These sit in different size classes, so this is not a straight ranking comparison. The JBL Xtreme 5 ranks #2 of 120 large speakers by sound quality at $399.95; the Marshall Emberton III ranks #126 of 179 medium speakers by sound quality at $179.99.

Different sizes. The Xtreme 5 is a large 6.4 lbs (2.9 kg) speaker. The Emberton III is a medium 1.5 lbs (673 g) speaker. Each is rated within its own class.
The Xtreme 5 is a fantastic sounding speaker with bass well below 40Hz, excellent off-axis dispersion, and about 110dB measured. It is IP68 with a removable battery and a claimed 28 hours. It needs the custom EQ to sound its best and has no aux input.
The Emberton III has a strange, echo-like coloration, bass only to about 62Hz, and is not very loud. It does offer a claimed 32 hours, IP67, a built-in microphone and stereo sound from one unit.
Buy the JBL Xtreme 5 at $399.95 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 5 | Marshall Emberton III | |
|---|---|---|
| Price | $399.95 | $179.99 |
| Ranked | #2 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 | 28 hours (Manufacturer specified) | 32 hours (Manufacturer specified) |
| EQ | Yes (7 band) | Yes (3 presets via app) |
| IP Rating | IP68 | IP67 |
| Maximum SPL | 110dB (measured by Alan Ross Reviews) | - |
| Party Mode | Yes (Auracast) | Yes (Marshall Stack) |
| Power Bank | Yes (USB-C, 5V/3A) | No |
| Power Input | USB-C | USB-C |
| Removable Battery | Yes | - |
| TWS | Yes | No |
| Weight | 6.4 lbs (2.9 kg) | 1.5 lbs (673 g) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC, AAC, LC3 | SBC |
| Built-in Microphone | No | Yes |
| Stereo | Partially (1 woofer) | Yes |
| Omnidirectional | No | Yes |
| Bluetooth Version | 6.0 | 5.3 |
| Dimensions | 13.6” x 6.5” x 6.1” (346 x 165 x 155 mm) | 6.3” x 2.7” x 3” (160 x 68 x 76 mm) |
| Drivers | 98x145mm woofer, 2x 20mm tweeters + 2x passive radiators | 2x 2” full-range cone drivers + 2x 2” passive radiators |
| Frequency Response | 40Hz - 20kHz (Manufacturer specified) | - |
| Amplifier Power | 1 x 90W RMS Woofer + 2 x 20W RMS Tweeter (AC power mode) 1 x 60W RMS Woofer + 2 x 15W RMS Tweeter (Battery mode) | 20W |
| Digital Aux Input | Yes (USB-C) | No |
| Strap | Yes (detachable shoulder strap) | No |
| Bass Extension (-10dB) | 43Hz (measured by Alan Ross Reviews) | 62Hz |
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