Short answer: the W-King X20. It ranks #30 out of 75 boombox speakers against the Yeahbox’s #40, and it costs a bit less too, so there is little reason to consider the Yeahbox instead.
On paper the two look similar, but the X20 comes with more independent verification. Both claim 200W RMS output, with the X20 rated at 330W peak against 300W peak for the Yeahbox’s 3-way, 5-driver array. The X20’s cons are specific and measured: a rising frequency response with the upper treble rolled off and peaks around 700Hz and 1.2kHz. The Yeahbox’s cons are more fundamental, noting it’s a budget import brand with limited independent testing where specs are manufacturer-claimed, and its water resistance rating is reported inconsistently across listings, IPX6 on Yeahbox’s own site versus IP66 or IP67 elsewhere.
Feature-wise the two trade blows. The X20 adds a 7.5-inch subwoofer, a USB-A power bank function, and button-based EQ modes alongside app control. The Yeahbox counters with fast 60W USB-C charging for its 111Wh battery and a true 3-way driver layout with dedicated midrange drivers, which the X20’s simpler subwoofer-plus-drivers layout doesn’t specify in the same detail.
Buy the W-King X20 for the better-documented performance, a consistently reported water rating, and a slightly lower price.
Buy the Yeahbox Sonic Boom Max 3 only if its 3-way driver layout or fast charging specifically appeal to you, and you’re comfortable with a less independently verified spec sheet.
Want more options? Browse the full Portable Bluetooth rankings.
Specifications Side By Side
| W-King X20 | Yeahbox Sonic Boom Max 3 | |
|---|---|---|
| Price | $219.98 after coupon | $228.99 |
| Ranked | #30 of 75 in Boombox Size Portable Bluetooth Speakers | #40 of 75 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 |
| Power Bank | Yes (USB-A) | - |
| Power Input | USB-C | USB-C |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| USB Playback | Yes | Yes |
| Bluetooth Codecs | SBC | SBC (inferred; additional codecs unverified) |
| Party Mode | No | - |
| Built-in Microphone | No | - |
| Amplifier Power | 330W peak / 200W RMS | 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 | 7.5" subwoofer + drivers | 189x114mm woofer, 2x 89mm midrange, 2x 38mm tweeters |
| Weight | 15.9 lbs (7200 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 | 5.4 | 5.3 |
| Lights | - | Yes |
Related Speaker Comparisons
More worthwhile head-to-heads for W-King X20:
- Earfun Uboom X vs W-King X20
- Tribit Stormbox Blast vs W-King X20
- Harman Kardon Go + Play 3 vs W-King X20
- JBL Partybox Encore 2 vs W-King X20
- JBL Partybox Encore Essential 2 vs W-King X20
Prices on this page were last checked September 22, 2026 at 5:11 AM 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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The Two Speakers In Full
W-King X20: $219.98 after coupon Amazon eBay
Pros: 200W RMS output with 330W peak power, 112dB max volume, exceptional 24-hour battery life with power bank, IPX6 waterproof, EQ with app control and button modes, 7.5-inch subwoofer, Bluetooth 5.3, dual pairing, MicroSD and USB playback, AUX input, TWS stereo mode with 240W combined. Measured bass extension of ~42Hz (-10dB).
Cons: Rising frequency response but upper treble rolled off, 700Hz and 1.2kHz peaks
Full W-King X20 review and specifications →
| Amplifier Power | 330W peak / 200W RMS |
|---|---|
| App | Yes (W-King app) |
| Aux Input | Yes |
| Bass Extension (-10dB) | ~42Hz |
| Battery Life | 24 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.4 |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 19.9" x 8.5" x 10.6" (506 x 217 x 270 mm) |
| Drivers | 7.5" subwoofer + drivers |
| EQ | Yes (App + button modes) |
| IP Rating | IPX6 |
| Maximum SPL | 112dB (measured by Alan Ross Reviews) |
| MicroSD Playback | Yes |
| Omnidirectional | No |
| Party Mode | No |
| Power Bank | Yes (USB-A) |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 15.9 lbs (7200 g) |
- Links
- Reviews, Comparisons and Sound Samples
- Alan Ross Reviews: Soundcore Boom 2 Plus Review - worst boombox speaker under $400? More from alanrossreviews →
- Alan Ross Reviews: pound for pound battle! WKing X20 D20 vs Stormbox Blast! OMG its a shocker!
