Short answer: the W-King D10. It ranks #53 of 73 boombox speakers by sound quality at $99.99; the Zealot S78 ranks #73 and costs $159.68, which makes this an easy call rather than a real tradeoff.
What the W-King D10 offers: 70W RMS output with 120W peak power, exceptional 42-hour battery life, power bank function, IPX6 waterproof, 106dB max volume, EQ and bass boost, microphone input for karaoke, MicroSD card support, USB playback, TWS pairing Watch for: Upper bass boost, bass not that deep.
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 D10. It ranks higher for sound quality than the Zealot S78 and costs less, so the other one has nothing left to offer.
Skip the Zealot S78 if sound quality matters to you. It ranks near the bottom of the 73 boombox speakers.
Specifications Side By Side
| W-King D10 | Zealot S78 | |
|---|---|---|
| Price | $99.99 | $159.68 |
| Ranked | #53 of 73 in Boombox Size Portable Bluetooth Speakers | #73 of 73 in Boombox Size Portable Bluetooth Speakers |
| Aux Input | Yes | Yes |
| Aux Latency | 50ms | - |
| Bass Extension (-10dB) | 60Hz | - |
| Battery Life | 42 hours (Manufacturer specified) | 40 hours (Manufacturer specified) |
| IP Rating | IPX6 | IP67 |
| Bluetooth Latency | 133ms | - |
| Max Volume | 106dB | - |
| MicroSD Playback | Yes | Yes |
| Power Bank | Yes | Yes (USB-A) |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 7.9 lbs / 3.6 kg | 9.7 lbs / 4.4 kg |
| Bluetooth Codecs | SBC | SBC |
| App | No | No |
| EQ | Yes (bass boost + DSP) | Yes (multiple modes) |
| Party Mode | No | No |
| USB Playback | Yes | Yes |
| Built in Microphone | No | No |
| Power Input | USB-C | USB-C |
| FM Tuner | No | - |
| Microphone Input | Yes (Karaoke mode with echo effect) | - |
| Output Power | 120W max / 70W RMS | 120W RMS / 150W peak |
| Dimensions | Dimensions not found in search | 16.1" x 6.6" x 7.3" (410 x 167 x 185 mm) |
| Drivers | 2x 40mm drivers + passive radiator | 2x ~120mm (4.72") woofers + 2x ~42mm tweeters + 2x passive radiators |
| Digital Aux Input | No | No |
Related Speaker Comparisons
Other pairings from the same speaker class worth checking:
- W-King H10 vs W-King X10
- Harman Kardon Onyx Studio 6 vs W-King H10
- Soundcore Motion Boom+ vs W-King H10
- Zealot S95 vs W-King D10
- Harman Kardon Onyx Studio 8 vs W-King D10
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
W-King D10: $99.99 Amazon eBay
Pros: 70W RMS output with 120W peak power, exceptional 42-hour battery life, power bank function, IPX6 waterproof, 106dB max volume, EQ and bass boost, microphone input for karaoke, MicroSD card support, USB playback, TWS pairing
Cons: Upper bass boost, bass not that deep.
Full W-King D10 review and specifications →
| App | No |
|---|---|
| Aux Input | Yes |
| Aux Latency | 50ms |
| Bass Extension (-10dB) | 60Hz |
| Battery Life | 42 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Latency | 133ms |
| Built in Microphone | No |
| Digital Aux Input | No |
| Dimensions | Dimensions not found in search |
| Drivers | 2x 40mm drivers + passive radiator |
| EQ | Yes (bass boost + DSP) |
| FM Tuner | No |
| IP Rating | IPX6 |
| Max Volume | 106dB |
| MicroSD Playback | Yes |
| Microphone Input | Yes (Karaoke mode with echo effect) |
| Omnidirectional | No |
| Output Power | 120W max / 70W RMS |
| Party Mode | No |
| Power Bank | Yes |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 7.9 lbs / 3.6 kg |
- Reviews, Comparisons and Sound Samples
- Joy & Oluv’Sone: Earfun UBoom X vs W-King D10 - same price, same sound? More from Oluv’Sone →
- Alan Ross Reviews: Tribit Stormbox Blast or Soundcore Motion Boom Plus or W King D10? 🤪 More from alanrossreviews →
- Alan Ross Reviews: W-King D10 speaker vs the D8, D9 and X10 WKing speakers 👀
- Reddit Search for W-King D10 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