Short answer: the EcoXGear Defender on measured sound quality, the Zealot S78 on price. The EcoXGear Defender ranks #59 of 75 boombox speakers at $249.99. The Zealot S78 ranks #75 at $159.68, $90.31 cheaper.
What the EcoXGear Defender offers: A rugged 4.54kg outdoor speaker with IP67 protection, a floating design, a flashlight, bottle opener, aux input, USB-C power-bank output and claimed 25-hour battery life. Independent testing found it gets very loud for its size, while its three ecoEQ presets let you choose a bass-heavy default, a more balanced indoor mode or a brighter outdoor mode. Watch for: Its single front-facing driver layout has narrow dispersion: clarity and detail drop noticeably when you move off-axis, and the soundstage is limited. The default setting can be over-bassy at lower volumes, while there is no app, precise EQ, battery indicator or multi-speaker party mode.
What the Zealot S78 offers: 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. Watch for: 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.
Buy the EcoXGear Defender when sound quality outweighs the price for you, and the Zealot S78 when the price outweighs sound quality instead.
Neither of these is a sound-quality pick. Look higher up the 75 boombox speakers if that is what you are optimizing for.
There is a real battery-life gap here: the Zealot S78 is rated for 40 hours, the EcoXGear Defender only 25 hours.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Specifications Side By Side
| EcoXGear Defender | Zealot S78 | |
|---|---|---|
| Price | $249.99 | $159.68 |
| Ranked | #59 of 75 in Boombox Size Portable Bluetooth Speakers | #75 of 75 in Boombox Size Portable Bluetooth Speakers |
| Battery Life | 25 hours (Manufacturer specified) | 40 hours (Manufacturer specified) |
| Stereo | No | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| App | No | No |
| EQ | Yes | Yes (multiple modes) |
| Party Mode | No | No |
| Power Bank | Yes (USB-C, 5V/2.1A) | Yes (USB-A) |
| USB Playback | No | Yes |
| Built-in Microphone | Yes | No |
| Power Input | USB-C | USB-C |
| FM Tuner | No | - |
| IP Rating | IP67 | IP67 |
| Weight | 10 lbs (4.54 kg) | 9.7 lbs (4.4 kg) |
| Bluetooth Version | 5.1 | - |
| Amplifier Power | 100W | 120W RMS / 150W peak |
| Aux Input | Yes | Yes |
| Dimensions | 6.7" x 15.4" x 9.6" (170.2 x 391.2 x 243.8 mm) | 16.1" x 6.6" x 7.3" (410 x 167 x 185 mm) |
| Drivers | 52mm full-range driver | 2x ~120mm (4.72") woofers + 2x ~42mm tweeters + 2x passive radiators |
| Digital Aux Input | No | No |
| MicroSD Playback | - | Yes |
Related Speaker Comparisons
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- EcoXGear Defender vs Tribit Stormbox Blast
- JBL Partybox Encore 2 vs EcoXGear Defender
- JBL Partybox Encore Essential 2 vs EcoXGear Defender
- EcoXGear Defender vs JBL Partybox Encore
- JBL Partybox Encore Essential vs EcoXGear Defender
Prices on this page were last checked September 16, 2026 at 12:41 AM 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
EcoXGear Defender: $249.99 Amazon eBay
Pros: A rugged 4.54kg outdoor speaker with IP67 protection, a floating design, a flashlight, bottle opener, aux input, USB-C power-bank output and claimed 25-hour battery life. Independent testing found it gets very loud for its size, while its three ecoEQ presets let you choose a bass-heavy default, a more balanced indoor mode or a brighter outdoor mode.
Cons: Its single front-facing driver layout has narrow dispersion: clarity and detail drop noticeably when you move off-axis, and the soundstage is limited. The default setting can be over-bassy at lower volumes, while there is no app, precise EQ, battery indicator or multi-speaker party mode.
Full EcoXGear Defender review and specifications →
| Amplifier Power | 100W |
|---|---|
| App | No |
| Aux Input | Yes |
| Battery Life | 25 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.1 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 6.7" x 15.4" x 9.6" (170.2 x 391.2 x 243.8 mm) |
| Drivers | 52mm full-range driver |
| EQ | Yes |
| FM Tuner | No |
| IP Rating | IP67 |
| Omnidirectional | No |
| Party Mode | No |
| Power Bank | Yes (USB-C, 5V/2.1A) |
| Power Input | USB-C |
| Stereo | No |
| TWS | Yes |
| USB Playback | No |
| Weight | 10 lbs (4.54 kg) |
- Links
- Reviews, Comparisons and Sound Samples
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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 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 |
| 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
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