Short answer: the Ruimatech RM-10. It ranks #29 of 113 boombox speakers by sound quality, rated 3.8/5, at $159.99; the W-King X20 ranks #43, rated 3.5/5, and costs $229.99, so there is not much of a tradeoff to weigh.
In a side by side test the Ruimatech RM-10 sounded better in most ways. Its highs are cleaner, the mids are great and the overall clarity is more on point, which the reviewer put down to better tuning. It also reaches a little deeper in the bass.
The W-King X20 keeps more of its bass at 90 and 100 percent volume and plays a touch louder, so it still has the edge for flat out outdoor use. It also has an app with custom EQ and a larger claimed battery life, where the RM-10 has no app.
The RM-10 uses a three-way layout with an 80W woofer, two midranges and two tweeters plus dual passive radiators, rated IPX6 with a claimed 14 hours. Its build feels a bit cheaper, though the fabric wrap and thick plastic hold up well.
Buy the Ruimatech RM-10. It is rated higher for sound quality than the W-King X20 and costs less, so it is the default pick unless a specific strength of the other one matters more to you.
Battery life favors the W-King X20: rated for 24 hours against 14 hours for the Ruimatech RM-10.
Want more options? Browse the full Portable Bluetooth rankings.
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Specifications Side By Side
| Ruimatech RM-10 | W-King X20 | |
|---|---|---|
| Price | $159.99 | $229.99 after coupon |
| Ranked | #29 of 113 in Boombox Size Portable Bluetooth Speakers | #43 of 113 in Boombox Size Portable Bluetooth Speakers |
| Amplifier Power | 140W RMS (300W peak) | 330W peak / 200W RMS |
| Drivers | 80W woofer + 2x 20W midranges + 2x 10W tweeters + 2 passive radiators | 7.5” subwoofer + drivers |
| IP Rating | IPX6 | IPX6 |
| Battery Life | 14 hours at 30% volume (Manufacturer specified) | 24 hours (Manufacturer specified) |
| Power Bank | Yes (USB-C) | Yes (USB-A) |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.3 | 5.4 |
| TWS | Yes | Yes |
| App | No | Yes (W-King app) |
| Stereo | Partially | Yes |
| Omnidirectional | No | No |
| Strap | No | - |
| Aux Input | - | Yes |
| Bass Extension (-10dB) | - | ~42Hz |
| EQ | - | Yes (App + button modes) |
| Maximum SPL | - | 112dB (measured by Alan Ross Reviews) |
| MicroSD Playback | - | Yes |
| Power Input | - | USB-C |
| USB Playback | - | Yes |
| Bluetooth Codecs | - | SBC |
| Party Mode | - | No |
| Built-in Microphone | - | No |
| Dimensions | - | 19.9” x 8.5” x 10.6” (506 x 217 x 270 mm) |
| Weight | - | 15.9 lbs (7200 g) |
| Digital Aux Input | - | No |
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Videos and reviews that test both speakers side by side.
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