Short answer: the W-King D20 if the bundled microphones matter, since the Yeahbox’s specs are manufacturer-claimed. The D20 includes two wireless microphones, but its frequency response rises with the upper treble rolled off and peaks at 700Hz and 1.2kHz. The Sonic Boom Max 3 lists 200W RMS (300W peak) in a true 3-way, 5-driver array, yet it is a budget brand with limited independent testing.
Buy the W-King D20. It is rated higher for sound quality than the Yeahbox Sonic Boom Max 3 and costs less, which makes it the one to get unless you need something the other one does better.
Want more options? Browse the full Portable Bluetooth rankings.
A loud stereo party speaker with two wireless microphones, a 24 hour battery and water resistance.
A large party speaker with powerful bass, a big fast charging battery and app EQ for outdoor parties.
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 D20 | Yeahbox Sonic Boom Max 3 | |
|---|---|---|
| Price | $193 | $228.99 |
| Ranked | #41 of 113 in Boombox Size Portable Bluetooth Speakers | #59 of 113 in Boombox Size Portable Bluetooth Speakers |
| App | Yes (W-King app) | Yes |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | ~42Hz | - |
| EQ | Yes (App + button modes) | Yes |
| IP Rating | IPX6 | IPX6 |
| Maximum SPL | 112dB (measured by Alan Ross Reviews) | - |
| MicroSD Playback | Yes | Yes |
| Wireless Microphones | Yes | - |
| Power Bank | Yes | - |
| Power Input | USB-C | USB-C |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| USB Playback | Yes | Yes |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC (inferred; additional codecs unverified) |
| Party Mode | No | - |
| Built-in Microphone | No | - |
| Amplifier Power | 200W | 200W RMS / 300W Peak |
| Dimensions | 19.9” x 8.5” x 10.6” (506 x 217 x 270 mm) | 20.7” x 8.3” x 10.6” (525 x 210 x 268 mm) |
| Drivers | 4.5” + 3.5” drivers + 1.2” tweeters | 189x114mm woofer, 2x 89mm midrange, 2x 38mm tweeters |
| Weight | 14.3 lbs (6500 g) | 16.8 lbs (7.64 kg) |
| Digital Aux Input | No | No |
| Battery Life | 24 hours (Manufacturer specified) | 111Wh (14.8V/7,500mAh) (Manufacturer specified) |
| Bluetooth Version | 5.3 | 5.3 |
| Lights | - | Yes |
| Strap | - | No |
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