Short answer: the W-King D20. It ranks #39 of 98 boombox speakers by sound quality, rated 3.6/5, at $193. The Zealot S78 ranks #97, rated 2.0/5, at $159.68, $33.32 cheaper, which does not close the gap in sound quality.
The W-King D20 is the better-sounding pick. Comes with 2 wireless microphones. Watch for: Rising frequency response but upper treble rolled off, 700Hz and 1.2kHz peaks.
The Zealot S78 is the longer-running, lighter option. 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. It is rated for 40 hours of battery against 24 for the W-King D20. At 9.7 lbs (4.4 kg) it weighs noticeably less than the W-King D20 at 14.3 lbs (6.5 kg). The catch: At high volume, reviews report distortion and fluctuating level, so its headline power is more useful below its maximum setting.
Buy the W-King D20. It is rated higher for sound quality, and the $33.32 saving on the Zealot S78 is not enough to make up the difference.
Want more options? Browse the full Portable Bluetooth rankings.
Specifications Side By Side
| W-King D20 | Zealot S78 | |
|---|---|---|
| Price | $193 | $159.68 |
| Ranked | #39 of 98 in Boombox Size Portable Bluetooth Speakers | #97 of 98 in Boombox Size Portable Bluetooth Speakers |
| App | Yes (W-King app) | No |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | ~42Hz | - |
| EQ | Yes (App + button modes) | Yes (multiple modes) |
| IP Rating | IPX6 | IP67 |
| Maximum SPL | 112dB (measured by Alan Ross Reviews) | - |
| MicroSD Playback | Yes | Yes |
| Wireless Microphones | Yes | - |
| Power Bank | Yes | Yes (USB-A) |
| Power Input | USB-C | USB-C |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| USB Playback | Yes | Yes |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| Party Mode | No | No |
| Built-in Microphone | No | No |
| Amplifier Power | 200W | 120W RMS / 150W peak |
| Dimensions | 19.9” x 8.5” x 10.6” (506 x 217 x 270 mm) | 16.1” x 6.6” x 7.3” (410 x 167 x 185 mm) |
| Drivers | 4.5” + 3.5” drivers + 1.2” tweeters | 2x ~120mm (4.72”) woofers + 2x ~42mm tweeters + 2x passive radiators |
| Weight | 14.3 lbs (6500 g) | 9.7 lbs (4.4 kg) |
| Digital Aux Input | No | No |
| Battery Life | 24 hours (Manufacturer specified) | 40 hours (Manufacturer specified) |
| Bluetooth Version | 5.3 | 5.3 |
| Strap | - | Yes (detachable shoulder strap) |
Related Speaker Comparisons
How W-King D20 compares with other leading options:
- Tribit Stormbox Blast vs W-King D20
- Harman Kardon Go + Play 3 vs W-King D20
- JBL Partybox Encore 2 vs W-King D20
- JBL Partybox Encore Essential 2 vs W-King D20
- JBL Partybox Encore vs W-King D20
Prices on this page were last checked October 12, 2026 at 4:13 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 D20: $193 AliExpress $193 eBay
Pros: Comes with 2 wireless microphones. Measured bass extension of ~42Hz (-10dB).
Cons: Rising frequency response but upper treble rolled off, 700Hz and 1.2kHz peaks
Full W-King D20 review and specifications →
| Released | Feb 2024 (2 years ago) |
|---|---|
| Amplifier Power | 200W |
| App | Yes (W-King app) |
| Aux Input | Yes |
| Bass Extension (-10dB) | ~42Hz |
| Battery Life | 24 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.3 |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 19.9” x 8.5” x 10.6” (506 x 217 x 270 mm) |
| Drivers | 4.5” + 3.5” drivers + 1.2” tweeters |
| 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 |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 14.3 lbs (6500 g) |
| Wireless Microphones | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- Alan Ross Reviews: pound for pound battle! WKing X20 D20 vs Stormbox Blast! OMG its a shocker! More from alanrossreviews →
- Alan Ross Reviews: W-King X20 JBL Boombox 3 killer! this should be illegal! - I was shocked!
- Alan Ross Reviews: Soundcore Boom 2 Plus Review - worst boombox speaker under $400?
- 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!!! More from Jagistreviews →
- Jagist reviews: W-king X20 Vs Jbl Encore!!! 😁😁😁
- Jagist reviews: W-king X20 Vs Skullcandy Barrel XT!!! 🤔😋
- Head-to-Head Comparisons
Zealot S78: $159.68 Amazon $159.68 AliExpress $91.38 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 →
| Released | May 2023 (3 years ago) |
|---|---|
| Amplifier Power | 120W RMS / 150W peak |
| App | No |
| Aux Input | Yes |
| Battery Life | 40 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.3 |
| 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: DBSOARS F29 Max vs Zealot S78 🛜 (5B) Budget Bluetooth Boombox Basement Battle 🔊 Bass Modes Enabled More from JaysStraightUpReviews →
- 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