Short answer: the Onn Medium Party Speaker Gen 2. It ranks #65 of 112 boombox speakers by sound quality, rated 3.1/5, at $90; the Zealot S78 ranks #110, rated 2.0/5, and costs $91.38, which makes this an easy call rather than a real tradeoff.
The Onn Medium Party Speaker Gen 2 is the better-sounding choice. An affordable waterproof party speaker with a big woofer, lights, a karaoke mic input and FM radio. It links with other speakers (Party Sync Mode), which the Zealot S78 cannot. The catch: Lacking detail compared to the Onn Large Party gen 2 and not as deep of bass.
The Zealot S78 is the longer-running 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 20 for the Onn Medium Party Speaker Gen 2. It has an adjustable EQ, which the Onn Medium Party Speaker Gen 2 lacks. It plays in stereo from a single unit, unlike the Onn Medium Party Speaker Gen 2. The catch: At high volume, reviews report distortion and fluctuating level, so its headline power is more useful below its maximum setting.
Buy the Onn Medium Party Speaker Gen 2. It is rated higher for sound quality than the Zealot S78 and costs less, which makes it the one to get unless you need something the other one does better.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
An affordable waterproof party speaker with a big woofer, lights, a karaoke mic input and FM radio.
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
| Onn Medium Party Speaker Gen 2 | Zealot S78 | |
|---|---|---|
| Price | $90 | $91.38 |
| Ranked | #65 of 112 in Boombox Size Portable Bluetooth Speakers | #110 of 112 in Boombox Size Portable Bluetooth Speakers |
| Aux Input | Yes | Yes |
| Battery Life | 20 hours (Manufacturer specified) | 40 hours (Manufacturer specified) |
| FM Tuner | Yes (16 presets) | - |
| IP Rating | IPX7 | IP67 |
| Microphone Input | Yes (Karaoke mode with echo effect) | - |
| Party Mode | Yes (Party Sync Mode) | No |
| Power Bank | Yes (USB-A, 5V/2.1A) | Yes (USB-A) |
| Power Input | AC Power cord | USB-C |
| Stereo | No | Yes |
| Omnidirectional | No | No |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| App | No | No |
| EQ | No | Yes (multiple modes) |
| TWS | Yes | Yes |
| USB Playback | No | Yes |
| Built-in Microphone | No | No |
| Amplifier Power | 50W RMS / 200W peak | 120W RMS / 150W peak |
| Dimensions | 9.6” x 10.9” x 15.1” (244.1 x 277.9 x 383 mm) | 16.1” x 6.6” x 7.3” (410 x 167 x 185 mm) |
| Weight | 11 lbs (5 kg) | 9.7 lbs (4.4 kg) |
| Drivers | 8” (203mm) woofer + tweeters | 2x ~120mm (4.72”) woofers + 2x ~42mm tweeters + 2x passive radiators |
| Digital Aux Input | No | No |
| Lights | Yes | - |
| Bluetooth Version | - | 5.3 |
| MicroSD Playback | - | Yes |
| Strap | - | Yes (detachable shoulder strap) |
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