Short answer: the Demerbox DB2 for better sound quality, the Zealot S78 for the lower price. The Demerbox DB2 ranks #51 of 75 boombox speakers at $400. The Zealot S78 ranks #75 at $159.68, $240.32 cheaper.
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.
What the Demerbox DB2 offers: 40+ hour battery life even at higher volumes (real-world: ~14 hrs with phone charging mixed in). Built from a Pelican case - nearly indestructible and waterproof (IP67). Multi-pair up to 6 units. Doubles as power bank and waterproof container. Watch for: Bass is not as deep as better speakers. Very overpriced.
Buy the Zealot S78 if the price matters more than sound quality. Buy the Demerbox DB2 if sound quality matters more than the price.
If sound quality matters at all to you, skip the Zealot S78. It ranks near the bottom of the 75 boombox speakers, so look higher up the list instead.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Specifications Side By Side
| Zealot S78 | Demerbox DB2 | |
|---|---|---|
| Price | $159.68 | $400 |
| Ranked | #75 of 75 in Boombox Size Portable Bluetooth Speakers | #51 of 75 in Boombox Size Portable Bluetooth Speakers |
| Aux Input | Yes | Yes |
| Battery Life | 40 hours (Manufacturer specified) | 40 hours (Manufacturer specified) |
| IP Rating | IP67 | IP67 |
| MicroSD Playback | Yes | - |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| Weight | 9.7 lbs (4.4 kg) | 5.4 lbs (2.47 kg) |
| Bluetooth Codecs | SBC | SBC |
| App | No | No |
| EQ | Yes (multiple modes) | No |
| TWS | Yes | Yes |
| Party Mode | No | No |
| Power Bank | Yes (USB-A) | Yes (USB-A + USB-C) |
| USB Playback | Yes | No |
| Built-in Microphone | No | No |
| Power Input | USB-C | AC Power brick |
| Amplifier Power | 120W RMS / 150W peak | 22W RMS |
| Dimensions | 16.1" x 6.6" x 7.3" (410 x 167 x 185 mm) | 10.6" x 9.7" x 6.9" (270 x 246 x 175 mm) |
| Drivers | 2x ~120mm (4.72") woofers + 2x ~42mm tweeters + 2x passive radiators | 2x 3" (76mm) aluminum cone full-range drivers |
| Digital Aux Input | No | No |
| FM Tuner | - | No |
Related Speaker Comparisons
How Demerbox DB2 compares with other leading options:
- Tribit Stormbox Blast vs Demerbox DB2
- JBL Partybox Encore 2 vs Demerbox DB2
- JBL Partybox Encore Essential 2 vs Demerbox DB2
- JBL Partybox Encore vs Demerbox DB2
- JBL Partybox Encore Essential vs Demerbox DB2
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
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
- Head-to-Head Comparisons
Demerbox DB2: $400 Amazon eBay
Pros: 40+ hour battery life even at higher volumes (real-world: ~14 hrs with phone charging mixed in). Built from a Pelican case - nearly indestructible and waterproof (IP67). Multi-pair up to 6 units. Doubles as power bank and waterproof container.
Cons: Bass is not as deep as better speakers. Very overpriced.
Full Demerbox DB2 review and specifications →
| Amplifier Power | 22W RMS |
|---|---|
| App | No |
| Aux Input | Yes |
| Battery Life | 40 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 10.6" x 9.7" x 6.9" (270 x 246 x 175 mm) |
| Drivers | 2x 3" (76mm) aluminum cone full-range drivers |
| EQ | No |
| FM Tuner | No |
| IP Rating | IP67 |
| Omnidirectional | No |
| Party Mode | No |
| Power Bank | Yes (USB-A + USB-C) |
| Power Input | AC Power brick |
| Stereo | Yes |
| TWS | Yes |
| USB Playback | No |
| Weight | 5.4 lbs (2.47 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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