- Alan Ross Reviews: W-King X20 JBL Boombox 3 killer! this should be illegal! - I was shocked!
- Jagist reviews: W-king X20 Vs Jbl Encore!!! 😁😁😁 More from Jagistreviews →
- Jagist reviews: W-king X20 Vs Skullcandy Barrel XT!!! 🤔😋
- Mateusz Cholewa: Soundcore RAVE 3 🤗v🆚s W- KING X20🎶 More from Mateusz Cholewa →
- Jay’s Straight Up Reviews & More: New! W-King X20 vs JBL Boombox 3 🛜 Head to Head 🔋Battery Powered 📊Custom EQ - Links In Description More from JaysStraightUpReviews →
- Jay’s Straight Up Reviews & More: W-King X20 vs Tribit Stormbox Blast 🍿 Garage Battle of Boombox Speakers 🍻Custom & Standard EQ’s
- Jagist reviews: LG xboom Stage 301 Vs W-king X20!!!
- Techder Audios: W-king X20 VS Zealot S95 DEEP BASS VS DEEPER & LOUDER BASS?! More from techderaudios →
- Jagist reviews: LG xboom Stage 301 Vs W-king X20!!!
- Jagist reviews: W-king X20 Vs Gemini GRV-650L!!! 😍😍😍
- Jagist reviews: Bugani Boost Max Vs W-king X20!!! 😍😍😍
- Jay’s Straight Up Reviews & More: W-King X20 vs Zealot S78 Bluetooth Boombox Battle Outdoor Tailgater Special 🚗 Let the Whoopin’ Begin
- Head-to-Head Comparisons
Yeahbox Sonic Boom Max 3: $228.99 Amazon eBay
Pros: A large 3-way, 5-driver party speaker with claimed 200W RMS output, a 111Wh battery, USB-C fast charging, app EQ, TWS pairing, and aux, USB and microSD playback. Listener comparisons describe powerful bass, strong output and decent mids and highs for outdoor party use.
Cons: There is limited independent testing and the water/dust rating is reported inconsistently across listings. Listener comparisons find it less clear and refined than stronger boombox rivals, so its big bass and output are a better fit for parties than critical listening.
Full Yeahbox Sonic Boom Max 3 review and specifications →
| Amplifier Power | 200W RMS / 300W Peak |
|---|---|
| App | Yes |
| Aux Input | Yes |
| Battery Life | 111Wh (14.8V/7,500mAh) (Manufacturer specified) |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) |
| Bluetooth Version | 5.3 |
| Digital Aux Input | No |
| Dimensions | 20.7" x 8.3" x 10.6" (525 x 210 x 268 mm) |
| Drivers | 189x114mm woofer, 2x 89mm midrange, 2x 38mm tweeters |
| EQ | Yes |
| IP Rating | IPX6 |
| Lights | Yes |
| MicroSD Playback | Yes |
| Omnidirectional | No |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 16.8 lbs (7.64 kg) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Yeahbox Sonic Boom Max 3 vs Skullcandy Barrel
- Yeahbox Sonic Boom Max 3 vs Sony ULT Field 7
- Yeahbox Sonic Boom Max 3 vs Bugani Boost Max
- Yeahbox Sonic Boom Max 3 vs Soundcore Rave Party 2
- Yeahbox Sonic Boom Max 3 vs Tronsmart Bang Max
- Yeahbox Sonic Boom Max 3 vs Onn Medium Party Speaker Gen 2
- Yeahbox Sonic Boom Max 3 vs JBL Partybox On the Go
- Yeahbox Sonic Boom Max 3 vs B&O Beolit 20
- See all 52 comparisons