Short answer: the W-King X20, narrowly, for features and output. It is rated 200W RMS with 330W peak, 112dB max volume, IPX6 and a 24-hour battery that doubles as a power bank, though its response rises with rolled-off upper treble and peaks at 700Hz and 1.2kHz. The ZZA K8 is called completely insane value, but its very V-curve response can be harsh in the treble.
Buy the W-King X20. It is rated higher for sound quality, and the ZZA K8 is discontinued, so it is only available used.
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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 | ZZA K8 | |
|---|---|---|
| Price | $229.99 after coupon | $40 after clipped coupon, Discontinued |
| Ranked | #43 of 113 in Boombox Size Portable Bluetooth Speakers | #73 of 113 in Boombox Size Portable Bluetooth Speakers |
| App | Yes (W-King app) | No |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | ~42Hz | - |
| EQ | Yes (App + button modes) | No |
| IP Rating | IPX6 | IPX6 |
| Maximum SPL | 112dB (measured by Alan Ross Reviews) | - |
| MicroSD Playback | Yes | - |
| Power Bank | Yes (USB-A) | Yes (USB-A) |
| Power Input | USB-C | USB-C |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| USB Playback | Yes | No |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| Party Mode | No | No |
| Built-in Microphone | No | No |
| Amplifier Power | 330W peak / 200W RMS | - |
| Dimensions | 19.9” x 8.5” x 10.6” (506 x 217 x 270 mm) | - |
| Drivers | 7.5” subwoofer + drivers | 8” woofer + tweeters |
| Weight | 15.9 lbs (7200 g) | 6.8 lbs (3.1 kg) |
| Digital Aux Input | No | No |
| Battery Life | 24 hours (Manufacturer specified) | ~30 hours (Manufacturer specified) |
| Bluetooth Version | 5.4 | - |
| Outputs | - | Aux |
| Microphone Input | - | Yes |
| Wireless Microphones | - | Yes 2 Included |
| FM Tuner | - | No |
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