap. It keeps a wired aux input, which the JBL Boombox 4 lacks. The tradeoff: Less bass and depth than the W-King X20 and about 3dB quieter, and at maximum volume its mids and highs start to drown out the bass.
Buy the JBL Boombox 4 if sound quality matters more than the price. Buy the W-King X20S if the price matters more than sound quality.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Prices on this page were last checked November 14, 2026 at 6:17 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
| JBL Boombox 4 | W-King X20S | |
|---|---|---|
| Price | $549.95 | $150.99 |
| Ranked | #20 of 113 in Boombox Size Portable Bluetooth Speakers | #30 of 113 in Boombox Size Portable Bluetooth Speakers |
| App | Yes | Yes (W-KING) |
| Aux Input | No | Yes |
| Bass Extension (-10dB) | 41Hz | - |
| Battery Life | 28 hours (Manufacturer specified) | 24 hours (Manufacturer specified) |
| EQ | Yes (7 band) | Yes |
| IP Rating | IP68 | IPX7 |
| Bluetooth Latency | AAC 144ms, SBC 48ms | - |
| Maximum SPL | 115dB (measured by Alan Ross Reviews) | - |
| Party Mode | Yes (Auracast) | - |
| Power Input | AC Power cord | USB-C |
| Removable Battery | Yes | - |
| Stereo | Yes | Partially |
| Omnidirectional | No | No |
| Weight | 13.2 lbs (5.98 kg) | 13.8 lbs (6.25 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC, LC3, AAC | - |
| Bluetooth Version | 5.4 | 5.4 |
| Built-in Microphone | No | Yes |
| Power Bank | Yes (USB-C, up to 30W) | - |
| TWS | Yes | Yes |
| Digital Aux Input | Yes (USB-C) | - |
| USB Playback | No | Yes |
| FM Tuner | No | Yes |
| Microphone Input | No | - |
| MicroSD Playback | No | Yes |
| Amplifier Power | 210W AC / 200W battery | 140W RMS (180W peak) |
| Dimensions | 20.1” x 10.2” x 8.3” (510 x 260 x 210 mm) | 7.6”H x 17.4”W x 9.4”D (192 x 442 x 240 mm) |
| Drivers | 2x 123mm woofers + 2x 20mm tweeters with passive radiators | 1x 6.5” subwoofer, 2x 1.1” tweeters, 2x passive radiator |
| Strap | No | Yes (detachable shoulder strap) |
Where the Ratings Come From
- JBL Boombox 4: reviews by JOY‘s 🎧3D🔈Audio-Show, Alan Ross and M1MTechChannel.
- W-King X20S: reviews by Mateusz Cholewa and Jagist.
This comparison is generated from the ratings, specifications and measurements on each product’s own page, and it updates when that data changes. How we rank explains how each rating is decided.
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