Short answer: the W-King X20S. It ranks #30 of 91 boombox speakers by sound quality, rated 3.8/5, at $150.99; the onn Pro X Large Boom Boombox ranks #44, rated 3.4/5, and costs $199, which makes this an easy call rather than a real tradeoff.
The W-King X20S is the better-sounding pick. Clearer and smoother than the larger W-King X20 at about half its size and weight, and in side by side tests it held its own against the Harman Kardon Go + Play 3, with nicer, more exposed mids and more volume. Watch for: Less bass and depth than the X20 and about 3dB quieter, and at maximum volume its mids and highs start to drown out the bass.
The case for the onn Pro X Large Boom Boombox: High rated power for the price at 180W RMS (540W peak). The catch: Bass not as deep as higher ranked speakers like the JBL Boombox 3, JBL Boombox 4, or Tribit Stormbox Blast.
Buy the W-King X20S. It is rated higher for sound quality than the onn Pro X Large Boom Boombox and costs less, so only choose the other one for a particular feature it does better.
Want more options? Browse the full Portable Bluetooth rankings.
Specifications Side By Side
| W-King X20S | onn Pro X Large Boom Boombox | |
|---|---|---|
| Price | $150.99 | $199.00 |
| Ranked | #30 of 91 in Boombox Size Portable Bluetooth Speakers | #44 of 91 in Boombox Size Portable Bluetooth Speakers |
| Amplifier Power | 140W RMS (180W peak) | 180W RMS (540W peak) |
| IP Rating | IPX7 | IP67 |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.4 | 5.4 (Manufacturer specified) |
| Built-in Microphone | Yes | - |
| Aux Input | Yes | Yes |
| USB Playback | Yes | - |
| MicroSD Playback | Yes | - |
| FM Tuner | Yes | - |
| Weight | 13.8 lbs (6.25 kg) | 17.2 lbs (7.8 kg) |
| Strap | Yes (detachable shoulder strap) | - |
| TWS | Yes | Yes |
| Omnidirectional | No | No |
| Battery Life | - | 20 hours (Manufacturer specified) |
| Dimensions | - | 20.1” x 10.3” x 9” (510 x 261 x 228 mm) |
| Drivers | - | 5 speakers |
| Power Input | - | AC Power cord |
| Removable Battery | - | No |
| Party Mode | - | Yes (Auracast) |
| Power Bank | - | Yes (USB-A, 5V/2A) |
| Frequency Response | - | 50Hz - 20kHz (Manufacturer specified) |
| Bluetooth Codecs | - | SBC (inferred; additional codecs unverified) |
| Lights | - | Yes |
| Digital Aux Input | - | No |
| EQ | - | Yes (Bass Boost) |
Related Speaker Comparisons
More worthwhile head-to-heads for W-King X20S:
- Tribit Stormbox Blast vs W-King X20S
- Harman Kardon Go + Play 3 vs W-King X20S
- JBL Partybox Encore 2 vs W-King X20S
- JBL PartyBox On-The-Go 2 Plus vs W-King X20S
- JBL Partybox Encore Essential 2 vs W-King X20S
Prices on this page were last checked October 4, 2026 at 9:58 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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The Two Speakers In Full
W-King X20S: $150.99 AliExpress W-King eBay
Pros: Clearer and smoother than the larger W-King X20 at about half its size and weight, and in side by side tests it held its own against the Harman Kardon Go + Play 3, with nicer, more exposed mids and more volume. 140W RMS (180W peak), IPX7, Bluetooth 5.4, a built-in microphone, TF card, USB and aux playback, FM radio, a carry handle and a shoulder strap.
Cons: Less bass and depth than the X20 and about 3dB quieter, and at maximum volume its mids and highs start to drown out the bass. With a flat EQ the bass is cut off, so it needs the bass boost. The JBL PartyBox Encore Essential 2 sounded better in a direct comparison. Sold direct from W-King in the US.
Full W-King X20S review and specifications →
| Amplifier Power | 140W RMS (180W peak) |
|---|---|
| Aux Input | Yes |
| Bluetooth | Yes |
| Bluetooth Version | 5.4 |
| Built-in Microphone | Yes |
| FM Tuner | Yes |
| IP Rating | IPX7 |
| MicroSD Playback | Yes |
| Omnidirectional | No |
| Strap | Yes (detachable shoulder strap) |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 13.8 lbs (6.25 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Jagist reviews: W-king X20 Vs W-king X20S!!! More from Jagistreviews →
- Jagist reviews: W-king X20s Vs Harman Kardon Go Plus Play 3!!!
- Mateusz Cholewa: 140W W-KING X20S vs 160W HK Go Plus Play 3 More from Mateusz Cholewa →
- Jagist reviews: Jbl Encore Essential 2 Vs W-king X20s!!!
- Jagist reviews: W-king X20s Vs Tribit Stormbox Blast!!!
- Head-to-Head Comparisons
onn Pro X Large Boom Boombox: $199.00 Walmart eBay
Pros: High rated power for the price at 180W RMS (540W peak). IP67 waterproof design for indoor and outdoor use. 20 hour battery life. 6 LED lighting modes. Party Mode supports multiple devices.
Cons: Bass not as deep as higher ranked speakers like the JBL Boombox 3, JBL Boombox 4, or Tribit Stormbox Blast. Frequency response isn’t as smooth as the top ranked speakers. Charges via AC cable rather than USB-C. Only available in the United States and Canada.
Full onn Pro X Large Boom Boombox review and specifications →
| Amplifier Power | 180W RMS (540W peak) |
|---|---|
| Aux Input | Yes |
| Battery Life | 20 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) |
| Bluetooth Version | 5.4 (Manufacturer specified) |
| Digital Aux Input | No |
| Dimensions | 20.1” x 10.3” x 9” (510 x 261 x 228 mm) |
| Drivers | 5 speakers |
| EQ | Yes (Bass Boost) |
| Frequency Response | 50Hz - 20kHz (Manufacturer specified) |
| IP Rating | IP67 |
| Lights | Yes |
| Omnidirectional | No |
| Party Mode | Yes (Auracast) |
| Power Bank | Yes (USB-A, 5V/2A) |
| Power Input | AC Power cord |
| Removable Battery | No |
| TWS | Yes |
| Weight | 17.2 lbs (7.8 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- onn Pro X Large Boom Boombox vs Teufel Boomster 2021
- onn Pro X Large Boom Boombox vs JBL Authentics 300
- onn Pro X Large Boom Boombox vs JBL Boombox 2
- onn Pro X Large Boom Boombox vs W-King X20
- onn Pro X Large Boom Boombox vs Soundcore Boom 2 Plus
- onn Pro X Large Boom Boombox vs Zealot S95
- onn Pro X Large Boom Boombox vs LG Xboom Stage 301
- onn Pro X Large Boom Boombox vs Sony ULT Field 7
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