Short answer: the W-King X20S. Both are rated 3.8/5 for sound quality (#30 and #27 of 113 boombox speakers), and the W-King X20S costs $150.99 against $349.95 for the JBL Boombox 3, so with nothing between them on sound quality, price settles it.
The case for the JBL Boombox 3: A loud, fully waterproof boombox with a dedicated subwoofer, a 24 hour battery and power bank charging. The catch: Dips in mid bass range which makes the bass sound undefined, bass boosted, peaky at 700Hz, not quite as good mids and treble as the Blast.
The case for the W-King X20S: A lighter, waterproof boombox with clear mids, plenty of volume, FM radio and a handle plus shoulder strap. It has an adjustable EQ, which the JBL Boombox 3 lacks. Watch for: 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 W-King X20S. Both are rated the same for sound quality, and it costs $198.96 less than the JBL Boombox 3.
Want more options? Browse the full Portable Bluetooth rankings.
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 3 | W-King X20S | |
|---|---|---|
| Price | $349.95 | $150.99 |
| Ranked | #27 of 113 in Boombox Size Portable Bluetooth Speakers | #30 of 113 in Boombox Size Portable Bluetooth Speakers |
| Aux Input | Yes | Yes |
| Aux Latency | 25ms | - |
| Bass Extension (-10dB) | 43Hz | - |
| Battery Life | 24 hours (Manufacturer specified) | 24 hours (Manufacturer specified) |
| IP Rating | IP67 | IPX7 |
| Bluetooth Latency | 100ms | - |
| Maximum SPL | 110dB (measured by Alan Ross Reviews) | - |
| Party Mode | Yes (PartyBoost up to 100 speakers) | - |
| Power Input | AC Power cable | USB-C |
| Stereo | Yes | Partially |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 14.8 lbs (6.7 kg) | 13.8 lbs (6.25 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | - |
| App | No | Yes (W-KING) |
| EQ | No | Yes |
| Power Bank | Yes (USB-A) | - |
| USB Playback | No | Yes |
| Built-in Microphone | No | Yes |
| FM Tuner | No | Yes |
| Microphone Input | No | - |
| MicroSD Playback | No | Yes |
| Amplifier Power | 180W AC / 136W battery | 140W RMS (180W peak) |
| Dimensions | 19” x 10.1” x 7.9” (482 x 257 x 200 mm) | 7.6”H x 17.4”W x 9.4”D (192 x 442 x 240 mm) |
| Drivers | 1x 189mm subwoofer + 2x 81mm woofers + 2x 20mm tweeters | 1x 6.5” subwoofer, 2x 1.1” tweeters, 2x passive radiator |
| Digital Aux Input | No | - |
| Bluetooth Version | 5.3 | 5.4 |
| Strap | No | Yes (detachable shoulder strap) |
Where the Ratings Come From
- JBL Boombox 3: reviews by JOY‘s 🎧3D🔈Audio-Show, Oluv and Alan Ross.
- 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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