Short answer: the W-King X20S. It ranks #30 of 91 boombox speakers by sound quality, rated 3.8/5, at $150.99; the Zealot S78 ranks #90, rated 2.0/5, and costs $159.68, so there is little reason to consider the other one.
The W-King X20S is the better-sounding choice. 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.
The Zealot S78 is the lighter pick. A robust 9.7 lbs (4.4 kg) party speaker with claimed 120W RMS output, IP67 protection, USB-C charging, a power-bank function, aux, USB and microSD playback, TWS pairing and multiple EQ modes. At 9.7 lbs (4.4 kg) it weighs noticeably less than the W-King X20S at 13.8 lbs (6.25 kg). The tradeoff: At high volume, reviews report distortion and fluctuating level, so its headline power is more useful below its maximum setting.
Buy the W-King X20S. It is rated higher for sound quality than the Zealot S78 and costs less, which makes it the one to get unless you need something the other one does better.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Specifications Side By Side
| W-King X20S | Zealot S78 | |
|---|---|---|
| Price | $150.99 | $159.68 |
| Ranked | #30 of 91 in Boombox Size Portable Bluetooth Speakers | #90 of 91 in Boombox Size Portable Bluetooth Speakers |
| Amplifier Power | 140W RMS (180W peak) | 120W RMS / 150W peak |
| IP Rating | IPX7 | IP67 |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.4 | - |
| Built-in Microphone | Yes | No |
| Aux Input | Yes | Yes |
| USB Playback | Yes | Yes |
| MicroSD Playback | Yes | Yes |
| FM Tuner | Yes | - |
| Weight | 13.8 lbs (6.25 kg) | 9.7 lbs (4.4 kg) |
| Strap | Yes (detachable shoulder strap) | Yes (detachable shoulder strap) |
| TWS | Yes | Yes |
| Omnidirectional | No | No |
| Battery Life | - | 40 hours (Manufacturer specified) |
| Stereo | - | Yes |
| Bluetooth Codecs | - | SBC |
| App | - | No |
| EQ | - | Yes (multiple modes) |
| Party Mode | - | No |
| Power Bank | - | Yes (USB-A) |
| Power Input | - | USB-C |
| Dimensions | - | 16.1” x 6.6” x 7.3” (410 x 167 x 185 mm) |
| Drivers | - | 2x ~120mm (4.72”) woofers + 2x ~42mm tweeters + 2x passive radiators |
| Digital Aux Input | - | No |
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
Zealot S78: $159.68 Amazon AliExpress eBay
Pros: A robust 4.4kg party speaker with claimed 120W RMS output, IP67 protection, USB-C charging, a power-bank function, aux, USB and microSD playback, TWS pairing and multiple EQ modes. Reviews find it very loud with useful bass and long claimed battery life, making it a credible choice for outdoor gatherings.
Cons: At high volume, reviews report distortion and fluctuating level, so its headline power is more useful below its maximum setting. It has no app-based EQ, and the bass and midrange refinement do not match better-established boombox speakers; assess its sound in person if tonal accuracy matters.
Full Zealot S78 review and specifications →
| Amplifier Power | 120W RMS / 150W peak |
|---|---|
| App | No |
| Aux Input | Yes |
| Battery Life | 40 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 16.1” x 6.6” x 7.3” (410 x 167 x 185 mm) |
| Drivers | 2x ~120mm (4.72”) woofers + 2x ~42mm tweeters + 2x passive radiators |
| EQ | Yes (multiple modes) |
| IP Rating | IP67 |
| MicroSD Playback | Yes |
| Omnidirectional | No |
| Party Mode | No |
| Power Bank | Yes (USB-A) |
| Power Input | USB-C |
| Stereo | Yes |
| Strap | Yes (detachable shoulder strap) |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 9.7 lbs (4.4 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Jay’s Straight Up Reviews & More: W-King X20 vs Zealot S78 Bluetooth Boombox Battle Outdoor Tailgater Special 🚗 Let the Whoopin’ Begin More from JaysStraightUpReviews →
- Jay’s Straight Up Reviews & More: DBSOARS F29 Max vs Zealot S78 🛜 (5B) Budget Bluetooth Boombox Basement Battle 🔊 Bass Modes Enabled
- Head-to-Head Comparisons