Short answer: the Turtlebox Grande if sound quality matters most, the Zealot S78 if price matters most, though neither ranks well in its class. The Turtlebox Grande ranks #80 of 112 boombox speakers, rated 2.6/5, at $730. The Zealot S78 ranks #110, rated 2.0/5, at $91.38, $638.62 cheaper. Both are rated below 3.0/5 among the 112 boombox speakers, so if sound quality matters, consider the Tribit Stormbox Blast instead, ranked #2 at $179.99.
The Turtlebox Grande is the better-sounding pick. A rugged, submersible, crush-proof speaker with a 10 inch woofer and a battery that lasts for days. It links with other speakers (Turtlebox Party Mode), which the Zealot S78 cannot. The tradeoff: In YouTube sound samples it sounds only okay, and bass is shallow for a 10 inch woofer, only down 10dB at about 55Hz.
The Zealot S78 is the longer-running, lighter option. 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 Grande. At 9.7 lbs (4.4 kg) it weighs much less than the Turtlebox Grande at 18.8 lbs (8.53 kg). It has an adjustable EQ, which the Turtlebox Grande lacks. The tradeoff: At high volume, reviews report distortion and fluctuating level, so its headline power is more useful below its maximum setting.
Buy the Turtlebox Grande when sound quality outweighs the price for you, and the Zealot S78 when the price outweighs sound quality instead.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
A rugged, submersible, crush-proof speaker with a 10 inch woofer and a battery that lasts for days.
A loud, rugged party speaker with full waterproofing, a power bank and wireless pairing for outdoor parties.
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Specifications Side By Side
| Turtlebox Grande | Zealot S78 | |
|---|---|---|
| Price | $730.00 | $91.38 |
| Ranked | #80 of 112 in Boombox Size Portable Bluetooth Speakers | #110 of 112 in Boombox Size Portable Bluetooth Speakers |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | ~55Hz | - |
| Battery Life | 25 hours (Manufacturer specified) | 40 hours (Manufacturer specified) |
| Built-in Microphone | Yes | No |
| IP Rating | IP67 | IP67 |
| MicroSD Playback | Yes | Yes |
| Party Mode | Yes (Turtlebox Party Mode) | No |
| Power Input | DC Barrel Connector (20V/3A) | USB-C |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 18.8 lbs (8.53 kg) | 9.7 lbs (4.4 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| App | No | No |
| EQ | No | Yes (multiple modes) |
| Power Bank | Yes (USB-C) | Yes (USB-A) |
| USB Playback | No | Yes |
| Bluetooth Version | 5.4 | 5.3 |
| Amplifier Power | 86W | 120W RMS / 150W peak |
| Dimensions | 14” x 8.4” x 11.5” (355.6 x 213.4 x 292.1 mm) | 16.1” x 6.6” x 7.3” (410 x 167 x 185 mm) |
| Drivers | 1x 10” (254mm) woofer + 1x 1.25” (32mm) titanium tweeter | 2x ~120mm (4.72”) woofers + 2x ~42mm tweeters + 2x passive radiators |
| Digital Aux Input | No | No |
| Strap | No | Yes (detachable shoulder strap) |
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