Short answer: the Soundcore Motion Boom+. It ranks #47 of 73 boombox speakers by sound quality at $140; the Zealot S78 ranks #73 and costs $159.68, which makes this an easy call rather than a real tradeoff.
What the Soundcore Motion Boom+ offers: 80W stereo from dual 30W woofers + dual 10W tweeters with titanium drivers for treble clarity. 13,400mAh battery for 20 hours (12-15 at high volume). IP67 waterproof, floats, rugged build inspires confidence. Bluetooth 5.3 multipoint pairing, Soundcore app EQ, PartyCast 2.0 mode. USB-C input, USB-A output for powerbank. Watch for: Default presets are all warm sounding with rolled off treble. Will need a custom EQ to get closer to neutral. A shrill sounding 6khz peak comes out when volume is above about 60%. Not much deeper bass than a Motion Boom and a lot less deep bass than other speakers in the class.
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 Soundcore Motion Boom+. It ranks higher for sound quality than the Zealot S78 and costs less, so there is no real case for the other one.
The Zealot S78 is not a sound-quality pick. It sits near the bottom of the 73 boombox speakers; there are better options higher up.
There is a real battery-life gap here: the Zealot S78 is rated for 40 hours, the Soundcore Motion Boom+ only 20 hours.
Specifications Side By Side
| Soundcore Motion Boom+ | Zealot S78 | |
|---|---|---|
| Price | $140 after $40 coupon, Discontinued | $159.68 |
| Ranked | #47 of 73 in Boombox Size Portable Bluetooth Speakers | #73 of 73 in Boombox Size Portable Bluetooth Speakers |
| App | Yes (Soundcore app) | No |
| Aux Input | Yes | Yes |
| Aux Latency | 17ms | - |
| Bass Extension (-10dB) | 52Hz | - |
| Battery Life | 20 hours (Manufacturer specified) | 40 hours (Manufacturer specified) |
| EQ | Yes (App EQ) | Yes (multiple modes) |
| Bluetooth Latency | 33ms | - |
| Max Volume | 108dB | - |
| Party Mode | Yes (PartyCast up to 100 speakers) | No |
| Power Bank | Yes (USB-A, 5V/2.1A) | Yes (USB-A) |
| Power Input | USB-C | USB-C |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 5.3 lbs / 2.4 kg | 9.7 lbs / 4.4 kg |
| Bluetooth Codecs | SBC | SBC |
| USB Playback | No | Yes |
| Built in Microphone | No | No |
| IP Rating | IP67 | IP67 |
| Bluetooth Version | 5.3 | - |
| Output Power | 80W | 120W RMS / 150W peak |
| Dimensions | 15.1" x 5.1" x 7.7" (384 x 130 x 196 mm) | 16.1" x 6.6" x 7.3" (410 x 167 x 185 mm) |
| Drivers | 30W: Dual drivers | 2x ~120mm (4.72") woofers + 2x ~42mm tweeters + 2x passive radiators |
| Discontinued | Yes | - |
| Digital Aux Input | No | No |
| MicroSD Playback | - | Yes |
Related Speaker Comparisons
Other pairings from the same speaker class worth checking:
- JBL Partybox Encore Essential 2 vs ZZA K8
- Zealot ZE41 vs ZZA K8
- Tribit Stormbox Blast 2 vs ZZA K8
- Zealot S95 vs Soundcore Motion Boom+
- Harman Kardon Onyx Studio 8 vs Soundcore Motion Boom+
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
Soundcore Motion Boom+: $140 after $40 coupon, Discontinued Amazon eBay
Pros: 80W stereo from dual 30W woofers + dual 10W tweeters with titanium drivers for treble clarity. 13,400mAh battery for 20 hours (12-15 at high volume). IP67 waterproof, floats, rugged build inspires confidence. Bluetooth 5.3 multipoint pairing, Soundcore app EQ, PartyCast 2.0 mode. USB-C input, USB-A output for powerbank.
Cons: Default presets are all warm sounding with rolled off treble. Will need a custom EQ to get closer to neutral. A shrill sounding 6khz peak comes out when volume is above about 60%. Not much deeper bass than a Motion Boom and a lot less deep bass than other speakers in the class. Discontinued.
Full Soundcore Motion Boom+ review and specifications →
| App | Yes (Soundcore app) |
|---|---|
| Aux Input | Yes |
| Aux Latency | 17ms |
| Bass Extension (-10dB) | 52Hz |
| Battery Life | 20 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Latency | 33ms |
| Bluetooth Version | 5.3 |
| Built in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 15.1" x 5.1" x 7.7" (384 x 130 x 196 mm) |
| Discontinued | Yes |
| Drivers | 30W: Dual drivers |
| EQ | Yes (App EQ) |
| IP Rating | IP67 |
| Max Volume | 108dB |
| Omnidirectional | No |
| Output Power | 80W |
| Party Mode | Yes (PartyCast up to 100 speakers) |
| Power Bank | Yes (USB-A, 5V/2.1A) |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| USB Playback | No |
| Weight | 5.3 lbs / 2.4 kg |
- Links
- Reviews, Comparisons and Sound Samples
- Joy & Oluv’Sone: Soundcore Motion Boom Plus & Earfun UBoom X - sound test 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: Tribit Stormbox Blast Review vs Soundcore Motion Boom Plus - cheap bass!
- DLX Willington: Tough Game! Tribit Stormbox Blast vs Soundcore Motion Boom Plus Binaural sound samples More from DLXWillington →
- Reddit Search for Soundcore Motion Boom+ Review
- Head-to-Head Comparisons
- Soundcore Motion Boom+ vs JBL Boombox
- Soundcore Motion Boom+ vs Sony SRS-XG500
- Soundcore Motion Boom+ vs JBL Partybox On the Go
- Soundcore Motion Boom+ vs Soundcore Rave Party 2
- Soundcore Motion Boom+ vs W-King H10
- Soundcore Motion Boom+ vs W-King D10
- Soundcore Motion Boom+ vs Sony ULT Field 7
- Soundcore Motion Boom+ vs Turtlebox Grande
- See all 47 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