Short answer: the JBL Xtreme 4 for the better speaker, the Onn Portable FM Boombox for exceptional value. The Xtreme 4 adds a removable battery, slightly deeper bass than the Xtreme 3 and a custom EQ, but is expensive with bass boost and a dip that no EQ can fix. The onn is exceptional value, with reasonably deep bass, IPX7 floating protection and FM radio, though its response is not as smooth as the top-ranked speakers and there is no custom EQ.
The case for the JBL Xtreme 4: A removable battery, slightly deeper bass than the Xtreme 3, and a custom EQ available online for the best sound quality. The catch: it’s expensive, carries some bass boost, has a dip between the upper bass and midrange that gives it a strange character no EQ can fix, and gets some upper-mids and treble boost at high volume.
Buy the Onn Portable FM Boombox. It is rated higher for sound quality than the JBL Xtreme 4 and costs less, so it is the default pick unless a specific strength of the other one matters more to you.
There is a real battery-life gap here: the JBL Xtreme 4 is rated for 24 hours, the Onn Portable FM Boombox only 16 hours.
Want more options? Browse the full Portable Bluetooth rankings.
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Specifications Side By Side
| JBL Xtreme 4 | Onn Portable FM Boombox | |
|---|---|---|
| Price | $309.95 | $74.83 |
| Ranked | #43 of 120 in Large Size Portable Bluetooth Speakers | #26 of 120 in Large Size Portable Bluetooth Speakers |
| App | Yes | No |
| Aux Input | No | Yes |
| Battery Life | 24 hours (Manufacturer specified) | 16 hours (Manufacturer specified) |
| EQ | Yes (5 band) | No |
| IP Rating | IP67 | IPX7 |
| Bluetooth Latency | 220ms | - |
| Maximum SPL | 106dB (measured by Alan Ross Reviews) | - |
| Party Mode | Yes (Auracast) | Yes (Party Sync, pairs with 1 other onn. speaker) |
| Power Bank | Yes (USB-C) | Yes (USB-A) |
| Power Input | USB-C | USB-C |
| Removable Battery | Yes | No |
| TWS | Yes | Yes |
| Weight | 4.6 lbs (2.1 kg) | 4.9 lbs (2.22 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC (inferred; additional codecs unverified) |
| Built-in Microphone | Yes | Yes |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| Bluetooth Version | 5.3 | - |
| Dimensions | 11.7” x 5.9” x 5.6” (297 x 149 x 141 mm) | 13.8” x 5.9” x 7.7” (350 x 149 x 195 mm) |
| Drivers | 2x 70mm woofers, 2x 19mm tweeters + 2x passive radiators | 2 speakers |
| Frequency Response | 44Hz - 20kHz (Manufacturer specified) | - |
| Amplifier Power | 100W | 25W RMS (100W peak) |
| Digital Aux Input | No | No |
| Strap | Yes (detachable shoulder strap) | - |
| FM Tuner | - | Yes (10 presets) |
| Lights | - | Yes |
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