Short answer: the JBL Authentics 300. It ranks #46 of 113 boombox speakers by sound quality, rated 3.5/5, at $299.95. The Onn Pro X Large Boom Boombox ranks #49, rated 3.4/5, at $199, $100.95 cheaper, which does not close the gap in sound quality.
The JBL Authentics 300 is the lighter pick. A retro styled smart speaker with both Alexa and Google Assistant, a leather handle and battery power. At 10.8 lbs (4.9 kg) it weighs noticeably less than the Onn Pro X Large Boom Boombox at 17.2 lbs (7.8 kg). The catch: Narrow sounding, bass not as deep as others.
The Onn Pro X Large Boom Boombox is the longer-running, tougher pick. A powerful, waterproof party boombox with a 20 hour battery and light modes at a low price. It is rated for 20 hours of battery against 8 for the JBL Authentics 300. It is rated IP67, while the JBL Authentics 300 has no water resistance. It keeps a wired aux input, which the JBL Authentics 300 lacks. Watch for: Bass not as deep as higher ranked speakers like the JBL Boombox 3, JBL Boombox 4, or Tribit Stormbox Blast.
Buy the JBL Authentics 300. It is rated higher for sound quality, and saving $100.95 with the Onn Pro X Large Boom Boombox does not make up for the sound-quality gap.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Prices on this page were last checked November 11, 2026 at 3:26 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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Specifications Side By Side
| JBL Authentics 300 | Onn Pro X Large Boom Boombox | |
|---|---|---|
| Price | $299.95 | $199.00 |
| Ranked | #46 of 113 in Boombox Size Portable Bluetooth Speakers | #49 of 113 in Boombox Size Portable Bluetooth Speakers |
| App | Yes | - |
| Bass Extension (-10dB) | 45Hz | - |
| Battery Life | 8 hours (Manufacturer specified) | 20 hours (Manufacturer specified) |
| EQ | Yes (App EQ) | Yes (Bass Boost) |
| IP Rating | None | IP67 |
| Maximum SPL | 100dB (measured by Alan Ross Reviews) | - |
| Party Mode | Yes (Wi-Fi Multi-Room) | Yes (Auracast) |
| Power Input | AC Power cable | AC Power cord |
| Stereo | Partially (1 woofer) | - |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 10.8 lbs (4.9 kg) | 17.2 lbs (7.8 kg) |
| Wi-Fi | Yes | - |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC (inferred; additional codecs unverified) |
| Power Bank | No | Yes (USB-A, 5V/2A) |
| USB Playback | Yes | - |
| Built-in Microphone | Yes | - |
| MicroSD Playback | No | - |
| Aux Input | No | Yes |
| Amplifier Power | 100W | 180W RMS (540W peak) |
| Dimensions | 13.5” x 7.7” x 7.1” (342 x 195.6 x 180.3 mm) | 20.1” x 10.3” x 9” (510 x 261 x 228 mm) |
| Drivers | 1” tweeter + 4” woofer + passive radiators | 5 speakers |
| Digital Aux Input | No | No |
| Bluetooth Version | 5.3 | 5.4 (Manufacturer specified) |
| Voice Assistants | Amazon Alexa & Google Assistant (simultaneous) | - |
| Strap | No | - |
| Removable Battery | - | No |
| Frequency Response | - | 50Hz - 20kHz (Manufacturer specified) |
| Lights | - | Yes |
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