Short answer: the W-King D20 if sound quality matters most, the Zealot S78 if price matters most. The W-King D20 ranks #27 of 73 boombox speakers at $193. The Zealot S78 ranks #73 at $159.68, $33.32 cheaper.
What the W-King D20 offers: Comes with 2 wireless microphones Watch for: Rising frequency response but upper treble rolled off, 700hz and 1.2khz peaks
What the Zealot S78 offers: 120W RMS output with 150W peak power, exceptional 40-hour battery life, power bank function, IP67 waterproof, EQ with multiple modes, dual woofers with tweeters and passive radiators, MicroSD and USB playback, AUX input, TWS stereo pairing, USB-C charging Watch for: Gets distorted above 50%. Not much bass. Volume level fluctuates at high volume.
Buy the W-King D20 when sound quality outweighs the price for you, and the Zealot S78 when the price outweighs sound quality instead.
If sound quality matters at all to you, skip the Zealot S78. It ranks near the bottom of the 73 boombox speakers, so look higher up the list instead.
Specifications Side By Side
| W-King D20 | Zealot S78 | |
|---|---|---|
| Price | $193 | $159.68 |
| Ranked | #27 of 73 in Boombox Size Portable Bluetooth Speakers | #73 of 73 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 |
| Max Volume | 112dB | - |
| 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 Codecs | SBC | SBC |
| Party Mode | No | No |
| Built in Microphone | No | No |
| Output 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 | - | 40 hours (Manufacturer specified) |
Related Speaker Comparisons
A few more comparisons worth a look in the same class:
- Harman Kardon Onyx Studio 6 vs W-King X20
- Harman Kardon Onyx Studio 9 vs Soundcore Boom 2 Plus
- Earfun Uboom X vs W-King X20
- Zealot S95 vs W-King D20
- Harman Kardon Onyx Studio 8 vs W-King D20
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.
As an eBay Partner, we may be compensated if you make a purchase.
The Two Speakers In Full
W-King D20: $193 Aliexpress eBay
Pros: Comes with 2 wireless microphones
Cons: Rising frequency response but upper treble rolled off, 700hz and 1.2khz peaks
Full W-King D20 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 | 4.5" + 3.5" drivers + 1.2" tweeters |
| EQ | Yes (App + button modes) |
| IP Rating | IPX6 |
| Max Volume | 112dB |
| MicroSD Playback | Yes |
| Omnidirectional | No |
| Output Power | 200W |
| 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: Soundcore Boom 2 Plus Review - worst boombox speaker under $400? More from alanrossreviews →
- Alan Ross Reviews: pound for pound battle! WKing X20 D20 vs Stormbox Blast! OMG its a shocker!
- Alan Ross Reviews: W-King X20 JBL Boombox 3 killer! this should be illegal! - I was shocked!
- 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!!! 🤔😋
- 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
- Reddit Search for W-King D20 Review
- Head-to-Head Comparisons
Zealot S78: $159.68 Amazon Aliexpress eBay
Pros: 120W RMS output with 150W peak power, exceptional 40-hour battery life, power bank function, IP67 waterproof, EQ with multiple modes, dual woofers with tweeters and passive radiators, MicroSD and USB playback, AUX input, TWS stereo pairing, USB-C charging
Cons: Gets distorted above 50%. Not much bass. Volume level fluctuates at high volume.
Full Zealot S78 review and specifications →
| App | No |
|---|---|
| Aux Input | Yes |
| Battery Life | 40 hours (Manufacturer specified) |
| 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 |
| Output Power | 120W RMS / 150W peak |
| Party Mode | No |
| Power Bank | Yes (USB-A) |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 9.7 lbs / 4.4 kg |
- 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
- Reddit Search for Zealot S78 Review
- Head-to-Head Comparisons