Short answer: the Turtlebox Gen 3 if sound quality matters most, the Zealot S78 if price matters most, though neither ranks well in its class. The Turtlebox Gen 3 ranks #104 of 112 boombox speakers, rated 2.1/5, at $430. The Zealot S78 ranks #110, rated 2.0/5, at $91.38, $338.62 cheaper. Both are rated below 3.0/5 among the 112 boombox speakers, and the Tribit Stormbox Blast, ranked #2 at $179.99, is a better place to start if sound quality matters.
The case for the Turtlebox Gen 3: A loud, waterproof and crushproof outdoor speaker with a big battery, device charging and party mode linking. It links with other speakers (Turtlebox Party Mode), which the Zealot S78 cannot. The tradeoff: Sounds basically identical to the original and the Turtlebox Gen 2: each generation mainly added features, not sound quality.
The Zealot S78 is the longer-running choice. A loud, rugged party speaker with full waterproofing, a power bank and wireless pairing for outdoor parties. It is rated for 40 hours of battery against 25 for the Turtlebox Gen 3. It has an adjustable EQ, which the Turtlebox Gen 3 lacks. The catch: At high volume, reviews report distortion and fluctuating level, so its headline power is more useful below its maximum setting.
Buy the Turtlebox Gen 3 if sound quality is the priority over the price, or the Zealot S78 if the price is the priority over sound quality.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
A loud, waterproof and crushproof outdoor speaker with a big battery, device charging and party mode linking.
A loud, rugged party speaker with full waterproofing, a power bank and wireless pairing for outdoor parties.
Prices on this page were last checked October 31, 2026 at 7:11 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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Specifications Side By Side
| Turtlebox Gen 3 | Zealot S78 | |
|---|---|---|
| Price | $430.00 | $91.38 |
| Ranked | #104 of 112 in Boombox Size Portable Bluetooth Speakers | #110 of 112 in Boombox Size Portable Bluetooth Speakers |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | ~65Hz | - |
| Battery Life | 25 hours (Manufacturer specified) | 40 hours (Manufacturer specified) |
| IP Rating | IP67 | IP67 |
| MicroSD Playback | Yes | Yes |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| Weight | 10 lbs (4.54 kg) | 9.7 lbs (4.4 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| App | No | No |
| EQ | No | Yes (multiple modes) |
| TWS | Yes | Yes |
| Party Mode | Yes (Turtlebox Party Mode) | No |
| Power Bank | Yes (USB-C) | Yes (USB-A) |
| USB Playback | No | Yes |
| Built-in Microphone | No | No |
| Power Input | DC Barrel Connector (15V/3A) | USB-C |
| Bluetooth Version | 5.4 | 5.3 |
| Amplifier Power | 50W | 120W RMS / 150W peak |
| Dimensions | 12” x 7” x 8.7” (305 x 178 x 222 mm) | 16.1” x 6.6” x 7.3” (410 x 167 x 185 mm) |
| Drivers | 1x 6x9” (152x228mm) woofer + 1x 1” (25mm) tweeter | 2x ~120mm (4.72”) woofers + 2x ~42mm tweeters + 2x passive radiators |
| Digital Aux Input | No | No |
| Strap | No | Yes (detachable shoulder strap) |
| Microphone Input | Yes (3.5mm) | - |
| Battery Capacity | 85Wh | - |
| Maximum SPL | 102dB (measured by Williston Audio Labs) | - |
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