These sit in different size classes, so this is not a straight ranking comparison. The JBL Xtreme 4 ranks #43 of 120 large speakers by sound quality at $309.95; the Marshall Emberton III ranks #126 of 179 medium speakers by sound quality at $179.99.
Why pick the JBL Xtreme 4: A rugged, waterproof speaker with clear, punchy sound, a swappable battery, a power bank and excellent real world battery life. The tradeoff: It cannot produce the deep rumble of a larger speaker, and bass compression increases near maximum volume.
The Marshall Emberton III is the longer-running, lighter pick. A tough waterproof speaker with Marshall styling and a very long battery, plus quick charging. It is rated for 32 hours of battery against 24 for the JBL Xtreme 4. At 1.5 lbs (673 g) it weighs much less than the JBL Xtreme 4 at 4.6 lbs (2.1 kg). The tradeoff: Strange unnatural echo-like sound coloration, bass not as deep as competitors.
Buy the JBL Xtreme 4 at $309.95 for a large speaker, or the Marshall Emberton III at $179.99 for a medium speaker instead.
Want more options? Browse the full Portable Bluetooth rankings.
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Specifications Side By Side
| JBL Xtreme 4 | Marshall Emberton III | |
|---|---|---|
| Price | $309.95 | $179.99 |
| Ranked | #43 of 120 in Large Size Portable Bluetooth Speakers | #126 of 179 in Medium Size Portable Bluetooth Speakers |
| App | Yes | Yes |
| Aux Input | No | No |
| Battery Life | 24 hours (Manufacturer specified) | 32 hours (Manufacturer specified) |
| EQ | Yes (5 band) | Yes (3 presets via app) |
| IP Rating | IP67 | IP67 |
| Bluetooth Latency | 220ms | - |
| Maximum SPL | 106dB (measured by Alan Ross Reviews) | - |
| Party Mode | Yes (Auracast) | Yes (Marshall Stack) |
| Power Bank | Yes (USB-C) | No |
| Power Input | USB-C | USB-C |
| Removable Battery | Yes | - |
| TWS | Yes | No |
| Weight | 4.6 lbs (2.1 kg) | 1.5 lbs (673 g) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| Built-in Microphone | Yes | Yes |
| Stereo | Yes | Yes |
| Omnidirectional | No | Yes |
| Bluetooth Version | 5.3 | 5.3 |
| Dimensions | 11.7” x 5.9” x 5.6” (297 x 149 x 141 mm) | 6.3” x 2.7” x 3” (160 x 68 x 76 mm) |
| Drivers | 2x 70mm woofers, 2x 19mm tweeters + 2x passive radiators | 2x 2” full-range cone drivers + 2x 2” passive radiators |
| Frequency Response | 44Hz - 20kHz (Manufacturer specified) | - |
| Amplifier Power | 100W | 20W |
| Digital Aux Input | No | No |
| Strap | Yes (detachable shoulder strap) | No |
| Bass Extension (-10dB) | - | 62Hz |
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