Short answer: the Zealot S89 on measured sound quality, the W-King X20 on price. The Zealot S89 ranks #16 of 73 boombox speakers at $246.99. The W-King X20 ranks #28 at $219.98, $27.01 cheaper.
What the Zealot S89 offers: A great value for the bass performance, play time and max volume in the boombox class. Likely the same internals as the Zealot ZE21 Watch for: On the heavy side. A little rolled off up top and not that balanced through the rest of the range. Clarity isn’t as good as better speakers. Bass EQ is bloated and muddy sounding
What the W-King X20 offers: 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 Watch for: Rising frequency response but upper treble rolled off, 700hz and 1.2khz peaks
Buy the Zealot S89 when sound quality outweighs the price for you, and the W-King X20 when the price outweighs sound quality instead.
Specifications Side By Side
| Zealot S89 | W-King X20 | |
|---|---|---|
| Price | $246.99 | $219.98 after coupon |
| Ranked | #16 of 73 in Boombox Size Portable Bluetooth Speakers | #28 of 73 in Boombox Size Portable Bluetooth Speakers |
| App | No | Yes (W-King app) |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | 36Hz | ~42Hz |
| Battery Life | 40 hours (Manufacturer specified) | - |
| EQ | Yes (multiple modes) | Yes (App + button modes) |
| IP Rating | IPX6 | IPX6 |
| Bluetooth Codecs | SBC | SBC |
| MicroSD Playback | Yes | Yes |
| Party Mode | Yes (PartyAdd up to 100 speakers) | No |
| Power Input | USB-C | USB-C |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 16.1 lbs / 7.3 kg | 15.9 lbs / 7200 g |
| Power Bank | Yes (USB-A + USB-C) | Yes (USB-A) |
| USB Playback | Yes | Yes |
| Built in Microphone | No | No |
| Output Power | 250W | 330W peak / 200W RMS |
| Dimensions | 21.2" x 10.4" x 9.4" (538 x 265 x 240 mm) | 19.9" x 8.5" x 10.6" (506 x 217 x 270 mm) |
| Drivers | 130W subwoofer + 2x 40mm drivers + 2x tweeters | 7.5" subwoofer + drivers |
| Digital Aux Input | No | No |
| Max Volume | - | 112dB |
Related Speaker Comparisons
Other pairings from the same speaker class worth checking:
- Zealot PT21 vs Zealot ZE21
- Zealot ZE21 vs W-King H10
- JBL Partybox Encore vs Zealot ZE21
- Zealot ZE21 vs W-King X20
- Zealot PT21 vs Zealot S89
Prices on this page were last checked August 27, 2026 at 10:09 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: $246.99 Amazon Aliexpress eBay
Pros: A great value for the bass performance, play time and max volume in the boombox class. Likely the same internals as the Zealot ZE21
Cons: On the heavy side. A little rolled off up top and not that balanced through the rest of the range. Clarity isn’t as good as better speakers. Bass EQ is bloated and muddy sounding
Full Zealot S89 review and specifications →
| App | No |
|---|---|
| Aux Input | Yes |
| Bass Extension (-10dB) | 36Hz |
| Battery Life | 40 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| 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 |
| Output Power | 250W |
| Party Mode | Yes (PartyAdd up to 100 speakers) |
| Power Bank | Yes (USB-A + USB-C) |
| Power Input | USB-C |
| Stereo | Yes |
| 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 →
- Reddit Search for Zealot S89 Review
- Head-to-Head Comparisons
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- Zealot S89 vs Harman Kardon Onyx Studio 7
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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
Cons: Rising frequency response but upper treble rolled off, 700hz and 1.2khz peaks
Full W-King X20 review and specifications →
| App | Yes (W-King app) |
|---|---|
| Aux Input | Yes |
| Bass Extension (-10dB) | ~42Hz |
| Bluetooth Codecs | SBC |
| 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 |
| Max Volume | 112dB |
| MicroSD Playback | Yes |
| Omnidirectional | No |
| Output Power | 330W peak / 200W RMS |
| 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 →
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- 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!!!
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- Jay’s Straight Up Reviews & More: W-King X20 vs Zealot S78 Bluetooth Boombox Battle Outdoor Tailgater Special 🚗 Let the Whoopin’ Begin
- Reddit Search for W-King X20 Review
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