Short answer: the Zealot S89. It ranks #19 of 89 boombox speakers by sound quality, rated 4.0/5, at $259.99. The W-King X20S ranks #29, rated 3.8/5, at $150.99, $109 cheaper, which does not close the gap in sound quality.
The case for the Zealot S89: A 7.3kg boombox with a claimed 36Hz bass extension, 40-hour battery life, IPX6 protection, USB-C charging, aux, USB and microSD playback, TWS and multi-speaker PartyAdd. Watch for: At high volume, listener reports describe the bass as loose or muddy and the overall balance as less clear than better boombox speakers.
What the W-King X20S does well: 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. The tradeoff: 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.
Buy the Zealot S89. It is rated higher for sound quality, and saving $109 with the W-King X20S does not make up for the sound-quality gap.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Specifications Side By Side
| Zealot S89 | W-King X20S | |
|---|---|---|
| Price | $259.99 | $150.99 |
| Ranked | #19 of 89 in Boombox Size Portable Bluetooth Speakers | #29 of 89 in Boombox Size Portable Bluetooth Speakers |
| App | No | - |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | 36Hz | - |
| Battery Life | 40 hours (Manufacturer specified) | - |
| EQ | Yes (multiple modes) | - |
| IP Rating | IPX6 | IPX7 |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | - |
| MicroSD Playback | Yes | Yes |
| Party Mode | Yes (PartyAdd up to 100 speakers) | - |
| Power Input | USB-C | - |
| Stereo | Yes | - |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 16.1 lbs (7.3 kg) | 13.8 lbs (6.25 kg) |
| Power Bank | Yes (USB-A + USB-C) | - |
| USB Playback | Yes | Yes |
| Built-in Microphone | No | Yes |
| Amplifier Power | 250W | 140W RMS (180W peak) |
| Dimensions | 21.2” x 10.4” x 9.4” (538 x 265 x 240 mm) | - |
| Drivers | 130W subwoofer + 2x 40mm drivers + 2x tweeters | - |
| Digital Aux Input | No | - |
| Bluetooth Version | 5.3 | 5.4 |
| Strap | No | Yes (detachable shoulder strap) |
| FM Tuner | - | Yes |
Related Speaker Comparisons
More top alternatives to Zealot S89:
- Tribit Stormbox Blast vs Zealot S89
- Harman Kardon Go + Play 3 vs Zealot S89
- JBL Partybox Encore 2 vs Zealot S89
- JBL PartyBox On-The-Go 2 Plus vs Zealot S89
- JBL Partybox Encore Essential 2 vs Zealot S89
Prices on this page were last checked September 30, 2026 at 2:57 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
Zealot S89: $259.99 Amazon AliExpress eBay
Pros: A 7.3kg boombox with a claimed 36Hz bass extension, 40-hour battery life, IPX6 protection, USB-C charging, aux, USB and microSD playback, TWS and multi-speaker PartyAdd. Listener comparisons find it capable of very high output and substantial bass for outdoor use. A great value for its bass, battery life and maximum volume. Measured bass extension of 36Hz (-10dB).
Cons: At high volume, listener reports describe the bass as loose or muddy and the overall balance as less clear than better boombox speakers. The heavy cabinet and basic finish also make it less polished for daily portability, while its multiple EQ modes cannot substitute for a genuinely neutral tuning.
Full Zealot S89 review and specifications →
| Amplifier Power | 250W |
|---|---|
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | 36Hz |
| Battery Life | 40 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.3 |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 21.2” x 10.4” x 9.4” (538 x 265 x 240 mm) |
| Drivers | 130W subwoofer + 2x 40mm drivers + 2x tweeters |
| EQ | Yes (multiple modes) |
| IP Rating | IPX6 |
| MicroSD Playback | Yes |
| Omnidirectional | No |
| Party Mode | Yes (PartyAdd up to 100 speakers) |
| Power Bank | Yes (USB-A + USB-C) |
| Power Input | USB-C |
| Stereo | Yes |
| Strap | No |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 16.1 lbs (7.3 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Oluv Patreon: Zealot S89 vs Yeahbox Boom Max3 - indoor listening test More from Oluv’Sone →
- Oluv Patreon: Zealot S89 vs Yeahbox Sonic Boom Max3 - outdoor test
- Dominik Reviews: Zealot S89 vs JBL Boombox 4 - JBL Alternative? Sound Test More from Dominik Reviews →
- Jagist reviews: Jbl Boombox 4 Vs Zealot S89!!! More from Jagistreviews →
- Techder Audios: ZEALOT S89 VS ZEALOT ZE01 EXTREME POWERFULL VS COMPACTER BASS PERFORMANCE! More from techderaudios →
- Head-to-Head Comparisons
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