Short answer: the JBL Boombox 3 for better sound quality, the Onn Medium Party Speaker Gen 2 for the lower price. The JBL Boombox 3 ranks #27 of 112 boombox speakers, rated 3.8/5, at $349.95. The Onn Medium Party Speaker Gen 2 ranks #65, rated 3.1/5, at $90, $259.95 cheaper.
The JBL Boombox 3 is the better-sounding pick. A loud, fully waterproof boombox with a dedicated subwoofer, a 24 hour battery and power bank charging. It plays in stereo from a single unit, unlike the Onn Medium Party Speaker Gen 2. Watch for: Dips in mid bass range which makes the bass sound undefined, bass boosted, peaky at 700Hz, not quite as good mids and treble as the Blast.
The Onn Medium Party Speaker Gen 2 is the lighter pick. An affordable waterproof party speaker with a big woofer, lights, a karaoke mic input and FM radio. At 11 lbs (5 kg) it weighs noticeably less than the JBL Boombox 3 at 14.8 lbs (6.7 kg). It has a microphone input for karaoke or announcements, which the JBL Boombox 3 lacks. Watch for: Lacking detail compared to the Onn Large Party gen 2 and not as deep of bass.
Buy the JBL Boombox 3 if sound quality is the priority over the price, or the Onn Medium Party Speaker Gen 2 if the price is the priority over sound quality.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
A loud, fully waterproof boombox with a dedicated subwoofer, a 24 hour battery and power bank charging.
An affordable waterproof party speaker with a big woofer, lights, a karaoke mic input and FM radio.
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
| JBL Boombox 3 | Onn Medium Party Speaker Gen 2 | |
|---|---|---|
| Price | $349.95 | $90 |
| Ranked | #27 of 112 in Boombox Size Portable Bluetooth Speakers | #65 of 112 in Boombox Size Portable Bluetooth Speakers |
| Aux Input | Yes | Yes |
| Aux Latency | 25ms | - |
| Bass Extension (-10dB) | 43Hz | - |
| Battery Life | 24 hours (Manufacturer specified) | 20 hours (Manufacturer specified) |
| IP Rating | IP67 | IPX7 |
| Bluetooth Latency | 100ms | - |
| Maximum SPL | 110dB (measured by Alan Ross Reviews) | - |
| Party Mode | Yes (PartyBoost up to 100 speakers) | Yes (Party Sync Mode) |
| Power Input | AC Power cable | AC Power cord |
| Stereo | Yes | No |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 14.8 lbs (6.7 kg) | 11 lbs (5 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| App | No | No |
| EQ | No | No |
| Power Bank | Yes (USB-A) | Yes (USB-A, 5V/2.1A) |
| USB Playback | No | No |
| Built-in Microphone | No | No |
| FM Tuner | No | Yes (16 presets) |
| Microphone Input | No | Yes (Karaoke mode with echo effect) |
| MicroSD Playback | No | - |
| Amplifier Power | 180W AC / 136W battery | 50W RMS / 200W peak |
| Dimensions | 19” x 10.1” x 7.9” (482 x 257 x 200 mm) | 9.6” x 10.9” x 15.1” (244.1 x 277.9 x 383 mm) |
| Drivers | 1x 189mm subwoofer + 2x 81mm woofers + 2x 20mm tweeters | 8” (203mm) woofer + tweeters |
| Digital Aux Input | No | No |
| Bluetooth Version | 5.3 | - |
| Strap | No | - |
| Lights | - | Yes |
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